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Park DH, Jun JH, Yun SH, Choi BS, Fiorellini JP, Tallarico M, Hwang KG, Park CJ. Semi-customized three-dimensional ultra-fine titanium meshes in guided bone regeneration for implant therapy in severe alveolar bone defect: a case report. Int J Implant Dent 2024; 10:17. [PMID: 38551730 PMCID: PMC10980665 DOI: 10.1186/s40729-024-00535-0] [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: 03/02/2023] [Accepted: 03/18/2024] [Indexed: 04/01/2024] Open
Abstract
This case report provides a detailed description of a simple and fast bone regeneration procedure using a semi-customized three-dimensional ultra-fine titanium mesh. A 50-year-old male with a severe vertical and horizontal bone defect in the anterior mandible underwent implant treatment in a staged approach. The autologous bone was combined with a xenograft, and the mixture was grafted to augment the bone defect and covered with semi-customized ultra-fine titanium meshes, which were selected among its various types according to size and configuration of the bone defect, directly connected and immobilized on the tenting screws with minimal shaping. In a postoperative 6 months re-entry surgery, the performed titanium meshes were removed, implants were placed, and a bone core biopsy was obtained that demonstrated satisfactory new bone formation. Finally, two months later, the definitive prosthesis was installed. This semi-customized ultra-fine titanium mesh could help an implant clinician obtain more predictable results in the guided bone regeneration (GBR).
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Affiliation(s)
- Dae-Ho Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Jong-Hun Jun
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Seo-Hyoung Yun
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Baek-Sun Choi
- Tissue Regeneration Institute, Osstem Implant Co. Ltd., Seoul, Republic of Korea
| | - Joseph P Fiorellini
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Marco Tallarico
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, Sassari, Italy
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea.
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Joung WJ, Yun SH, Kim Y, Cho YS, Lee WW, Seo JW, Tallarico M, Hwang KG, Park CJ. Intra-sinus rigid fixation of a resorbable barrier membrane to repair a large perforation of the sinus membrane: a technical note. J Korean Assoc Oral Maxillofac Surg 2023; 49:297-303. [PMID: 37907346 PMCID: PMC10618659 DOI: 10.5125/jkaoms.2023.49.5.297] [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: 02/17/2023] [Revised: 05/03/2023] [Accepted: 08/21/2023] [Indexed: 11/02/2023] Open
Abstract
A resorbable barrier membrane is commonly used for the repair of perforated sinus membranes during sinus lifting surgeries. However, repairing largescale perforations poses challenges for clinicians as the protection and isolation of graft material remain uncertain. With this technique, we aimed to prevent graft material loss and subsequent sinus-related complications using intra-sinus rigid fixation of the resorbable barrier membrane in cases with a large perforation of the sinus membrane.
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Affiliation(s)
- Won-Jun Joung
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Seo-Hyoung Yun
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Yongjin Kim
- Department of Oral and Maxillofacial Surgery, Woori General Hospital, Pocheon, Korea
| | - Yong-Seok Cho
- Department of Oral and Maxillofacial Surgery, The 22nd Century Seoul Dental Hospital, Incheon, Korea
| | - Won-Woo Lee
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Jin-Won Seo
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Marco Tallarico
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, Sassari, Italy
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
