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Sim YS, Park WJ, Jung S, Kook MS, Park HJ, Oh HK, Han JJ. Three-Dimensional Analysis of Bone Remodeling After Closed Treatment for Mandibular Condylar Head Fracture. J Craniofac Surg 2024:00001665-990000000-01520. [PMID: 38710039 DOI: 10.1097/scs.0000000000010235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 03/20/2024] [Indexed: 05/08/2024] Open
Abstract
Closed treatment of mandibular condylar fractures has been used for its indications based on the fracture site, fracture status, and patient age. Posttreatment mandibular condyle size is associated with mandibular function; however, a few studies have reported bone remodeling patterns and volume changes in the condyle and glenoid fossa after mandibular condylar head fractures (CHFs). Therefore, volumetric changes in the mandibular condyle and glenoid fossa were analyzed in the present study, and bone remodeling patterns were evaluated after mandibular CHFs. The present study included 16 condyles from 12 patients who received closed treatment for CHF. After reconstruction of a 3-dimensional skull model, including the mandible, using computed tomography data taken immediately after injury and 6 months after treatment, volume changes in the mandibular condyle and glenoid fossa were analyzed. The condylar volume increased by 0.32±0.66 cm3 during the 6-month healing period without statistical significance (P=0.093). Regarding the glenoid fossa, the fossa showed a statistically significant volume increase of 0.41±0.59 cm3 (P=0.021), and 12 glenoid fossae (75%) showed downward bone apposition; however, no change or only mild bone resorption was observed in 4 glenoid fossae (25%). The results of this study indicated that the volume changes in the mandibular condyle after closed treatment of a mandibular CHF are not significant, and the glenoid fossa adapts to the displaced mandibular condyle through downward growth accompanied by volume increase.
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Affiliation(s)
- You Song Sim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju
| | - Won-Jong Park
- Department of Oral and Maxillofacial Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Republic of Korea
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Tran TT, Lee G, Huh YH, Chung KH, Lee SY, Park KH, Kwon SH, Kook MS, Chun JS, Koh JT, Ryu JH. Disruption of cholesterol homeostasis triggers periodontal inflammation and alveolar bone loss. Exp Mol Med 2023; 55:2553-2563. [PMID: 38036731 PMCID: PMC10767058 DOI: 10.1038/s12276-023-01122-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 08/21/2023] [Accepted: 09/04/2023] [Indexed: 12/02/2023] Open
Abstract
Oral diseases exhibit a significant association with metabolic syndrome, including dyslipidemia. However, direct evidence supporting this relationship is lacking, and the involvement of cholesterol metabolism in the pathogenesis of periodontitis (PD) has yet to be determined. In this study, we showed that high cholesterol caused periodontal inflammation in mice. Cholesterol homeostasis in human gingival fibroblasts was disrupted by enhanced uptake through C-X-C motif chemokine ligand 16 (CXCL16), upregulation of cholesterol hydroxylase (CH25H), and the production of 25-hydroxycholesterol (an oxysterol metabolite of CH25H). Retinoid-related orphan receptor α (RORα) mediated the transcriptional upregulation of inflammatory mediators; consequently, PD pathogenesis mechanisms, including alveolar bone loss, were stimulated. Our collective data provided direct evidence that hyperlipidemia is a risk factor for PD and supported that inhibition of the CXCL16-CH25H-RORα axis is a potential treatment mechanism for PD as a systemic disorder manifestation.
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Affiliation(s)
- Thanh-Tam Tran
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Gyuseok Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Yun Hyun Huh
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Korea
| | - Ki-Ho Chung
- Department of Preventive and Public Health Dentistry, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sun Young Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Ka Hyon Park
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Seung Hee Kwon
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jang-Soo Chun
- School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, Korea
| | - Jeong-Tae Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Je-Hwang Ryu
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Korea.
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Korea.
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Park C, Kim H, Ryu J, Jung S, Park HJ, Oh HK, Kook MS. Condylar volume and positional changes following a bilateral sagittal split ramus osteotomy in skeletal class II and III malocclusions. Maxillofac Plast Reconstr Surg 2023; 45:41. [PMID: 38008875 PMCID: PMC10678871 DOI: 10.1186/s40902-023-00408-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 11/18/2023] [Indexed: 11/28/2023] Open
Abstract
BACKGROUND Mandibular condyle remodeling and displacement are post-orthognathic surgery concerns that can potentially lead to occlusal issues after bilateral sagittal split ramus osteotomy. This retrospective study examined the relationship between condylar volume changes and position alterations after surgery in patients with skeletal class II and III malocclusions using cone-beam CT. METHODS The study included 16 patients (6 with Class II malocclusion, 10 with Class III malocclusion) who underwent bilateral sagittal split ramus osteotomy at Chonnam National University Hospital. Cone-beam CT data were collected at three specific time points: before surgery, immediately after surgery, and approximately 6 months post-surgery. Mandibular movement was measured using InVivoDental 5.4.6. ITK-SNAP 3.8.0 was used to assessed condylar volume changes post-surgery. Condyle positions were evaluated in four parts with RadiAnt DICOM Viewer 4.6.9. Statistical analyses were performed using the SPSS version 23. RESULTS Considering both Class II and III malocclusion, a 2.91% volume reduction was noted immediately and at 6 months after surgery. Both Class II and III cases demonstrated a decrease in superior joint space by -0.59 mm and medial joint space by -1.09 mm. No significant correlation was found between this process and condylar volume change. CONCLUSIONS The mandibular condyle volume decreased, and superior-medial movement of the condyle was detected in patients with Class II and III malocclusion immediately and at 6 months after surgery with no volume-position correlation.
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Affiliation(s)
- Chulyoung Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Hyejin Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Jaeyoung Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea.
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Yoon K, Jung S, Ryu J, Park HJ, Oh HK, Kook MS. Redox-Sensitive Delivery of Doxorubicin from Nanoparticles of Poly(ethylene glycol)-Chitosan Copolymer for Treatment of Drug-Resistant Oral Cancer Cells. Int J Mol Sci 2023; 24:13704. [PMID: 37762003 PMCID: PMC10531032 DOI: 10.3390/ijms241813704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/18/2023] [Accepted: 08/23/2023] [Indexed: 09/29/2023] Open
Abstract
Reactive oxygen species (ROS)-sensitive polymer nanoparticles were synthesized for tumor targeting of an anticancer drug, doxorubicin (DOX). For this purpose, chitosan-methoxy poly(ethylene glycol) (mPEG) (ChitoPEG)-graft copolymer was synthesized and then DOX was conjugated to the backbone of chitosan using a thioketal linker. Subsequently, the chemical structure of the DOX-conjugated ChitoPEG copolymer (ChitoPEGthDOX) was confirmed via 1H nuclear magnetic resonance (NMR) spectra. Nanoparticles of the ChitoPEGthDOX conjugates have spherical shapes and a size of approximately 100 nm. Transmission electron microscopy (TEM) has shown that ChitoPEGthDOX nanoparticles disintegrate in the presence of hydrogen peroxide and the particle size distribution also changes from a monomodal/narrow distribution pattern to a multi-modal/wide distribution pattern. Furthermore, DOX is released faster in the presence of hydrogen peroxide. These results indicated that ChitoPEGthDOX nanoparticles have ROS sensitivity. The anticancer activity of the nanoparticles was evaluated using AT84 oral squamous carcinoma cells. Moreover, DOX-resistant AT84 cells were prepared in vitro. DOX and its nanoparticles showed dose-dependent cytotoxicity in both DOX-sensitive and DOX-resistant AT84 cells in vitro. However, DOX itself showed reduced cytotoxicity against DOX-resistant AT84 cells, while the nanoparticles showed almost similar cytotoxicity to DOX-sensitive and DOX-resistant AT84 cells. This result may be due to the inhibition of intracellular delivery of free DOX, while nanoparticles were efficiently internalized in DOX-resistant cells. The in vivo study of a DOX-resistant AT84 cell-bearing tumor xenograft model showed that nanoparticles have higher antitumor efficacy than those found in free DOX treatment. These results may be related to the efficient accumulation of nanoparticles in the tumor tissue, i.e., the fluorescence intensity in the tumor tissue was stronger than that of any other organs. Our findings suggest that ChitoPEGthDOX nanoparticles may be a promising candidate for ROS-sensitive anticancer delivery against DOX-resistant oral cancer cells.
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Affiliation(s)
- Kaengwon Yoon
- El-Dental Clinic, Seomun Daero Street 625, Namgu, Gwangju 61737, Republic of Korea;
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; (S.J.); (J.R.); (H.-J.P.); (H.-K.O.)
| | - Seunggon Jung
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; (S.J.); (J.R.); (H.-J.P.); (H.-K.O.)
| | - Jaeyoung Ryu
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; (S.J.); (J.R.); (H.-J.P.); (H.-K.O.)
| | - Hong-Ju Park
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; (S.J.); (J.R.); (H.-J.P.); (H.-K.O.)
| | - Hee-Kyun Oh
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; (S.J.); (J.R.); (H.-J.P.); (H.-K.O.)
| | - Min-Suk Kook
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; (S.J.); (J.R.); (H.-J.P.); (H.-K.O.)
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Lee CM, Jeong YIL, Lim YK, Kook JK, Yang SW, Kook MS, Kim BH. The effect of cold atmospheric plasma (CAP) on the formation of reactive oxygen species and treatment of Porphyromonas gingivalis biofilm in vitro for application in treatment of peri-implantitis. KOREAN J CHEM ENG 2023. [DOI: 10.1007/s11814-022-1337-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Shathi FF, Ryu J, Jung S, Kook MS, Park HJ, Oh HK. Evaluation of mandibular positional changes after orthognathic surgery in skeletal class II and class III surgery-first approach patients. J Stomatol Oral Maxillofac Surg 2022; 123:677-684. [PMID: 35472486 DOI: 10.1016/j.jormas.2022.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/07/2022] [Accepted: 04/20/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study was to predict and compare postoperative changes of mandibular position between mandibular setback and advancement surgery in a surgery-first approach (SFA). MATERIALS AND METHODS The study population included patients who underwent mandibular setback or advancement surgery using bilateral sagittal split ramus osteotomy, those were divided into two groups: mandibular setback and advancement surgery. Surgical and postoperative mandibular positional changes were evaluated by lateral cephalograms and CTs taken within 2 months before surgery (T0), 1 week after surgery (T1), and after the debonding procedure (T2). The postoperative mandibular positional changes were predicted from the increase in vertical dimension (VD) in surgical occlusion and the counterclockwise rotation to the preoperative VD on the lateral cephalograms and CT at T1. Furthermore, resultant measurement on postoperative mandibular positional changes was performed. Finally, we compared the prediction with actual positional changes of the mandible after the debonding procedure. RESULTS Nine SFA patients with mandibular setback surgery and six with advancement surgery were evaluated and significant mandibular changes from T0 to T1 and from T1 to T2 were observed. Negative correlation between horizontal surgical changes and postoperative horizontal changes was present in both groups. The difference between the predicted and actual amount of postoperative mandibular movement was significant in the mandibular advancement surgery group. CONCLUSION Postoperative mandibular relapse appeared much larger in the mandibular advancement surgery group than in the setback group. Therefore, it is more important to consider the postoperative mandibular position change in mandibular advancement surgery in SFA.
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Affiliation(s)
- Fatema Farhana Shathi
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea
| | - Jaeyoung Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea; Chonnam National University Dental Hospital, Gwangju, Republic of Korea.
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea; Chonnam National University Dental Hospital, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea; Chonnam National University Dental Hospital, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea; Chonnam National University Dental Hospital, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea, 77, Yongbong-ro, Buk-gu, Gwangju 61186, Republic of Korea; Chonnam National University Dental Hospital, Gwangju, Republic of Korea
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Lee J, Jung HY, Ryu J, Jung S, Kook MS, Park HJ, Oh HK. Open versus closed treatment for extracapsular fracture of the mandibular condyle. J Korean Assoc Oral Maxillofac Surg 2022; 48:303-308. [PMID: 36316189 PMCID: PMC9639254 DOI: 10.5125/jkaoms.2022.48.5.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/11/2022] [Accepted: 08/22/2022] [Indexed: 11/07/2022] Open
Abstract
Objectives Selection of treatment methods for mandibular condylar fractures remains controversial. In this study, we investigated treatment methods for condylar fractures to determine the indications for open or closed reduction. Patients and Methods Patients >12 years of age treated for mandibular condylar fractures with a follow-up period of ≥3 months were included in this study. The medical records of enrolled patients were reviewed for sex, age, fracture site, treatment method (open or closed reconstruction), postoperative intermaxillary fixation period, operation time, and complications. Radiological analysis of fracture fragment displacement and changes in ramal height difference was performed using computed tomography and panoramic radiography. Results A total of 198 patients was investigated, 48.0% (n=95) of whom underwent closed reduction and 52.0% (n=103) underwent open reduction. There was no significant correlation between reduction method and patient sex, age, or follow-up period. No statistically significant difference between the incidence of complications and treatment method was observed. None of the patients underwent open reduction of condylar head fracture. Binary logistic regression analysis showed that open reduction was significantly more frequent in patients with subcondylar fracture compared to in those with a fracture in the condylar head area. There was no statistically significant correlation between the groups and fracture fragment displacement. However, there was a significant difference between the treatment groups in amount of change in ramal height difference between the fractured and the non-fractured sides during treatment. Conclusion No significant clinical differences were found between the open and closed reduction methods in patients with mandibular condylar fractures. According to fracture site, closed reduction was preferred for condyle head fractures. There was no significant relationship between fracture fragment displacement and treatment method.
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Affiliation(s)
- Junyeong Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Hee-Yeoung Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Jaeyoung Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry and Dental Science Research Institute, Chonnam National University, Gwangju, Korea
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Kim MJ, Jeong JY, Ryu J, Jung S, Park HJ, Oh HK, Kook MS. Accuracy of digital surgical guides for dental implants. Maxillofac Plast Reconstr Surg 2022; 44:35. [PMID: 36282400 PMCID: PMC9596667 DOI: 10.1186/s40902-022-00364-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 10/11/2022] [Indexed: 11/10/2022] Open
Abstract
Background Recently developed imaging techniques, such as cone beam computed tomography (CBCT) and CAD/CAM technology, have facilitated reliable implant planning and implant surgical guide production by 3D printing. This study compared the accuracy of implant-guided surgery using the R2GATE® program with CBCT before and after surgery. Patients and methods The study included patients who visited the Department of Oral and Maxillofacial Surgery at Chonnam National University Hospital from September 2021 to March 2022. Twenty-four implants were placed in eleven patients. Using R2GATE® Windows (Megagen implant, Daegu, Korea) software, implant placement was planned. The difference was measured by the CBCT before and after surgery. The cervical and apical distance and angular deviation of the implants were measured. Statistical analysis was performed using an independent t-test, Pearson correlation, and multiple regression analyses. Results The three-dimensional linear distance difference between the planned implant and the placed implant was 0.97 ± 0.37 mm at the cervical and 1.13 ± 0.36 mm at the apical. The difference in angle deviation between the planned implant and the placed implant was 3.42 ± 2.12°. Among the variables affecting the accuracy of implant placement, a statistically significant difference was found when using a tissue-supported implant guide, implant diameter and implant length. Conclusion Based on these results, using the R2GATE® program is useful to use an implant digital surgical guide, and it will be used in various clinic.
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Affiliation(s)
- Myoung-Ju Kim
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
| | - Jun Young Jeong
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
| | - Jaeyoung Ryu
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
| | - Seunggon Jung
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
| | - Hong-Ju Park
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
| | - Hee-Kyun Oh
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
| | - Min-Suk Kook
- grid.14005.300000 0001 0356 9399Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 33 Yongbong-ro, Buk-Gu, Gwangju, Republic of Korea 61186
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Hong SO, Kook MS, Jeong YIL, Park MJ, Yang SW, Kim BH. Nanophotosensitizers Composed of Phenyl Boronic Acid Pinacol Ester-Conjugated Chitosan Oligosaccharide via Thioketal Linker for Reactive Oxygen Species-Sensitive Delivery of Chlorin e6 against Oral Cancer Cells. Materials (Basel) 2022; 15:7057. [PMID: 36295132 PMCID: PMC9604738 DOI: 10.3390/ma15207057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/23/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Chlorin E6 (Ce6)-incorporated nanophotosensitizers were fabricated for application in photodynamic therapy (PDT) of oral cancer cells. For this purpose, chitosan oligosaccharide (COS) was conjugated with hydrophobic and reactive oxygen species (ROS)-sensitive moieties, such as phenyl boronic acid pinacol ester (PBAP) via a thioketal linker (COSthPBAP). ThdCOOH was conjugated with PBAP to produce ThdCOOH-PBAP conjugates and then attached to amine groups of COS to produce a COSthPBAP copolymer. Ce6-incorporated nanophotosensitizers using the COSthPBAP copolymer were fabricated through the nanoprecipitation and dialysis methods. The Ce6-incorporated COSthPBAP nanophotosensitizers had a small diameter of less than 200 nm with a mono-modal distribution pattern. However, it became a multimodal and/or irregular distribution pattern when H2O2 was added. In a morphological observation using TEM, the nanophotosensitizers were disintegrated by the addition of H2O2, indicating that the COSthPBAP nanophotosensitizers had ROS sensitivity. In addition, the Ce6 release rate from the COSthPBAP nanophotosensitizers accelerated in the presence of H2O2. The SO generation was also higher in the nanophotosensitizers than in the free Ce6. Furthermore, the COSthPBAP nanophotosensitizers showed a higher intracellular Ce6 uptake ratio and ROS generation in all types of oral cancer cells. They efficiently inhibited the viability of oral cancer cells under light irradiation, but they did not significantly affect the viability of either normal cells or cancer cells in the absence of light irradiation. The COSthPBAP nanophotosensitizers showed a tumor-specific delivery capacity and fluorescence imaging of KB tumors in an in vivo animal tumor imaging study. We suggest that COSthPBAP nanophotosensitizers are promising candidates for the imaging and treatment of oral cancers.
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Affiliation(s)
- Sung-Ok Hong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul 02447, Korea
- Department of Oral and Maxillofacial Surgery, Kyung Hee University Dental Hospital at Gangdong, Seoul 05278, Korea
| | - Min-Suk Kook
- Department of Maxillofacial Oral Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Young-IL Jeong
- Department of Dental Materials, College of Dentistry, Chosun University, Gwangju 61452, Korea
| | - Min-Ju Park
- Department of Dental Materials, College of Dentistry, Chosun University, Gwangju 61452, Korea
| | - Seong-Won Yang
- Department of Ophthalmology, College of Medicine, Chosun University, Gwangju 61453, Korea
| | - Byung-Hoon Kim
- Department of Dental Materials, College of Dentistry, Chosun University, Gwangju 61452, Korea
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Oh MH, Park AH, Yun KD, Kook MS, Cho JH. Long-term follow-up implant site development in the submerged mandibular primary second molars: A case report. Angle Orthod 2022; 92:805-814. [PMID: 35969201 DOI: 10.2319/080621-617.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 06/01/2022] [Indexed: 11/23/2022] Open
Abstract
Treatment of ankylosed and submerged primary molars without permanent successors is challenging, as normal vertical dentoalveolar growth is compromised. Thus, grafting techniques and distraction osteogenesis are performed for ridge augmentation before implant restoration. However, these techniques are invasive with limited success. Another treatment for implant site development is noninvasive forced eruption. This case report describes long-term follow-up of alveolar ridge augmentation in the submerged mandibular primary second molars using subluxation and orthodontic forced eruption for implant site development. A 19-year old female had Class II molar relationships, upper anterior crowding with large overjet, missing four second premolars and submerged mandibular primary second molars with inadequate vertical development of alveolar bone. For the vertical alveolar bone alterations in the mandible, forced eruption with subluxation of ankylosed lower primary second molars was applied. Treatment outcome was evaluated over 5 years with stable occlusion, healthy periodontal tissues, and successful radiographic results.
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11
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Jaeyoung R, Kang HS, Kang BH, Jung S, Kook MS, Hee-Kyun OH, Jung JY, Park HJ. Effect of rhBMP-2 applied with a 3D-printed titanium implant on new bone formation in rabbit calvarium. J Appl Oral Sci 2021; 29:e20201092. [PMID: 34524369 PMCID: PMC8428818 DOI: 10.1590/1678-7757-2020-1092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 05/26/2021] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE This study sought to compare the biocompatibility of a three-dimensional (3D)-printed titanium implant with a conventional machined titanium product, as well as the effect of such implant applied with recombinant human Bone Morphogenetic Protein Type 2 (rhBMP-2) for guided bone regeneration. METHODOLOGY Disk-shaped titanium specimens fabricated either by the conventional machining technique or by the 3D-printing technique were compared by MC3T3-E1 cells cytotoxicity assay. New bone formation was evaluated using a rapid prototype titanium cap applied to the calvaria of 10 rabbits, which were divided into two groups: one including an atelopeptide collagen plug on one side of the cap (group I) and the other including a plug with rhBMP-2 on the other side (group II). At six and 12 weeks after euthanasia, rabbits calvaria underwent morphometric analysis through radiological and histological examination. RESULTS Through the cytotoxicity assay, we identified a significantly higher number of MC3T3-E1 cells in the 3D-printed specimen when compared to the machined specimen after 48 hours of culture. Moreover, morphometric analysis indicated significantly greater bone formation at week 12 on the side where rhBMP-2 was applied when evaluating the upper portion immediately below the cap. CONCLUSION The results suggest that 3D-printed titanium implant applied with rhBMP-2 enables new bone formation.
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Affiliation(s)
- Ryu Jaeyoung
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
| | - Hyo-Sun Kang
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
| | - Byung-Hun Kang
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
| | - Seunggon Jung
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
| | - O H Hee-Kyun
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
| | - Ji-Yeon Jung
- Chonnam National University, Department of Oral Physiology, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Chonnam National University, Department of Oral and Maxillofacial Surgery, Gwangju, Republic of Korea
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12
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Song J, Kook MS, Kim BH, Jeong YIL, Oh KJ. Ciprofloxacin-Releasing ROS-Sensitive Nanoparticles Composed of Poly(Ethylene Glycol)/Poly(D,L-lactide-co-glycolide) for Antibacterial Treatment. Materials (Basel) 2021; 14:ma14154125. [PMID: 34361319 PMCID: PMC8348395 DOI: 10.3390/ma14154125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/11/2022]
Abstract
Since urinary tract infections (UTIs) are closely associated with oxidative stress, we developed ROS-sensitive nanoparticles for ciprofloxacin (CIP) delivery for inhibition of UTI. Poly(D,L-lactide-co-glycolide) (PLGA)- selenocystamine (PLGA-selenocystamine) conjugates were attached to methoxypoly(ethylene glycol) (PEG) tetraacid (TA) (TA-PEG) conjugates to produce a copolymer (abbreviated as LGseseTAPEG). Selenocystamine linkages were introduced between PLGA and TA to endow reactive oxygen species (ROS) sensitivity to nanoparticles. CIP-incorporated nanoparticles of LGseseTAPEG copolymer were fabricated by W/O/W/W emulsion method. CIP-incorporated nanoparticles responded to H2O2 and then their morphologies were disintegrated by incubation with H2O2. Furthermore, particle size distribution of nanoparticles was changed from mono-modal distribution pattern to multi-modal distribution pattern by addition of H2O2. CIP release from nanoparticles of LGseseTAPEG copolymer was faster in the presence of H2O2 than in the absence of it. In antibacterial study using Escherichia coli (E. coli), free CIP and free CIP plus empty nanoparticles showed dose-dependent inhibitory effect against growth of bacteria while CIP-incorporated nanoparticles have less antibacterial activity compared to free CIP. These results were due to that CIP-incorporated nanoparticles have sustained release properties. When free CIP or CIP-incorporated nanoparticles were introduced into dialysis membrane to mimic in vivo situation, CIP-incorporated nanoparticles showed superior antibacterial activity compared to free CIP. At cell viability assay, nanoparticles of LGseseTAPEG copolymer have no acute cytotoxicity against L929 mouse fibroblast cells and CCD986sk human skin fibroblast cells. We suggest LGseseTAPEG nanoparticles are a promising candidate for CIP delivery.