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Jeon SH, Lim SW, Jung KH, Jeon JY, Kim SY, Kim JY, Choi YY, Hwang KG. The clinical effectiveness of fused image of single-photon emission CT and facial CT for the evaluation of degenerative change of mandibular condylar head. Maxillofac Plast Reconstr Surg 2023; 45:33. [PMID: 37755590 PMCID: PMC10533429 DOI: 10.1186/s40902-023-00399-1] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 08/28/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND The primary objective of this study was to assess the clinical effectiveness of fused images obtained from single-photon emission computed tomography (SPECT) and facial computed tomography (CT) for evaluating degenerative changes in the mandibular condylar head. This assessment was accomplished by comparing the Technetium-99 m methylene diphosphonate (99mTc-MDP) uptake ratio with the results of clinical and radiographic findings. METHODS The study included 17 patients (3 males and 14 females) with suspected osteoarthritis of the mandibular condyle, totaling 34 temporomandibular joints (TMJs). Based on clinical and radiographic examinations, the TMJs were categorized into four groups: normal (group N), internal derangement (group ID), osteoarthritis (group OA), and osteoarthritis sequelae (group OAseq). For each patient, bone SPECT and facial CT scans were registered and reconstructed to create fused SPECT/CT images. The 99mTc-MDP uptake levels in the TMJs were statistically compared among the four groups. RESULTS The 99mTc-MDP uptake ratio showed a gradual increase in the order of the following: group N, group OAseq, group ID, and group OA. There was a significant difference observed among groups (p = 0.003), mainly driven by the disparity between group OA and both group N (p < 0.001) and group OAseq (p = 0.048). CONCLUSION Fused SPECT/CT image can be an effective tool for evaluating degenerative changes in the mandibular condylar head. The technique demonstrated the ability to differentiate between normal TMJs and those with internal derangement, osteoarthritis, or osteoarthritis sequelae. This approach holds promise as a valuable method in clinical assessments of TMJ degeneration.
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Affiliation(s)
- Seung-Hwan Jeon
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222-1 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, Korea
| | - Seung-Weon Lim
- Division of Orthodontics, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
- Smart Oral Health Care Research Center, Hanyang University, Seoul, Korea
| | - Ki-Hyun Jung
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222-1 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, Korea
| | - Jae-Yun Jeon
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222-1 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, Korea
| | - Sang-Yoon Kim
- Former Resident, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, USA
- Private Practice, Vienna, VA, Austria
| | - Ji-Young Kim
- Department of Nuclear Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Yoon-Young Choi
- Department of Nuclear Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222-1 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, Korea.
- Smart Oral Health Care Research Center, Hanyang University, Seoul, Korea.
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Kim H, Hong JS, Yun PY, Hwang KG, Kim KS, Lee HJ, Park KU. Exploration of the interplay between spatially distinct microbial habitats through comparative analysis. J Oral Microbiol 2023; 15:2229693. [PMID: 37396300 PMCID: PMC10308874 DOI: 10.1080/20002297.2023.2229693] [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: 04/10/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 07/04/2023] Open
Abstract
Objectives The oral microbiome is closely associated with systemic diseases, indicating the presence of bacteremia and inflammatory mediators in the systemic circulation. Our research aims to investigate the relationship between the oral microbiome and other microbial habitats. Methods We analyzed 180 specimens from 36 patients, including saliva, buccal swab, plaque, stool, and blood samples from a healthy group (Non_PD, n = 18) and a periodontitis group (PD, n = 18). The final analysis included 147 specimens, with varying sample sizes for each group. Metagenomic analysis was performed using prokaryotic 16S rRNA on the MiSeq platform (Illumina). Results PD saliva showed significant richness differences (P's < 0.05), similar to plaque. Buccal swabs had slight variations. Microbial network analysis revealed altered microbial interactions in the PD group, with decreased interactions in saliva and buccal swabs, and increased interactions in plaque. In our analysis of nine specimens where all paired habitat samples could be analyzed, microorganisms linked to oral periodontitis were found in sterile blood samples, resembling the oral cavity's composition. Conclusions Microbiome differences should consider overall microbial-environment interactions, alongside diversity and richness. Our data cautiously suggest that disease-related changes in the salivary microbiome may be reflected in blood specimens through the oral-blood axis.