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Affiliation(s)
- Jaeik Song
- Department of Urology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju 61469, Korea;
| | - Min-Suk Kook
- Department of Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
| | - Byung-Hoon Kim
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea; (B.-H.K.); (Y.-I.J.)
| | - Young-IL Jeong
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea; (B.-H.K.); (Y.-I.J.)
| | - Kyung-Jin Oh
- Department of Urology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju 61469, Korea;
- Correspondence: ; Tel.: +82-62-220-6704
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13
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Lee CM, Jeong YIL, Kook MS, Kim BH. Combinatorial Effect of Cold Atmosphere Plasma (CAP) and the Anticancer Drug Cisplatin on Oral Squamous Cell Cancer Therapy. Int J Mol Sci 2020; 21:ijms21207646. [PMID: 33076565 PMCID: PMC7588898 DOI: 10.3390/ijms21207646] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/12/2020] [Accepted: 10/13/2020] [Indexed: 12/11/2022] Open
Abstract
Cold atmospheric plasma (CAP) has been extensively investigated in the local treatment of cancer due to its potential of reactive oxygen species (ROS) generation in biological systems. In this study, we examined the synergistic effect of combination of CAP and cisplatin-mediated chemotherapy of oral squamous cell carcinoma (OSCC) in vitro. SCC-15 OSCC cells and human gingival fibroblasts (HGF-1) cells were treated with cisplatin, and then, the cells were irradiated with CAP. Following this, viability and apoptosis behavior of the cells were investigated. The viability of SCC-15 cells was inhibited by cisplatin with a dose-dependent manner and CAP treatment time. HGF-1 cells also showed decreased viability by treatment with cisplatin and CAP. Combination of 1 μM cisplatin plus 3 min of CAP treatment or 3 μM cisplatin plus 1 min of CAP treatment showed a synergistic anticancer effect with appropriate cytotoxicity against normal cells. ROS generation and dead cell staining were also increased by the increase in CAP treatment time. Furthermore, tumor-suppressor proteins and apoptosis-related enzymes also increased according to the treatment time of CAP. We showed the synergistic effect of cisplatin and CAP treatment against SCC-15 cells with low cytotoxicity against normal cells.
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Affiliation(s)
- Chang-Min Lee
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea; (C.-M.L.); (Y.-I.J.)
| | - Young-IL Jeong
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea; (C.-M.L.); (Y.-I.J.)
| | - Min-Suk Kook
- Department of Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Correspondence: (M.-S.K.); (B.-H.K.); Tel.: +82-62-230-6447 (B.-H.K.)
| | - Byung-Hoon Kim
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea; (C.-M.L.); (Y.-I.J.)
- Correspondence: (M.-S.K.); (B.-H.K.); Tel.: +82-62-230-6447 (B.-H.K.)
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14
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Zhai Y, Han JJ, Jung S, Kook MS, Park HJ, Oh HK. Changes in the temporomandibular joint clicking and pain disorders after orthognathic surgery: Comparison of orthodontics-first approach and surgery-first approach. PLoS One 2020; 15:e0238494. [PMID: 32886686 PMCID: PMC7473545 DOI: 10.1371/journal.pone.0238494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/18/2020] [Indexed: 11/19/2022] Open
Abstract
The purposes of this study were to investigate the influence of the orthodontics-first approach (OFA) and surgery-first approach (SFA) on changes in the signs and symptoms of temporomandibular joint disorders (TMDs) and to compare pre- and postoperative orthodontic treatment duration and total treatment duration between the two approaches. This retrospective study recruited 182 adult patients with malocclusions treated with OFA and SFA and recorded variables such as age, gender, skeletal classification, and signs and symptoms of TMD (clicking and pain disorders) before the start of the surgical-orthodontic treatment and after surgery. Changes in the signs and symptoms of TMD and treatment duration were evaluated within each approach and compared between two approaches. A binary logistic regression was performed to assess the influence of the variables on the postoperative signs and symptoms of TMD. There were no significant postoperative changes in temporomandibular joint (TMJ) pain for OFA and SFA, whereas a significant reduction was found in TMJ clicking after surgery for both approaches. According to binary logistic regression, the type of surgical-orthodontic treatment (OFA or SFA) was not a significant risk factor for postoperative TMJ clicking and pain, and the risk of postoperative TMJ clicking and pain was significant only when TMJ clicking (OR = 10.774, p < 0.001) and pain (OR = 26.876, p = 0.008) existed before the start of the entire treatment, respectively. With regard to the treatment duration, SFA (21.1 ± 10.3 months) exhibited significantly shorter total treatment duration than OFA (34.4 ± 11.9 months) (p < 0.001). The results of this study suggest that surgical-orthodontic treatment using SFA can be a feasible option of treatment for dentofacial deformities based on the equivalent effect on TMD and shorter overall treatment period compared to conventional surgical-orthodontic treatment using OFA.
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Affiliation(s)
- Ying Zhai
- Graduate Dental School, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
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15
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Yang DH, Heo GM, Park HJ, Oh HK, Kook MS. Comparative Effectiveness of Surface Functionalized Poly- ε-Caprolactone Scaffold and β-TCP Mixed PCL Scaffold for Bone Regeneration. J Nanosci Nanotechnol 2020; 20:5349-5355. [PMID: 32331102 DOI: 10.1166/jnn.2020.17672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Physio-chemical surface properties to biomaterial has been attention in tissue engineering due to their properties on cell adhesion, proliferation, and differentiation. The object of this study is to evaluate the preosteoblast biological response on physio-chemical surface-layered 3D PCL scaffold and 3D PCL/β-TCP scaffold. 3D scaffolds were fabricated by FDM 3D printing. Physio-chemical surface of 3D scaffolds were prepared by oxygen plasma and amine plasma-polymerization, respectively. The results of this study demonstrated that amine plasma-treated 3D scaffold on adhesion, proliferation, and osteogenic differentiation of the MC3T3-E1 was significantly increased compared to the other scaffolds.
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Affiliation(s)
- Dong-Hwan Yang
- Suwan The Dental Hospital, 6, Suwan-ro, Gwangsan-gu, Gwangju, 62305, South Korea
| | - Gwang-Min Heo
- School of Biomedical Engineering, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 61186, South Korea
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16
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Choi SJ, Sim YS, Han JJ, Kook MS, Park HJ, Oh HK. Evaluation of Bone Remodeling After Simultaneous Sagittal Split Ramus Osteotomy and Mandibular Angle Ostectomy in Patients With Mandibular Prognathism. J Oral Maxillofac Surg 2020; 78:2071.e1-2071.e11. [PMID: 32649898 DOI: 10.1016/j.joms.2020.05.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 05/10/2020] [Accepted: 05/26/2020] [Indexed: 11/17/2022]
Abstract
PURPOSE The present study assessed the postoperative bone remodeling after simultaneous sagittal split ramus osteotomy (SSRO) and mandibular angle ostectomy using a 3-dimensional analysis of computed tomography (CT) data. MATERIALS AND METHODS We designed and implemented a retrospective study that included patients who had undergone SSRO with (study group) or without (control group) mandibular angle ostectomy. Using CT data taken immediately after (T1) and 6 months (T2) after surgery, the vertical and horizontal morphologic changes of the mandibular angle were evaluated and compared between the 2 groups. In the study group, the volumetric changes of the mandibular angle were assessed, and the bone regeneration rate was calculated. RESULTS A total of 58 mandibular angles were evaluated (32 in the study group and 26 in the control group). The study group exhibited significantly greater vertical bone regrowth at the middle and posterior regions of the mandibular angle ostectomy line compared with that in the control group (middle, P < .001; posterior, P < .001). Both groups showed significant horizontal bone regrowth at 6 months postoperatively (P < .01). In the study group, the postoperative vertical bone regrowth was significantly associated with the extent of exposed bone below the angle ostectomy line at T1 for all regions (P < .001). The percentage of postoperative regenerated bone volume relative to the volume of bone removed intraoperatively was 41.8%. CONCLUSIONS The present findings suggest that significant bone regrowth could occur after mandibular angle ostectomy with simultaneous SSRO. Therefore, it is necessary to consider bone remodeling patterns in the treatment planning stage for better and more predictable surgical outcomes.
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Affiliation(s)
- Song Jay Choi
- Graduate Student, Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - You-Song Sim
- Graduate Student, Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong Joon Han
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Dental Science Research Institute; and Researcher, Hard-Tissue Biointerface Research Center., School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.
| | - Min-Suk Kook
- Professor, Department of Oral and Maxillofacial Surgery, Dental Science Research Institute., School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Professor, Department of Oral and Maxillofacial Surgery, Dental Science Research Institute., School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Professor, Department of Oral and Maxillofacial Surgery., School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
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17
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Kook MS, Lee CM, Jeong YI, Kim BH. Nanophotosensitizers for Folate Receptor-Targeted and Redox-Sensitive Delivery of Chlorin E6 against Cancer Cells. Materials (Basel) 2020; 13:ma13122810. [PMID: 32580439 PMCID: PMC7344700 DOI: 10.3390/ma13122810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/10/2020] [Accepted: 06/19/2020] [Indexed: 01/18/2023]
Abstract
In this study, FA-PEG3500-ss-Ce6tri copolymer was synthesized to deliver photosensitizers via redox-sensitive and folate receptor-specific manner. Folic acid (FA) was attached to amine end of poly (ethylene glycol) (PEG3500) (FA-PEG3500 conjugates) and cystamine-conjugated chlorin e6 (Ce6) (Ce6-cystamine conjugates). FA-PEG3500 was further conjugated with Ce6-cystamine to produce FA-PEG3500-ss-Ce6 conjugates. To the remaining amine end group of Ce6-cystamine conjugates, Ce6 was attached to produce FA-PEG3500-ss-Ce6tri. Nanophotosensitizers of FA-PEG3500-ss-Ce6tri copolymer were smaller than 200 nm. Their shapes were disintegrated by treatment with GSH and then Ce6 released by GSH-dependent manner. Compared to Ce6 alone, FA-PEG3500-ss-Ce6tri copolymer nanophotosensitizers recorded higher Ce6 uptake ratio, reactive oxygen species (ROS) production and cellular cytotoxicity against KB and YD-38 cells. The in vitro and in vivo study approved that delivery of nanophotosensitizers is achieved by folate receptor-sensitive manner. These results indicated that FA-PEG3500-ss-Ce6tri copolymer nanophotosensitizers are superior candidate for treatment of oral cancer.