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Affiliation(s)
- Hyunji Kim
- Department of Laboratory Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jin-Sil Hong
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Pil-Young Yun
- Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Department of Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Keun-Suh Kim
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Hyo-Jung Lee
- Department of Periodontology, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Kyoung Un Park
- Department of Laboratory Medicine, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seoul, Republic of Korea
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Jo S, Jin BJ, Lee SH, Jo HR, Park JM, Hwang KG, Rho M, Kim TH, Cho SH. Eosinophil-derived interferon-γ drives transmembrane protein 119-induced new bone formation in chronic rhinosinusitis with nasal polyps. Int Forum Allergy Rhinol 2023; 13:242-254. [PMID: 35984636 DOI: 10.1002/alr.23076] [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: 05/17/2022] [Revised: 07/17/2022] [Accepted: 08/15/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Chronic rhinosinusitis with nasal polyps (CRSwNP) is a chronic inflammatory sinonasal disease characterized by eosinophilic infiltration and new bone formation. These changes indicate the severity and prognosis of CRSwNP and may be closely linked to each other. METHODS We performed RNA sequencing to screen specific osteogenic molecules and validated transmembrane protein 119 (TMEM119) expression by quantitative polymerase chain reaction (qPCR) and immunohistochemistry analyses. TMEM119 knockdown was performed to observe the downregulation of bone mineralization. We validated the bone-forming activity of interferon-γ (IFN-γ) and its signaling pathways in cultured primary sinus bone cells. Cellular sources of IFN-γ were identified using immunohistochemistry and immunofluorescence analyses. Interleukin-4-eosinophil-IFN-γ axis and the effect of dupilumab were investigated in Eol-1 cells. RESULTS We observed elevated IFN-γ levels and eosinophils in the nasal fluid and predominantly eosinophil-derived IFN-γ in the sinus mucosa of patients with CRSwNP. TMEM119 expression and bone-forming activities were increased in the osteitic and primary sinus bone cells of CRSwNP. IFN-γ treatment enhanced bone mineralization and TMEM119 expression via signal transducer and activator of transcription 1 (STAT1) signaling. Moreover, TMEM119 knockdown inhibited sinus bone cell mineralization and dupilumab attenuated IFN-γ secretion by IL4-stimulated Eol-1 cells. CONCLUSION Eosinophil-derived IFN-γ promotes the bone-forming activities of sinus bone cells via the STAT1-TMEM119 signaling pathway. Interleukin-4-eosinophil-IFN-γ axis may be crucial for TMEM119-mediated new bone formation in CRSwNP.
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Affiliation(s)
- Sungsin Jo
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, Republic of Korea
| | - Bong Joon Jin
- Department of Otorhinolaryngology-Head and Neck Surgery, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Seung Hoon Lee
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, Republic of Korea
| | - Hye-Ryeong Jo
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, Republic of Korea
| | - Joo Mi Park
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, Republic of Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Mina Rho
- Department of Computer Science, Hanyang University, Seoul, Republic of Korea
| | - Tae-Hwan Kim
- Hanyang University Institute for Rheumatology Research (HYIRR), Seoul, Republic of Korea.,Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Republic of Korea
| | - Seok Hyun Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Hanyang University College of Medicine, Seoul, Republic of Korea
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Lim J, Jun SH, Tallarico M, Park JB, Park DH, Hwang KG, Park CJ. A Randomized Controlled Trial of Guided Bone Regeneration for Peri-Implant Dehiscence Defects with Two Anorganic Bovine Bone Materials Covered by Titanium Meshes. Materials (Basel) 2022; 15:ma15155294. [PMID: 35955229 PMCID: PMC9369984 DOI: 10.3390/ma15155294] [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] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/17/2022] [Accepted: 07/21/2022] [Indexed: 12/10/2022]
Abstract
The aim of this study is to compare two low-temperature sintered anorganic bovine bone materials (ABBMs), Bio-Oss (Geistlich, Wolhusen, Switzerland) and A-Oss (Osstem, Seoul, Korea), for GBR in dehiscence defects. A single implant was placed simultaneously with GBR in the buccal or bucco-proximal osseous defect by double-layering of inner allograft and outer ABBM, covered by a preformed ultrafine titanium mesh and an absorbable collagen membrane. Grafted volume changes were evaluated by cone-beam computed tomography, taken preoperatively (T0), immediately after implant surgery (T1), after re-entry surgery (T2), and after delivery of the final restoration (T3). The density of the regenerated bone was assessed by measuring the probing depth on the buccal mid-center of the mesh after removing the mesh at T2. Postoperative sequelae were also recorded. Grafted volume shrinkage of 46.0% (0.78 ± 0.37 cc) and 40.8% (0.79 ± 0.33 cc) in the Bio-Oss group (8 patients) and A-Oss group (8 patients), respectively, was observed at T3 (p < 0.001). There were no significant differences in grafted volume changes according to time periods or bone density between the two groups. Despite postoperative mesh exposure (3 patients), premature removal of these exposed meshes and additional grafting was not necessary, and all implants were functional over the 1-year follow-up period. Both ABBMs with titanium meshes showed no significant difference in the quantity and density of the regenerated bone after GBR for peri-implant defects.