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Affiliation(s)
- Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea;
| | - Chang-Min Lee
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea;
| | - Young-Il Jeong
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea;
- Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Gyeongnam 50612, Korea
- Correspondence: (Y.-I.J.); (B.-H.K.); Tel.: +82-10-9212-9859 (Y.-I.J.); +82-62-230-6447 (B.-H.K.)
| | - Byung-Hoon Kim
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju 61452, Korea;
- Correspondence: (Y.-I.J.); (B.-H.K.); Tel.: +82-10-9212-9859 (Y.-I.J.); +82-62-230-6447 (B.-H.K.)
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18
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Kang HS, Han JJ, Jung S, Kook MS, Park HJ, Oh HK. Comparison of postoperative condylar changes after unilateral sagittal split ramus osteotomy and bilateral sagittal split ramus osteotomy using 3-dimensional analysis. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 130:505-514. [PMID: 32675028 DOI: 10.1016/j.oooo.2020.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/17/2020] [Accepted: 06/11/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE This study aimed to evaluate postoperative changes in the condyle after unilateral sagittal split ramus osteotomy (USSRO) and to compare them with changes occurring after bilateral sagittal split ramus osteotomy (BSSRO). STUDY DESIGN For 50 condyles from 25 patients, positional and volumetric changes of condyle were analyzed by using computed tomography images taken before, immediately after, and 6 months after surgery and compared between the USRRO and BSSRO groups. RESULTS The condyle showed lateral and inferior displacement immediately after surgery and medial and superior movement at 6 months after surgery in the USSRO and BSSRO groups. No statistically significant difference was found between the 2 groups in the time-course positional change and rotation of the condyle. In the comparison of bodily shift and rotation between operated and nonoperated sides in USSRO group, there were no significant differences between the 2 sides, except for the perioperative rotation pattern on the coronal plane. At 6 months after surgery, the changed volume relative to preoperative condylar volume was only 5.2% in the USSRO group and 2.7% in the BSSRO group. CONCLUSIONS The findings from this study suggest that USSRO can be used effectively in appropriately selected patients; however, temporomandibular joint (TMJ) problems may arise when condylar displacement is excessive enough to exceed physiologic tolerances.
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Affiliation(s)
- Hyo-Sun Kang
- Graduate Student, Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong Joon Han
- Assistant professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea; and Researcher, Hardtissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.
| | - Seunggon Jung
- Associate Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
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Jung S, Oh HK, Kim MS, Lee KY, Park H, Kook MS. Effect of Gellan Gum/Tuna Skin Film in Guided Bone Regeneration in Artificial Bone Defect in Rabbit Calvaria. Materials (Basel) 2020; 13:E1318. [PMID: 32183273 PMCID: PMC7142440 DOI: 10.3390/ma13061318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 11/17/2022]
Abstract
It is necessary to prevent the invasion of soft tissue into bone defects for successful outcomes in guided bone regeneration (GBR). For this reason, many materials are used as protective barriers to bone defects. In this study, a gellan gum/tuna skin gelatin (GEL/TSG) film was prepared, and its effectiveness in bone regeneration was evaluated. The film exhibited average cell viability in vitro. Experimental bone defects were prepared in rabbit calvaria, and a bone graft procedure with beta-tricalcium phosphate was done. The film was used as a membrane of GBR and compared with results using a commercial collagen membrane. Grafted material did not show dispersion outside of bone defects and the film did not collapse into the bone defect. New bone formation was comparable to that using the collagen membrane. These results suggest that the GEL/TSG film could be used as a membrane for GBR.
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Affiliation(s)
- Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea; (S.J.); (H.-K.O.); (H.P.)
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea; (S.J.); (H.-K.O.); (H.P.)
| | - Myung-Sun Kim
- Department of Orthopaedics, School of Medicine, Chonnam National University, Gwangju 61469, Korea;
| | - Ki-Young Lee
- School of Chemical Engineering and Biocosmos Co., Chonnam National University, Gwangju 61186, Korea;
| | - Hongju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea; (S.J.); (H.-K.O.); (H.P.)
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea; (S.J.); (H.-K.O.); (H.P.)
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20
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Koh SH, Jeong YW, Han JJ, Jung S, Kook MS, Oh HK, Park HJ. Orbicularis oris muscle reconstruction and cheiloplasty with Z-plasty in a patient with a transverse facial cleft. Maxillofac Plast Reconstr Surg 2019; 41:55. [PMID: 31844633 PMCID: PMC6885492 DOI: 10.1186/s40902-019-0240-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/06/2019] [Indexed: 11/10/2022] Open
Abstract
Background Transverse facial clefts are Tessier’s number 7 facial cleft among numbers 1–15 in Tessier’s classification of craniofacial malformations, which varies from a simple widening oral commissure to a complete fissure extending towards the external ear. Case presentation In a patient with a transverse facial cleft, to functionally arrange the orbicularis oris muscle and form the oral commissure naturally, we performed a surgical procedure including orbicularis oris muscle reconstruction and cheiloplasty with Z-plasty. Conclusion We achieved good results functionally and esthetically by orbicularis oris muscle reconstruction and cheiloplasty with Z-plasty. The surgical modality of our anatomical repair and 3 months follow-up results are presented.
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Affiliation(s)
- Sung-Hyuk Koh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Yeon-Woo Jeong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 South Korea
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Kang BH, Kang HS, Han JJ, Jung S, Park HJ, Oh HK, Kook MS. A retrospective clinical investigation for the effectiveness of closed reduction on nasal bone fracture. Maxillofac Plast Reconstr Surg 2019; 41:53. [PMID: 31824891 PMCID: PMC6879701 DOI: 10.1186/s40902-019-0236-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/16/2019] [Indexed: 11/13/2022] Open
Abstract
Background The nasal bone is the most protruding bony structure of the facial bones. Nasal bone fracture is the most common facial bone fracture. The high rate of incidence of nasal bone fracture emphasizes the need for systematical investigation of epidemiology, surgical techniques, and complications after surgery. The objective of this study is to investigate the current trends in the treatment of nasal bone fractures and the effectiveness of closed reduction depending on the severity of the nasal bone fracture. Patients and methods A total of 179 patients with a nasal bone fracture from 2009 to 2017 were enrolled. Their clinical examination, patient’s records, and radiographic images of nasal bone fractures were evaluated. Results Patients ranged from children to elderly. There were 156 (87.2%) males and 23 (12.8%) females. Traffic accident (36.9%) was the most common cause of nasal fracture. Orbit fracture (44 patients, 24.6%) was the most common fracture associated with a nasal bone fracture. Complications after surgery included postoperative deformity in 20 (11.2%) patients, nasal obstruction in 11 (6.1%) patients, and olfactory disturbances in 2 (1.1%) patients and patients with more severe nasal bone fractures had higher rates of these complications. Conclusion Closed reduction could be performed successfully within 2 weeks after injury.
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Affiliation(s)
- Byung-Hun Kang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Hyo-Sun Kang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 42, Jebong-ro, Dong-gu, Gwangju, 61469 Republic of Korea
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Jeong YW, Jung S, Han JJ, Park HJ, Kim RY, Kim BH, Kook MS. Effectiveness of Surface Treatment with Amine Plasma for Improving the Biocompatibility of Maxillofacial Plates. Materials (Basel) 2019; 12:ma12162581. [PMID: 31412641 PMCID: PMC6719966 DOI: 10.3390/ma12162581] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/09/2019] [Accepted: 08/12/2019] [Indexed: 11/16/2022]
Abstract
To date, no products have been presented for the surface treatment of metal plates used for repairing maxillofacial defects caused by trauma. Plasma surface treatment is a useful technique for chemically modifying the surfaces of biomaterials. Amine plasma-polymerization is an efficient way to prepare bioactive thin film polymers terminated with nitrogen-containing functional groups. The purpose of this study was to investigate the improvement in biocompatibility of titanium (Ti) plates treated with amine plasma-polymerization, and analyze their surfaces characteristics. To compare biocompatibility levels, in vitro test and animal study were performed using an amine plasma-polymerized Ti plate and an untreated Ti plate. After amine plasma-polymerization, the hydrophilicity of the Ti surface was remarkably improved. Biocompatibility was also improved for the Ti plates treated with amine plasma. The clinical application of this technique will not only shorten the time required for osseointegration, but will also improve the regeneration of bone.
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Affiliation(s)
- Yeon-Woo Jeong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | | | - Byung-Hoon Kim
- Department of Dental Materials, College of Dentistry, Chosun University, Gwangju 61452, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea.
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Heo JJ, Chong JH, Han JJ, Jung S, Kook MS, Oh HK, Park HJ. Reconstruction of the orbital wall using superior orbital rim osteotomy in a patient with a superior orbital wall fracture. Maxillofac Plast Reconstr Surg 2018; 40:42. [PMID: 30581811 PMCID: PMC6277397 DOI: 10.1186/s40902-018-0181-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/13/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Fractures of the orbital wall are mainly caused by traffic accidents, assaults, and falls and generally occur in men aged between 20 and 40 years. Complications that may occur after an orbital fracture include diplopia and decreased visual acuity due to changes in orbital volume, ocular depression due to changes in orbital floor height, and exophthalmos. If surgery is delayed too long, tissue adhesion will occur, making it difficult to improve ophthalmologic symptoms. Thus, early diagnosis and treatment are important. Fractures of the superior orbital wall are often accompanied by skull fractures. Most of these patients are unable to perform an early ocular evaluation due to neurosurgery and treatment. These patients are more likely to show tissue adhesion, making it difficult to properly dissect the tissue for wall reconstruction during surgery. CASE PRESENTATION This report details a case of superior orbital wall reconstruction using superior orbital rim osteotomy in a patient with a superior orbital wall fracture involving severe tissue adhesion. Three months after reconstruction, there were no significant complications. CONCLUSION In a patient with a superior orbital wall fracture, our procedure is helpful in securing the visual field and in delamination of the surrounding tissue.
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Affiliation(s)
- Jae Jin Heo
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Ji-Hun Chong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
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Han JJ, Jung S, Park HJ, Oh HK, Kook MS. Evaluation of Postoperative Mandibular Positional Changes After Mandibular Setback Surgery in a Surgery-First Approach: Isolated Mandibular Surgery Versus Bimaxillary Surgery. J Oral Maxillofac Surg 2018; 77:181.e1-181.e12. [PMID: 30326227 DOI: 10.1016/j.joms.2018.09.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 08/20/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study was to compare postoperative positional changes in the mandible after isolated mandibular surgery (IMS) or bimaxillary surgery (BMS) in a surgery-first approach (SFA). MATERIALS AND METHODS The authors designed and implemented a retrospective cohort study composed of patients who underwent mandibular setback surgery using the SFA. Surgical and postoperative changes were evaluated using lateral cephalograms taken 1 month before surgery (T0), 1 week after surgery (T1), and immediately after debonding of orthodontic appliances (T2; 16.6 ± 8.7 months after surgery). To predict postoperative mandibular positional changes from the increase in vertical dimension (VD) in surgical occlusion, the mandible was rotated counterclockwise to the preoperative VD on the lateral cephalogram at T1, and resultant mandibular positional changes were measured. To evaluate actual postoperative mandibular positional changes between each time point and compare them between the 2 groups, independent t test, paired t test, and repeated-measures analysis of variance were performed. RESULTS Thirty patients were evaluated (16 in IMS group and 14 in BMS group). The 2 groups showed significant time-course mandibular positional changes from T0 to T1 and from T1 to T2 within each group (point B, P < .001), although no statistically significant differences were observed between groups. There was no statistically relevant difference between groups in the predicted and actual postoperative rotational movements. In addition to the mandibular forward movement that resulted from postoperative mandibular counterclockwise rotation, additional horizontal relapse occurred. CONCLUSION The present findings suggest that the mandible exhibits notable postoperative forward movement during postoperative orthodontic treatment, regardless of the extent of the orthognathic surgery in the SFA, and it is necessary to consider mandibular forward movement from the VD increase in surgical occlusion and additional relapse during the treatment planning stage.