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Affiliation(s)
- JaeHyung Lim
- Department of Oral and Maxillofacial Surgery, Korea University Ansan Hospital, Ansan-si 15355, Korea;
| | - Sang Ho Jun
- Department of Oral and Maxillofacial Surgery, Korea University Anam Hospital, Seoul 02841, Korea;
| | - Marco Tallarico
- Department of Medicine, Surgery, and Pharmacy, University of Sassari, 07100 Sassari, Italy;
| | - Jun-Beom Park
- Department of Periodontics, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Dae-Ho Park
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul 04763, Korea; (D.-H.P.); (K.-G.H.)
| | - Kyung-Gyun Hwang
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul 04763, Korea; (D.-H.P.); (K.-G.H.)
| | - Chang-Joo Park
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul 04763, Korea; (D.-H.P.); (K.-G.H.)
- Correspondence: ; Tel.: +82-2-2290-8646
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Choi H, Cho GJ, Jung KH, Jeon JY, Lim SW, Park CJ, Hwang KG. The dual-port endoscope-assisted cyst enucleation on the maxillofacial region. Maxillofac Plast Reconstr Surg 2021; 43:40. [PMID: 34677708 PMCID: PMC8536808 DOI: 10.1186/s40902-021-00327-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 06/30/2021] [Accepted: 10/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Endoscope-assisted surgery is a surgical method that has been used in oral and maxillofacial surgical fields. It provides good illumination, clear, and magnified visualization of the operative field. The purpose of this article is to describe the early clinical experiences to conduct minimally invasive surgery with endoscope-assisted enucleation of cysts on the jaw. It appears that this approach may be a superior alternative to the conventional approach. METHODS In this study, 24 patients (9 females, 15 males, average age 41.5) underwent endoscope-assisted cyst enucleation under general anesthesia. All operations were done by one surgeon. The cases were classified depending on whether bone penetration occurred at the cyst site. The cystic lesions were enucleated using an endoscope with a 0°, 1.9 mm diameter, or a 30°, 2.7 mm diameter. Two bony windows were used for the insertion of a syringe for irrigation, curettes, suction tips, sinus blades, surgical drills, and an endoscope. An additional small channel was made for the insertion of endoscopic instruments. RESULTS The 24 patients who underwent cyst enucleation were regularly observed for 3 to 12 months to evaluate for complications. Although some patients experienced swelling and numbness, these symptoms did not persist, and the patients soon returned to normal and there was no sign of recurrence. CONCLUSIONS The results of this study have suggested the possibility of minimally invasive surgery with endoscopes when it comes to cyst removal in the oral and maxillofacial region. Nevertheless, this study has limitations designed as a preliminary report focusing on the feasibility of endoscope-assisted cyst enucleation in the oral and maxillofacial regions.
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Affiliation(s)
- Hyuk Choi
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, South Korea
| | - Gyu-Jang Cho
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, South Korea
| | - Ki-Hyun Jung
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, South Korea
| | - Jae-Yun Jeon
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, South Korea
| | - Seung-Weon Lim
- Department of Dentistry/Orthodontics, College of Medicine, Hanyang University, Seoul, South Korea
| | - Chang-Joo Park
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, South Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangshimri-Ro, Seongdong-Ku, Seoul, 04763, South Korea.
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Cho YS, Hwang KG, Jun SH, Tallarico M, Kwon AM, Park CJ. Radiologic comparative analysis between saline and platelet-rich fibrin filling after hydraulic transcrestal sinus lifting without adjunctive bone graft: A randomized controlled trial. Clin Oral Implants Res 2020; 31:1087-1093. [PMID: 32871620 DOI: 10.1111/clr.13655] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 03/17/2020] [Revised: 07/30/2020] [Accepted: 08/13/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To evaluate implant survival rate, any complications, and changes in residual alveolar bone height (RABH) using saline or platelet-rich fibrin (PRF) filling after hydraulic transcrestal sinus lifting. METHODS Dental implants were placed after hydraulic transcrestal sinus lifting and the filling of saline (20 patients) or PRF (20 patients). Outcome measurements were implant survival, any complications, and RABH changes. Cone-beam computed tomography (CBCT) scans were taken and compared preoperatively (T0), immediately postoperatively (T1), at 3 months (T2), 6 months (T3), and 12 months postoperatively (T4), respectively. RESULTS In a total of 40 patients, 45 implants with a mean length of 10.4 ± 0.8 mm were placed in posterior maxilla of a mean RABH of 6.8 ± 1.1 mm. The increase in RABH peaked at T1, and continuous drooping of the sinus membrane was observed but stabilized at T3. Meanwhile, the gradual increase in the radiopacities was found below the lifted sinus membrane. The PRF filling induced the radiographic intrasinus bone gain of 2.6 ± 1.1 mm, which was significantly more than 1.7 ± 1.0 mm of saline filling at T4 (p < .05). All the implants were in function with no significant complications over the one-year follow-up period. CONCLUSIONS In this randomized case-control study, the feasibility of hydraulic transcrestal sinus lifting without bone graft was confirmed and PRF might be a better filler to support the elevated sinus membrane. However, adjunctive bone grafting should still be indicated for cases requiring more than 2-3 mm of intrasinus bone gain.
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Affiliation(s)
- Yong-Seok Cho
- Private Practice, Oral and Maxillofacial Surgery, Apsun Dental Hospital, Seoul, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Sang Ho Jun
- Department of Oral and Maxillofacial Surgery, Korea University Anam Hospital, Seoul, Korea
| | - Marco Tallarico
- Department of Periodontology and Implantology, University of Sassari, Sassari, Italy
| | - Amy M Kwon
- Biostatistics Core, Medicine-Engineering-Bio (MEB) Global Development Research Center, Industry-University Cooperation Foundation, Hanyang University, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
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Hyung S, Jeong J, Shin K, Kim JY, Yim JH, Yu CJ, Jung HS, Hwang KG, Choi D, Hong JW. Exosomes derived from chemically induced human hepatic progenitors inhibit oxidative stress induced cell death. Biotechnol Bioeng 2020; 117:2658-2667. [PMID: 32484909 PMCID: PMC7496643 DOI: 10.1002/bit.27447] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 02/10/2020] [Revised: 05/27/2020] [Accepted: 05/31/2020] [Indexed: 12/15/2022]
Abstract
The emerging field of regenerative medicine has revealed that the exosome contributes to many aspects of development and disease through intercellular communication between donor and recipient cells. However, the biological functions of exosomes secreted from cells have remained largely unexplored. Here, we report that the human hepatic progenitor cells (CdHs)‐derived exosome (EXOhCdHs) plays a crucial role in maintaining cell viability. The inhibition of exosome secretion treatment with GW4869 results in the acceleration of reactive oxygen species (ROS) production, thereby causing a decrease of cell viability. This event provokes inhibition of caspase dependent cell death signaling, leading to a ROS‐dependent cell damage response and thus induces promotion of antioxidant gene expression or repair of cell death of hypoxia‐exposed cells. Together, these findings show the effect of exosomes in regeneration of liver cells, and offer valuable new insights into liver regeneration.