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Affiliation(s)
- Jeong Joon Han
- Assistant Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Buk-Gu, Gwangju, Republic of Korea
| | - Seunggon Jung
- Assistant Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Buk-Gu, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Buk-Gu, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Buk-Gu, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Professor, Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Buk-Gu, Gwangju, Republic of Korea.
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Lim SY, Jiang T, Oh MH, Kook MS, Cho JH, Hwang HS. Cone-beam computed tomography evaluation on the changes in condylar long axis according to asymmetric setback in sagittal split ramus osteotomy patients. Angle Orthod 2018; 87:254-259. [PMID: 28253453 DOI: 10.2319/043016-349] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To determine whether the condylar rotation is affected by asymmetric setback in patients undergoing sagittal split ramus osteotomy. MATERIALS AND METHODS Thirty patients who underwent bilateral sagittal split ramus osteotomy setback surgery were divided into the two groups, symmetric setback and asymmetric setback, according to the right/left difference of setback amount (<2.0, ≥2.0 mm). Condylar long axis changes were evaluated using the three-dimensional superimposition of before and immediately after surgery cone-beam computed tomography volume images. Evaluations were performed separately in lesser setback and greater setback side in patients undergoing asymmetric setback, whereas both side condyles were evaluated together in patients undergoing symmetric setback. Condylar axis changes on axial view were correlated with setback amount or right/left setback difference using Pearson correlation analysis. RESULTS In general, the condylar axis change occurred in a pattern of inward rotation. The condyles in patients undergoing symmetric setback showed 3.4° rotation in average. In case of asymmetric setback, the lesser setback side showed larger value (4.3°) than the greater setback side (2.3°) with a statistical significance. In the correlation analysis, setback amount showed no significant correlation with the condylar axis changes in both groups. However, correlation with right/left setback difference showed a positive correlation in lesser setback side of patients undergoing asymmetric setback. CONCLUSION The findings of this study indicate that large amount of setback alone does not contribute to the change in condylar long axis, but asymmetric setback might cause a change in condylar long axis, particularly on the lesser setback side.
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Seong KJ, Kim HJ, Cai B, Kook MS, Jung JY, Kim WJ. Toll-like receptor 2 promotes neurogenesis from the dentate gyrus after photothrombotic cerebral ischemia in mice. Korean J Physiol Pharmacol 2018; 22:145-153. [PMID: 29520167 PMCID: PMC5840073 DOI: 10.4196/kjpp.2018.22.2.145] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 11/03/2017] [Accepted: 12/07/2017] [Indexed: 01/27/2023]
Abstract
The subgranular zone (SGZ) of hippocampal dentate gyrus (HDG) is a primary site of adult neurogenesis. Toll-like receptors (TLRs), are involved in neural system development of Drosophila and innate immune response of mammals. TLR2 is expressed abundantly in neurogenic niches such as adult mammalian hippocampus. It regulates adult hippocampal neurogenesis. However, the role of TLR2 in adult neurogenesis is not well studied in global or focal cerebral ischemia. Therefore, this study aimed to investigate the role of TLR2 in adult neurogenesis after photochemically induced cerebral ischemia. At 7 days after photothrombotic ischemic injury, the number of bromodeoxyuridine (BrdU)-positive cells was increased in both TLR2 knock-out (KO) mice and wild-type (WT) mice. However, the increment rate of BrdU-positive cells was lower in TLR2 KO mice compared to that in WT mice. The number of doublecortin (DCX) and neuronal nuclei (NeuN)-positive cells in HDG was decreased after photothrombotic ischemia in TLR2 KO mice compared to that in WT mice. The survival rate of cells in HDG was decreased in TLR2 KO mice compared to that in WT mice. In contrast, the number of cleaved-caspase 3 (apoptotic marker) and the number of GFAP (glia marker)/BrdU double-positive cells in TLR2 KO mice were higher than that in WT mice. These results suggest that TLR2 can promote adult neurogenesis from neural stem cell of hippocampal dentate gyrus through increasing proliferation, differentiation, and survival from neural stem cells after ischemic injury of the brain.
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Affiliation(s)
- Kyung-Joo Seong
- Dental Science Research Institute, Department of Oral Physiology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Hyeong-Jun Kim
- Dental Science Research Institute, Department of Oral Physiology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Bangrong Cai
- Dental Science Research Institute, Department of Oral Physiology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Ji-Yeon Jung
- Dental Science Research Institute, Department of Oral Physiology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Won-Jae Kim
- Dental Science Research Institute, Department of Oral Physiology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
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Guo J, Wang T, Han JJ, Jung S, Kook MS, Park HJ, Oh HK. Corrective outcome and transverse stability after orthognathic surgery using a surgery-first approach in mandibular prognathism with and without facial asymmetry. Oral Surg Oral Med Oral Pathol Oral Radiol 2018; 126:S2212-4403(18)30053-1. [PMID: 29545077 DOI: 10.1016/j.oooo.2018.01.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/06/2017] [Accepted: 01/20/2018] [Indexed: 11/22/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate corrective outcome and transverse stability after orthognathic surgery via a surgery-first approach (SFA) in mandibular prognathism with and without facial asymmetry using 3-dimensional analysis. STUDY DESIGN Twenty-nine patients who received mandibular setback surgery using SFA were divided into 2 groups according to the menton deviation (4 mm): symmetry group (n = 17) and asymmetry group (n = 12). Using computed tomography images obtained before (T0), immediately after (T1), and 6 months after (T2) surgery, time-dependent changes in variables related to facial asymmetry, including maxillary height, ramal length, frontal and lateral ramal inclination, mandibular body length, and mandibular body height, were evaluated. RESULTS Immediately after surgery, the asymmetry group showed significantly decreased discrepancies between the longer and non-longer sides for all variables (P < .05); there were no significant differences in discrepancies between the 2 groups. During the postoperative period, no significant changes in discrepancies were found in any variable in either group. Compared with T0, the asymmetry group showed significantly decreased discrepancies in ramal length, frontal and lateral ramal inclination, and mandibular body length at T2. CONCLUSIONS Variables related to facial asymmetry showed significant improvement after surgical-orthodontic treatment using SFA, and corrected outcomes showed good postoperative stability in both the symmetry and asymmetry groups.
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Affiliation(s)
- Jinyuan Guo
- Graduate Dental School, Chonnam National University, Gwangju, Republic of Korea
| | - Tongyue Wang
- Department of Oral and Maxillofacial Surgery, Dalian Medical University, Dalian, PR China
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea.
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
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Park Y, Kim BH, Lee SJ, Park HJ, Oh HK, Kim MS, Kook MS. Oxygen and Acrylic Acid Plasma Treatment on Titanium Mesh for Improving the Hydroxyapatite Formation. J Nanosci Nanotechnol 2018; 18:1303-1307. [PMID: 29448578 DOI: 10.1166/jnn.2018.14860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Customized titanium (Ti) meshes were treated with O2 plasma and acrylic acid plasmapolymerization (PPAAc). The optimum conditions for PPAAc were as follows: 20 W, 15 mTorr, and 5 min. Hydroxyapatite formation increased in Ti meshes treated with O2 and PPAAc compared with that in untreated Ti meshes. Moreover, MC3T3-E1 cells exhibited improved cell spreading, attachment, proliferation in PPAAc treated Ti mesh than in untreated Ti mesh. This result revealed that O2 and PPAAc surface treatment on Ti mesh was potential tool for improving the bone formation on the Ti mesh clinically application.
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Affiliation(s)
- Youngseung Park
- School of Dentistry, Chonnam National University, Gwangju, 61186, Korea
| | - Byung-Hoon Kim
- Department of Dental Materials, School of Dentistry, Chosun University, Gwangju, 61452, Korea
| | - Seon-Ju Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, 61186, Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, 61186, Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, 61186, Korea
| | - Myung-Sun Kim
- Department of Orthopaedic Surgery, College of Medicine, Chonnam National University, Gwangju, 61186, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, 61186, Korea
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Oh SH, Kim JW, Kim Y, Lee MN, Kook MS, Choi EY, Im SY, Koh JT. The extracellular matrix protein Edil3 stimulates osteoblast differentiation through the integrin α5β1/ERK/Runx2 pathway. PLoS One 2017; 12:e0188749. [PMID: 29182679 PMCID: PMC5705136 DOI: 10.1371/journal.pone.0188749] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 11/12/2017] [Indexed: 02/07/2023] Open
Abstract
Epidermal growth factor-like repeats and discoidin I-like domain 3 (Edil3) is an extracellular matrix protein containing an Arg-Gly-Asp (RGD) motif that binds integrin. Recently, Edil3 has been implicated in various biological processes, including angiogenesis and cellular differentiation. It can inhibit inflammatory bone destruction. The objective of this study was to explore the role of Edil3 in osteoblast differentiation and its underlying molecular mechanisms. In wild-type mice, high expression levels of Edil3 mRNA were observed in isolated calvaria and tibia/femur bones. Immunohistochemical analysis showed that Edil3 protein was localized along periosteum and calcified regions surrounding bone tissues. When murine calvaria-derived MC3T3-E1 cells were cultured in osteogenic medium containing 50 μg/ml ascorbic acid and 5 mM β-glycerophosphate, Edil3 mRNA and protein expression levels were increased. Treatment with Edil3 protein in growth media increased expression levels of alkaline phosphatase and osteocalcin gene and phosphorylation level of extracellular signal-regulated kinase (ERK). Edil3 treatment with osteogenic medium induced mineralization. Treatment with a neutralizing antibody against α5β1 and MEK inhibitor U0126 inhibited Edil3-enhanced osteogenic marker gene expression and mineral deposition. Edil3 increased protein expression levels of transcription factor runt-related transcription factor2 (Runx2). Edil3-induced Runx2 protein expression was suppressed by pretreatment with U0126. Taken together, these results suggest that Edil3 may stimulate osteoblast differentiation and matrix mineralization by increasing expression of Runx2 through α5β1 integrin /ERK pathway.
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Affiliation(s)
- Sin-Hye Oh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Jung-Woo Kim
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Yuri Kim
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Mi Nam Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Eun Young Choi
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Suhn-Young Im
- Department of Biological Sciences, College of Natural Sciences, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong-Tae Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
- * E-mail:
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An JH, Park SH, Han JJ, Jung S, Kook MS, Park HJ, Oh HK. Treatment of dental implant displacement into the maxillary sinus. Maxillofac Plast Reconstr Surg 2017; 39:35. [PMID: 29204419 PMCID: PMC5701899 DOI: 10.1186/s40902-017-0133-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/13/2017] [Indexed: 12/15/2022] Open
Abstract
Background Displacement of dental implants into the maxillary sinus is rare, but it primarily occurs in patients with severe pneumatization of the maxillary sinus and/or deficiency of the alveolar process. Some complications such as the infection of the paranasal sinuses and formation of the oroantral fistula can be followed by the displacement of a dental implant. Therefore, the displaced implant has to be removed immediately with surgical intervention show and another plan for rehabilitation should be considered. Main body The conventional procedure for the removal of a displaced implant from the maxillary sinus involves sinus bone grafting and new implant placement performed in two or more steps with a significant time gap in between. Simplification of these surgical procedures can decrease the treatment duration and patient discomfort. Conclusions In this review, we discuss the anatomical characteristics of the maxillary sinus and the complications associated with implant displacement into the sinus.
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Affiliation(s)
- Jun-Hyeong An
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
| | - Sang-Hoon Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, 500-757 Republic of Korea
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Park SH, An JH, Han JJ, Jung S, Park HJ, Oh HK, Kook MS. Surgical excision of osteochondroma on mandibular condyle via preauricular approach with zygomatic arch osteotomy. Maxillofac Plast Reconstr Surg 2017; 39:32. [PMID: 29109944 PMCID: PMC5655402 DOI: 10.1186/s40902-017-0129-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/13/2017] [Indexed: 05/29/2023] Open
Abstract
Background Osteochondroma is a benign tumor that tends to develop in mandibular condyle and coronoid process in the craniofacial region. If tumor mass has grown from condyle into the infratemporal space with zygomatic arch obstructing the access, there are risks associated with surgical exposure and local resection of these masses. Case presentation This study reports on a case of osteochondroma on mandibular condylar head where we treated with surgical excision via preauricular approach with 3D analysis. After the local resection, there were no surgical and post-operative complications until 8-month follow-up period. Conclusions In local excision of osteochondroma, our method is a minimally invasive method. It is a good example of osteochondroma treatment.
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Affiliation(s)
- Sang-Hoon Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
| | - Jun-Hyeong An
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
| | - Jeong Jun Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 Korea
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Yeo BR, Han JJ, Jung S, Park HJ, Oh HK, Kook MS. Horizontal changes of the proximal mandibular segment after mandibular setback surgery using 3-dimensional computed tomography data. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 125:14-19. [PMID: 28958899 DOI: 10.1016/j.oooo.2017.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/20/2017] [Accepted: 07/14/2017] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To evaluate horizontal changes of the proximal mandibular segment after mandibular setback surgery using 3-dimensional computed tomography (3-D CT). STUDY DESIGN This study included 66 patients who underwent bilateral sagittal split ramus osteotomy for correction of mandibular prognathism. With the use of 3-D CT data obtained preoperatively (T1), immediately postoperatively (T2), and 6 months postoperatively (T3), horizontal changes of the proximal mandibular segment, including the intercondylar width, the intergonial width, and the frontal-ramal inclination were evaluated. RESULTS The value of the right frontal-ramal inclination was 11.43 ± 1.36° at T1, 11.91 ± 1.96° at T2, and 10.7 ± 1.5° at T3. The values of the left frontal-ramal inclination were 6.10 ± 1.03° at T1, 8.17 ± 1.66° at T2, and 7.66 ± 1.65° at T3. The values of the intergonial width were 99.67 ± 1.67 mm at T1, 98.24 ± 1.72 mm at T2, and 97.08 ± 1.71 mm at T3. The intergonial width was significantly decreased at T3 compared with T1 (P < .001). The values of the intercondylar width were 123.51 ± 1.66 mm at T1, 123.9 ± 1.66 mm at T2, and 122.88 ± 1.58 mm at T3. CONCLUSIONS Lower facial width at mandibular angle region decreased immediately after mandibular setback surgery and showed further decreases during the postoperative period.
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Affiliation(s)
- Bo-Ram Yeo
- Graduate Dental School, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea.
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Roh HS, Lee CM, Hwang YH, Kook MS, Yang SW, Lee D, Kim BH. Addition of MgO nanoparticles and plasma surface treatment of three-dimensional printed polycaprolactone/hydroxyapatite scaffolds for improving bone regeneration. Materials Science and Engineering: C 2017; 74:525-535. [DOI: 10.1016/j.msec.2016.12.054] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 11/03/2016] [Accepted: 12/12/2016] [Indexed: 12/20/2022]
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Roh HS, Kim SY, Jung SC, Kook MS, Kim BH. In Vitro Study on the Plasma-Polymerization of Propionaldehyde and Allylglycidyl Ether for Immobilization of Recombinant Human Bone Morphogenetic Protein-2. J Nanosci Nanotechnol 2017; 17:2316-2319. [PMID: 29639155 DOI: 10.1166/jnn.2017.13312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this study, recombinant human bone morphogenetic protein-2 (rhBMP-2) was directly immobilized on the plasma-polymerized propionaldehyde (PA) and allylglycidyl ether (AGE) surface through the imine bonding and epoxy-amine bonding, respectively. Aldehyde and epoxide plasma-polymerization were carried out at plasma power 60 W for 10 min and monomers were used to PA and AGE. After the plasma-polymerization and rhBMP-2 immobilization, substrate surfaces were characterized by contact angle, field emission scanning electron microscopy, and attenuated total reflectance Fourier transform infrared. In addition, the biological activities of MC3T3-E1 cells were evaluated by initial adhesion and alkaline phosphate (ALP) activity. The rhBMP-2 immobilized PA and AGE surfaces promoted significantly higher ALP activity of MC3T3-E1 cells than pristine surface.
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Kim JW, Lee MN, Jeong BC, Oh SH, Kook MS, Koh JT. Chemical inhibitors of c-Met receptor tyrosine kinase stimulate osteoblast differentiation and bone regeneration. Eur J Pharmacol 2017; 806:10-17. [PMID: 28322831 DOI: 10.1016/j.ejphar.2017.03.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 03/13/2017] [Accepted: 03/15/2017] [Indexed: 01/19/2023]
Abstract
The c-Met receptor tyrosine kinase and its ligand, hepatocyte growth factor (HGF), have been recently introduced to negatively regulate bone morphogenetic protein (BMP)-induced osteogenesis. However, the effect of chemical inhibitors of c-Met receptor on osteoblast differentiation process has not been examined, especially the applicability of c-Met chemical inhibitors on in vivo bone regeneration. In this study, we demonstrated that chemical inhibitors of c-Met receptor tyrosine kinase, SYN1143 and SGX523, could potentiate the differentiation of precursor cells to osteoblasts and stimulate regeneration in calvarial bone defects of mice. Treatment with SYN1143 or SGX523 inhibited HGF-induced c-Met phosphorylation in MC3T3-E1 and C3H10T1/2 cells. Cell proliferation of MC3T3-E1 or C3H10T1/2 was not significantly affected by the concentrations of these inhibitors. Co-treatment with chemical inhibitor of c-Met and osteogenic inducing media enhanced osteoblast-specific genes expression and calcium nodule formation accompanied by increased Runx2 expression via c-Met receptor-dependent but Erk-Smad signaling independent pathway. Notably, the administration of these c-Met inhibitors significantly repaired critical-sized calvarial bone defects. Collectively, our results suggest that chemical inhibitors of c-Met receptor tyrosine kinase might be used as novel therapeutics to induce bone regeneration.
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Affiliation(s)
- Jung-Woo Kim
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Mi Nam Lee
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Byung-Chul Jeong
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; Department of Pharmacology, Seonam University Medical School, Namwon, Chonbuk 55724, Republic of Korea
| | - Sin-Hye Oh
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Min-Suk Kook
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jeong-Tae Koh
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea; Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea.
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Li J, Ryu SY, Park HJ, Kook MS, Jung S, Han JJ, Oh HK. Changes in condylar position after BSSRO with and without Le Fort I osteotomy via surgery-first approach in mandibular prognathism with facial asymmetry. Oral Surg Oral Med Oral Pathol Oral Radiol 2017; 123:661-669. [PMID: 28392230 DOI: 10.1016/j.oooo.2017.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/13/2016] [Accepted: 01/26/2017] [Indexed: 01/18/2023]
Abstract
OBJECTIVES This study aimed to evaluate changes in condylar position after bilateral sagittal split ramus osteotomy (BSSRO) with and without Le Fort I osteotomy via the surgery-first approach (SFA) in patients with facial asymmetry. STUDY DESIGN Eighteen patients (36 condyles) who received surgical-orthodontic treatment using the SFA were included and divided into 2 groups depending on the extent of surgery: BSSRO-only group (n = 12) and BSSRO with Le Fort I osteotomy group (n = 6). Using computed tomography images taken preoperatively, immediately postoperatively, and 6 months postoperatively, surgical and postoperative changes of the condylar position were analyzed 3-dimensionally. RESULTS Both groups showed mainly inferolateral displacement with inward rotation immediately after surgery, and superomedial returning movement with outward rotation 6 months after surgery. There was no statistical difference in time-course changes of the condylar position between the 2 groups. In comparing the deviated and nondeviated sides, the deviated side showed significantly greater amount of bodily shift and rotational movement after surgery compared with the nondeviated side in both groups. CONCLUSIONS These results suggest that BSSRO via the SFA, either with or without Le Fort I osteotomy, may cause condylar displacement after surgery and that the displaced condyles return to their original position on both the deviated and the nondeviated sides.
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Affiliation(s)
- Jiyin Li
- Graduate Dental School, Chonnam National University, Gwangju, Republic of Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea; Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Republic of Korea.
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
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Kim GS, Lee JW, Chong JH, Han JJ, Jung S, Kook MS, Park HJ, Ryu SY, Oh HK. Evaluation of clinical outcomes of implants placed into the maxillary sinus with a perforated sinus membrane: a retrospective study. Maxillofac Plast Reconstr Surg 2016; 38:50. [PMID: 27995123 PMCID: PMC5136533 DOI: 10.1186/s40902-016-0097-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/18/2016] [Indexed: 11/29/2022] Open
Abstract
Background The aim of this study was to evaluate the clinical outcomes of implants that were placed within the maxillary sinus that has a perforated sinus membrane by the lateral window approach. Methods We examined the medical records of the patients who had implants placed within the maxillary sinus that has a perforated sinus membrane by the lateral approach at the Department of Oral and Maxillofacial Surgery of Chonnam National University Dental Hospital from January 2009 to December 2015. There were 41 patients (male:female = 28:13). The mean age of patients was 57.2 ± 7.2 years at the time of operation (range, 20–76 years). The mean follow-up duration was 2.1 years (range, 0.5–5 years) after implant placement. Regarding the method of sinus elevation, only the lateral approach was included in this study. Results Ninety-nine implants were placed in 41 patients whose sinus membranes were perforated during lateral approach. The perforated sinus membranes were repaired with a resorbable collagen membrane. Simultaneous implant placements with sinus bone grafting were performed in 37 patients, whereas delayed placements were done in four patients. The average residual bone height was 3.4 ± 2.0 mm in cases of simultaneous implant placement and 0.6 ± 0.9 mm in cases of delayed placement. Maxillary bone graft with implant placement, performed on the patients with a perforated maxillary sinus membrane did not fail, and the cumulative implant survival rate was 100%. Conclusions In patients with perforations of the sinus mucosa, sinus elevation and implant placement are possible regardless of the location and size of membrane perforation. Repair using resorbable collagen membrane is a predictable and reliable technique.
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Affiliation(s)
- Gwang-Seok Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Jae-Wang Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Jong-Hyon Chong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
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Lee JW, An JH, Park SH, Chong JH, Kim GS, Han J, Jung S, Kook MS, Oh HK, Ryu SY, Park HJ. Retrospective clinical study of an implant with a sandblasted, large-grit, acid-etched surface and internal connection: analysis of short-term success rate and marginal bone loss. Maxillofac Plast Reconstr Surg 2016; 38:42. [PMID: 27882311 PMCID: PMC5097118 DOI: 10.1186/s40902-016-0089-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/29/2016] [Indexed: 12/03/2022] Open
Abstract
Background The purpose of this retrospective study was to evaluate the clinical utility of an implant with a sandblasted, large-grit, acid-etched (SLA) surface and internal connection. Methods Six patients who received dental implants in the Department of Oral and Maxillofacial Surgery, Chonnam National University Dental Hospital, were analyzed by factors influencing the success rate and marginal bone loss. Factors included patient’s age, sex, implant installation site, whether bone graft was done, type of bone graft materials, approaching method if sinus lift was done, and the size of the fixture. In addition, the marginal bone loss was analyzed by using a radiograph. Results All implants were successful, and the cumulative survival rate was 100 %. Average marginal bone loss of 6 months after the installation was 0.52 mm and 20 months after the functional loading was 1.06 mm. Total marginal bone resorption was 1.58 mm on average. There was no statistically significant difference in mesial and distal marginal bone loss. Conclusions The short-term clinical success rate of the implant with an SLA surface and internal connection was satisfactory. Moreover, the marginal bone loss was also consistent with the implant success criteria.
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Affiliation(s)
- Jae-Wang Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Jun Hyeong An
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Sang-Hoon Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Jong-Hyon Chong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Gwang-Seok Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - JeongJoon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, Republic of Korea
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Han JJ, Chong JH, Ryu SY, Oh HK, Park HJ, Jung S, Kook MS. Postoperative changes in mandibular position after mandibular setback surgery via the surgery-first approach in relation to the increase of vertical dimension and the amount of mandibular setback. Oral Surg Oral Med Oral Pathol Oral Radiol 2016; 122:666-671. [PMID: 27717716 DOI: 10.1016/j.oooo.2016.07.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/26/2016] [Accepted: 07/23/2016] [Indexed: 11/19/2022]
Abstract
OBJECTIVES This study aimed to compare preoperatively predicted rotational relapse with actual post-treatment mandibular position after mandibular setback surgery via the surgery-first approach and to evaluate the effect of the increase of vertical dimension (VD) on surgical occlusion and the amount of mandibular setback on postoperative mandibular positional changes. STUDY DESIGN Twenty-nine patients who underwent bilateral sagittal split ramus osteotomy for mandibular prognathism were evaluated by using lateral cephalograms, which had been obtained preoperatively, immediately postoperatively, and immediately after debonding. Increase of VD on surgical occlusion was measured preoperatively. We estimated the mandibular forward movement resulting from the postoperative mandibular anticlockwise rotation during postoperative orthodontic treatment and compared it with the actual post-treatment mandibular position. RESULTS The actual postoperative mandibular forward movement (2.1 mm) was significantly greater compared with the forward movement (1 mm) predicted preoperatively (P < .01). The postoperative mandibular forward movement was greater in the groups with greater VD increase (>1.5 mm) or greater mandibular setback (>10 mm), even though there was no statistically significant difference. CONCLUSIONS These results suggest that additional postoperative relapse may occur with mandibular rotational relapse, and VD increase and the amount of mandibular setback may affect post-treatment mandibular position in surgery-first orthodontic treatment.
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Affiliation(s)
- Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jong-Hyon Chong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Republic of Korea.
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Choi H, Jeong BC, Kook MS, Koh JT. Betulinic acid synergically enhances BMP2-induced bone formation via stimulating Smad 1/5/8 and p38 pathways. J Biomed Sci 2016; 23:45. [PMID: 27188281 PMCID: PMC4869197 DOI: 10.1186/s12929-016-0260-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 05/06/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Healing of bone defects is a dynamic and orchestrated process that relies on multiple growth factors and cell types. Bone morphogenetic protein 2 (BMP2) is a key growth factor for bone healing, which stimulates mesenchymal stem cells to differentiate into osteoblasts. Betulinic acid (BetA) is a natural pentacyclic triterpenoid from plants. This study aimed to examine combinatory effects of BetA and BMP2 on ectopic bone generation in mice. RESULTS In MC3T3-E1 preosteoblast culture, 10-15 μM of BetA increased the alkaline phosphatase (ALP) activity and expression levels of osteogenic marker genes without the decreased cell viability. In addition, BetA synergistically enhanced BMP2-induced gene expressions and mineralization with the enhancement of phosphorylation of Smad1/5/8 and p38. In an in vivo ectopic bone formation model, combination of BetA (50 μg) and BMP2 (3 μg) resulted in increases in the amount of new bone generation, compared with treatment with BMP2 alone. Histological studies showed that bone generation with cortical and trabecular structures was resulted from the combination of BetA and BMP2. CONCLUSION BetA can enhance in vivo osteogenic potentials of BMP2, possibly via stimulating Smad 1/5/8 and p38 pathways, and combination of both agents can be considered as a therapeutic strategy for bone diseases.
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Affiliation(s)
- Hyuck Choi
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Animal Nutrition Physiology Team, National Institute of Animal Science, Rural Development Administration, Wanju-gun, Republic of Korea
| | - Byung-Chul Jeong
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jeong-Tae Koh
- Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea. .,Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.
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Ahn SH, Song JE, Kim S, Cho SH, Lim YK, Kook JK, Kook MS, Lee TH. NOX1/2 activation in human gingival fibroblasts by Fusobacterium nucleatum facilitates attachment of Porphyromonas gingivalis. Arch Microbiol 2016; 198:573-83. [PMID: 27071620 DOI: 10.1007/s00203-016-1223-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 03/22/2016] [Accepted: 04/06/2016] [Indexed: 10/22/2022]
Abstract
Periodontal diseases are infectious polymicrobial inflammatory diseases that lead to destruction of the periodontal ligament, gingiva, and alveolar bone. Sequential colonization of a broad range of bacteria, including Fusobacterium nucleatum and Porphyromonas gingivalis, is an important phenomenon in this disease model. F. nucleatum is a facultative anaerobic species thought to be a key mediator of dental plaque maturation due to its extensive coaggregation with other oral bacteria, while P. gingivalis is an obligate anaerobic species that induces gingival inflammation by secreting various virulence factors. The formation of a bacterial complex by these two species is central to the pathogenesis of periodontal disease. Reactive oxygen species (ROS) are produced during bacterial infections and are involved in intracellular signaling. However, the impact of oral bacteria-induced ROS on the ecology of F. nucleatum and P. gingivalis has yet to be clarified. In the present study, we investigated ROS production induced in primary human oral cells by F. nucleatum and P. gingivalis and its effect on the formation of their bacterial complexes and further host cell apoptosis. We found that in primary human gingival fibroblasts (GFs), two NADPH oxidase isoforms, NOX1 and NOX2, were activated in response to F. nucleatum infection but not P. gingivalis infection. Accordingly, increased NADPH oxidase activity and production of superoxide anion were observed in GFs after F. nucleatum infection, but not after P. gingivalis infection. Interestingly, in NOX1, NOX2, or NOX1/NOX2 knockdown cells, the number of P. gingivalis decreased when the cells were coinfected with F. nucleatum. A similar pattern of host cell apoptosis was observed. This implies that F. nucleatum contributes to attachment of P. gingivalis by triggering activation of NADPH oxidase in host cells, which may provide an environment more favorable to strict anaerobic bacteria and have a subsequent effect on apoptosis of host cells.
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Affiliation(s)
- Sun Hee Ahn
- Department of Oral Biochemistry, Dental Science Research Institute, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Ji-Eun Song
- Department of Molecular Medicine (BK21plus), Graduate School, Chonnam National University, Gwangju, Republic of Korea
| | - Suhee Kim
- Department of Molecular Medicine (BK21plus), Graduate School, Chonnam National University, Gwangju, Republic of Korea
| | - Sung-Hyun Cho
- Department of Molecular Medicine (BK21plus), Graduate School, Chonnam National University, Gwangju, Republic of Korea
| | - Yun Kyong Lim
- Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Joong-Ki Kook
- Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Tae-Hoon Lee
- Department of Oral Biochemistry, Dental Science Research Institute, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea. .,Department of Molecular Medicine (BK21plus), Graduate School, Chonnam National University, Gwangju, Republic of Korea.
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Park YO, Myung SW, Kook MS, Jung SC, Kim BH. Cell Proliferation on Macro/Nano Surface Structure and Collagen Immobilization of 3D Polycaprolactone Scaffolds. J Nanosci Nanotechnol 2016; 16:1415-1419. [PMID: 27433597 DOI: 10.1166/jnn.2016.11920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, 3D polycaprolactone (PCL) scaffolds were fabricated by 3D printing technique. The macro/nano morphology of, 3D PCL scaffolds surface was etched with oxygen plasma. Acrylic acid (AA) plasma-polymerization was performed to functionalize the macro/nano surface with carboxyl groups and then collagen was immobilized with plasma-polymerized 3D PCL scaffolds. After O2 plasma and AA plasma-polymerization, contact angles were decreased. The FE-SEM and AFM results showed that O2 plasma is increased the surface roughness. The MTT assay results showed that proliferation of the M3CT3-E1 cells increased on the oxygen plasma treated and collagen immobilized 3D PCL scaffolds.
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Kim BG, Kim JH, Kim MI, Han JJ, Jung S, Kook MS, Park HJ, Ryu SY, Oh HK. Retrospective study on factors affecting the prognosis in oral cancer patients who underwent surgical treatment only. Maxillofac Plast Reconstr Surg 2016; 38:3. [PMID: 26807400 PMCID: PMC4715147 DOI: 10.1186/s40902-015-0047-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 12/01/2015] [Indexed: 11/30/2022] Open
Abstract
Background This study was performed to evaluate their 5-year survival rates and identify the factors affecting the prognosis of oral cancer patients who had undergone surgical treatment only. Methods Among 130 patients who were diagnosed with malignant tumor of oral, maxillofacial, and surgical treated in the Department of Oral and Maxillofacial Surgery at Chonnam National University Hospital within a period from January 2000 to December 2010, for 11 years, 84 patients were investigated who were followed up for more than 5 years after radical surgery; oral cancer is primary and received only surgical treatment. The survival rate according to gender, age, type and site of cancer, TNM stage, cervical lymph node metastasis and its stage, recurrence or metastasis, time of recurrence and metastasis, and differentiation were investigated and analyzed. Results Overall, 5-year survival rate in patients who received only surgical treatment was 81.2 %, and disease-specific 5-year survival rate was 83.1 %. The disease-specific 5-year survival rate based on TNM stage, metastasis of cervical lymph node, N stage, and presence of recurrence/metastasis was a significant difference (p < 0.05). The disease-specific 5-year survival rate based on sex, age, type of tumor, primary site, and differentiation was not a significant difference (p > 0.05). Conclusions These results suggest that good survival rate can be obtained with surgical treatment only, and stage of oral cancer, cervical lymph node metastasis and stage, recurrence or metastasis, time of recurrence, and metastasis have a significant effect on survival rate in oral cancer patients.
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Affiliation(s)
- Byeong-Guk Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Jun-Hwa Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Myung-In Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju, 500-757 South Korea
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Park JP, Shin HJ, Park SG, Oh HK, Choi CH, Park HJ, Kook MS, Ohk SH. Screening and development of DNA aptamers specific to several oral pathogens. J Microbiol Biotechnol 2016; 25:393-8. [PMID: 25269812 DOI: 10.4014/jmb.1407.07019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Aptamers are composed of single-stranded oilgonucleotides that can selectively bind desired molecules. It has been reported that RNA or DNA could act as not only a genetic messenger but also a catalyst in metabolic pathways. RNA aptamers (average sizes 40-50 bp) are smaller than antibodies and have strong binding capacities to target molecules, similar to antigen-antibody interactions. Once an aptamer was selected, it can be readily produced in large quantities at low cost. The objectives of this study are to screen and develop aptamers specific to oral pathogens such as Porphyromonas gingivalis, Treponema denticola, and Streptococcus mutans. The bacterial cell pellet was fixed with formaldehyde as a target molecule for the screening of aptamers. The SELEX method was used for the screening of aptamers and a modified western blot analysis was used to verify their specificities. Through SELEX, 40 kinds of aptamers were selected and the specificity of the aptamers to the bacterial cells was confirmed by modified western blot analysis. Through the SELEX method, 40 aptamers that specifically bind to oral pathogens were screened and isolated. The aptamers showed possibility as effective candidates for the detection agents of oral infections.
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Affiliation(s)
- Jung-Pyo Park
- Department of Oral and Maxillofacial Surgery, Chonnam National University, Gwangju 500-757, Republic of Korea
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Kim MI, Kim JH, Jung S, Park HJ, Oh HK, Ryu SY, Kook MS. Condylar positioning changes following unilateral sagittal split ramus osteotomy in patients with mandibular prognathism. Maxillofac Plast Reconstr Surg 2015; 37:36. [PMID: 26501042 PMCID: PMC4608983 DOI: 10.1186/s40902-015-0036-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 10/08/2015] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND This study was performed to evaluate three-dimensional positional change of the condyle using three-dimensional computed tomography (3D-CT) following unilateral sagittal split ramus osteotomy (USSRO) in patients with mandibular prognathism. METHODS This study examined two patients exhibiting skeletal class III malocclusion with facial asymmetry who underwent USSRO for a mandibular setback. 3D-CT was performed before surgery, immediately after surgery, and 6 months postoperatively. After creating 3D-CT images by using the In-vivo 5™ program, the axial plane, coronal plane, and sagittal plane were configured. Three-dimensional positional changes from each plane to the condyle, axial condylar head axis angle (AHA), axial condylar head position (AHP), frontal condylar head axis angle (FHA), frontal condylar head position (FHP), sagittal condylar head axis angle (SHA), and sagittal condylar head position (SHP) of the two patients were measured before surgery, immediately after surgery, and 6 months postoperatively. RESULTS In the first patient, medial rotation of the operated condyle in AHA and anterior rotation in SHA were observed. There were no significant changes after surgery in AHP, FHP, and SHP after surgery. In the second patient, medial rotation of the operated condyle in AHA and lateral rotation of the operated condyle in FHA were observed. There were no significant changes in AHP, FHP, and SHP postoperatively. This indicates that in USSRO, postoperative movement of the condylar head is insignificant; however, medial rotation of the condylar head is possible. Although three-dimensional changes were observed, these were not clinically significant. CONCLUSIONS The results of this study suggest that although three-dimensional changes in condylar head position are observed in patients post SSRO, there are no significant changes that would clinically affect the patient.
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Affiliation(s)
- Myung-In Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
| | - Jun-Hwa Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77, Yongbongro, Buk-Gu, Gwangju 500-757 South Korea
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Kim JH, Shet UK, Kim BG, Kim MI, Kook MS, Oh HK, Ryu SY, Park HJ, Jung S. Aplastic anemia and dental implant rehabilitation: a clinical trial. J Korean Assoc Oral Maxillofac Surg 2015; 41:265-9. [PMID: 26568929 PMCID: PMC4641218 DOI: 10.5125/jkaoms.2015.41.5.265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 09/16/2015] [Accepted: 09/25/2015] [Indexed: 11/07/2022] Open
Abstract
The purpose of this study was to investigate implant-supported restoration as a technique for restoring missing teeth in patients with aplastic anemia. Recurrent bleeding from wound sites leads to persistent release of iron in the tissue. Excessive iron in tissue is related to clinical findings, including fibrosis, poor wound healing, and high level of angiogenesis, which are possible etiological factors of reduced osseointegration. A 44-year-old female patient with aplastic anemia was treated with multiple endosseous implants throughout the mandible and in the posterior region of the maxilla. After 14 implants were placed, radiological and clinical parameters were assessed during the follow-up period. Marginal bone did not change significantly during the follow-up period. The fine trabecular bone in intimate contact and enclosing the implant fixture was sufficient for successful osseointegration. None of the 14 implants were associated with compilations during the seven-year experimental period. This study suggests that dental implant procedures are a safe and reliable treatment option for restoration of missing dentition in patients with aplastic anemia.
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Affiliation(s)
- Jun-Hwa Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Uttom Kumar Shet
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Byeong-Guk Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Myung-In Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
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Choi DY, Bak TY, Hwang YH, Yang SW, Jung SC, Kook MS, Kim BH. Preparation of O2 Plasma Treated Polycaprolactone/Nano TiO2 Composites and In Vitro Bioactivity. J Nanosci Nanotechnol 2015; 15:5653-5655. [PMID: 26369132 DOI: 10.1166/jnn.2015.10450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polycaprolactone (PCL)/TiO2 composite films (PTCFs) were prepared by a solvent casting method at various concentrations of TiO2 (1, 3, 5, and 10 wt%) and then treated using oxygen plasma. The hydrophilicity of the oxygen plasma treated PTCFs increased as the treatment time was increased, due to the oxygen induced production of polar species at the surface of the PTCFs. In vitro bioactivities of the composite films were examined by immersion in simulated body fluid for up to 7 days. It was found that the oxygen plasma treatment significantly influenced the in vitro bioactivity of the PTCFs.
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Yang JW, Park HJ, Yoo KH, Chung K, Jung S, Oh HK, Kim HS, Kook MS. A comparison study between periosteum and resorbable collagen membrane on iliac block bone graft resorption in the rabbit calvarium. Head Face Med 2014; 10:15. [PMID: 24886656 PMCID: PMC4024311 DOI: 10.1186/1746-160x-10-15] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 05/05/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To compare the different resorption patterns between resorbable membrane barrier and periosteum after iliac block bone grafting radiographically and histologically. METHODS Eighteen mature male rabbits weighing from 2.0 to 2.5 kg were used. The recipient site was the rabbit skull, and autogenous iliac bone was used as the grafting material. The harvested iliac block bones were divided in the following groups: autogenous iliac block bone with preservation of the periosteum (the periosteum group), autogenous iliac block bone covered with a resorbable collagen membrane (Biomesh®, Samyang Co, Korea) after removing the periosteum (the collagen membrane group), and autogenous iliac block bones with removal of the periosteum (the control group). In each experimental group, periosteum or resorbable collagen membrane of the donor site was fixed directed to the periosteum of the recipient site. The specimens were examined macroscopically, radiographically, histologically, and histomorphometrically at every 2, 4, and 8 weeks. RESULTS All groups presented excellent bone graft healing state without inflammation, dehiscence, or displacement. The radiolucency increased from mild to moderate in all groups over the experiment. The mean thickness of the upper end of the cortical iliac bone graft was statistically significantly different between the control group and the periosteum group, between the four-week and eight-week control group, and between the four- week and eight-week periosteum group (p & 0.05). CONCLUSION This study suggests that both the periosteum and the resorbable collagen membrane may help to prevent soft tissue infiltration into the bone graft and to reduce bone graft resorption compared to block graft alone.
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Affiliation(s)
- Ji-Woong Yang
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
| | - Kil-Hwa Yoo
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
| | - Kwang Chung
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
| | - Hyung-Seok Kim
- Department of Forensic Medicine, Chonnam National University Medical School, Gwang-Ju, Republic of Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, Chonnam National University School of Dentistry, 77 Yongbong-Dong Buk-Gu 500-757, Gwang-Ju, Republic of Korea
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Choi HI, Chung KJ, Yang HY, Ren L, Sohn S, Kim PR, Kook MS, Choy HE, Lee TH. Peroxiredoxin V selectively regulates IL-6 production by modulating the Jak2-Stat5 pathway. Free Radic Biol Med 2013; 65:270-279. [PMID: 23831231 DOI: 10.1016/j.freeradbiomed.2013.06.038] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 05/26/2013] [Accepted: 06/21/2013] [Indexed: 01/23/2023]
Abstract
Mammalian peroxiredoxin V (PrdxV) is a multifunctional protein that protects cells from DNA damage and inhibits stress-induced apoptosis. However, PrdxV is also known to be involved in modulating lipopolysaccharide (LPS)-induced host cell signaling, but its precise role is not fully understood. In this study, we used stably transfected RAW264.7 cells and transiently transfected 293-mTLR4-MD2-CD14 cells expressing wild-type (WT) or mutant (C48S) PrdxV to characterize the function and mechanism of action of PrdxV in LPS-induced immune responses. We found that PrdxV selectively reduces production of interleukin 6 (IL-6) by inhibiting activation of signal transducer and activator of transcription 5 (Stat5) through interaction with Jak2. Notably, this activity of PrdxV was dependent on its catalytic Cys48 residue, but not its peroxidase activity. The binding of to Jak2 effectively inhibited Jak2 phosphorylation, but PrdxV did not act as efficiently as SOCS1 (suppressor of cytokine signaling 1). Our results suggest that PrdxV is a key mediator contributing to the regulation of LPS/TLR4-induced immune responses.
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Affiliation(s)
- Hoon-In Choi
- Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Kyoung-Jin Chung
- Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea; Technical University of Dresden, Department of Medicine, Division of Vascular inflammation, 01307 Dresden, Germany
| | - Hee-Young Yang
- Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Lina Ren
- Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Sungoh Sohn
- Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Poo-Reun Kim
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Min-Suk Kook
- Department of Oral & Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Hyon E Choy
- Department of Microbiology and Genome Research Center for Enteropathogenic Bacteria, Chonnam National University Medical School, Gwangju 501-746, Republic of Korea
| | - Tae-Hoon Lee
- Dental Science Research Institute and the BK21 Project, Medical Research Center for Biomineralization Disorders, School of Dentistry, Chonnam National University, Gwangju, 500-757, Republic of Korea.
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Chang JS, Yoo KH, Yoon SH, Ha J, Jung S, Kook MS, Park HJ, Ryu SY, Oh HK. Odontogenic infection involving the secondary fascial space in diabetic and non-diabetic patients: a clinical comparative study. J Korean Assoc Oral Maxillofac Surg 2013; 39:175-81. [PMID: 24471039 PMCID: PMC3858126 DOI: 10.5125/jkaoms.2013.39.4.175] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/31/2013] [Accepted: 08/05/2013] [Indexed: 12/21/2022] Open
Abstract
Objectives This retrospective study was performed to evaluate the clinical impact of diabetes mellitus on the prognosis in secondary space infection. Materials and Methods Medical records, radiographic images, computed tomography, and microbial studies of 51 patients (25 diabetic patients and 26 non-diabetic patients) were reviewed. Patients were diagnosed as secondary fascial space infections with odontogenic origin and underwent treatment at Chonnam National University Hospital, in Department of Oral and Maxillofacial Surgery, from January 2007 to February 2009. Results Compared to patients without diabetes, patients with diabetes were presented with the following characteristics: older age (diabetic patients: 62.9 years, non-diabetic patients, 47.8 years), more spaces involved (diabetic patients, 60%; non-diabetic patients, 27.3%), more intense treatment, longer hospitalization (diabetic patients, 28.9 days; non-diabetic patients, 15.4 days), higher white blood cell and C-reactive protein values, higher incidence of complication (diabetic patients, 40%; non-diabetic patients, 7.7%), and distinctive main causative microorganisms. Conclusion These results suggest that the prognosis of diabetic patients is poorer than that of non-diabetic patients in secondary space infections since they had greater incidence rates of involved spaces, abnormal hematologic findings, more complications, and additional procedures, such as tracheostomy.
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Affiliation(s)
- Je-Shin Chang
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Kil-Hwa Yoo
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sung Hwan Yoon
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jiwon Ha
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sun-Youl Ryu
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju, Korea
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