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Affiliation(s)
- Sujin Hyung
- Center for Exosome & Bioparticulate Research, Hanyang University, Gyeonggi-do, Korea
| | - Jaemin Jeong
- HY Indang Center of Regenerative Medicine and Stem Cell Research, Hanyang University, Seoul, Korea.,Department of Surgery, Hanyang University College of Medicine, Seoul, Korea
| | - Kyusoon Shin
- Center for Exosome & Bioparticulate Research, Hanyang University, Gyeonggi-do, Korea.,Department of Bionanotechnology, Graduate School, Hanyang University, Seoul, Korea
| | - Ju Young Kim
- Center for Exosome & Bioparticulate Research, Hanyang University, Gyeonggi-do, Korea.,Department of Bionanotechnology, Graduate School, Hanyang University, Seoul, Korea
| | - Ji-Hye Yim
- HY Indang Center of Regenerative Medicine and Stem Cell Research, Hanyang University, Seoul, Korea.,Department of Surgery, Hanyang University College of Medicine, Seoul, Korea
| | - Chan Jong Yu
- Division of Chemistry and Biochemistry, Kangwon National University, Chuncheon, Korea
| | - Hyun Suk Jung
- Division of Chemistry and Biochemistry, Kangwon National University, Chuncheon, Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral & Maxillofacial Surgery, Collage of Medicine, Hanyang University, Seoul, Korea
| | - Dongho Choi
- HY Indang Center of Regenerative Medicine and Stem Cell Research, Hanyang University, Seoul, Korea.,Department of Surgery, Hanyang University College of Medicine, Seoul, Korea
| | - Jong Wook Hong
- Center for Exosome & Bioparticulate Research, Hanyang University, Gyeonggi-do, Korea.,Department of Bionanotechnology, Graduate School, Hanyang University, Seoul, Korea.,Department of Bionanoengineering, Hanyang University, Gyeonggi-do, Korea.,Department of Medical & Digital Engineering, Hanyang University, Seoul, Korea
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Choi SS, Jang E, Jang K, Jung SJ, Hwang KG, Youn J. Autoantibody-Mediated Dysfunction of Salivary Glands Leads to Xerostomia in SKG Mice. Immune Netw 2019; 19:e44. [PMID: 31921474 PMCID: PMC6943169 DOI: 10.4110/in.2019.19.e44] [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: 10/21/2019] [Revised: 11/29/2019] [Accepted: 12/13/2019] [Indexed: 01/10/2023] Open
Abstract
Sjögren's syndrome (SS) is a chronic heterogeneous disease that mainly affects exocrine glands, leading to sicca syndromes such as xerostomia. Despite the second highest prevalence rate among systemic autoimmune diseases, its pathophysiology remains largely unknown. Here we report that SKG mice, a cardinal model of Th17 cell-mediated arthritis, also develop a secondary form of SS-like disorder upon systemic exposure to purified curdlan, a type of β-glucan. The reduced production of saliva was not caused by focal immune cell infiltrates but was associated with IgG deposits in salivary glands. Sera from curdlan-injected SKG mice contained elevated titers of IgG (predominantly IgG1), autoantibody to the muscarinic type 3 receptor (M3R) and inhibited carbachol-induced Ca2+ signaling in salivary acinar cells. These results suggest that the Th17 cells that are elicited in SKG mice promote the production of salivary gland-specific autoantibodies including anti-M3R IgG; the antibodies are then deposited on acinar cells and inhibit M3R-mediated signaling required for salivation, finally leading to hypofunction of the salivary glands. This type II hypersensitivity reaction may explain the origin of secondary SS occurring without focal leukocyte infiltrates.
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Affiliation(s)
- Suk San Choi
- Laboratory of Autoimmunology, Department of Anatomy and Cell Biology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Eunkyeong Jang
- Laboratory of Autoimmunology, Department of Anatomy and Cell Biology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Kiseok Jang
- Department of Pathology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Sung Jun Jung
- Department of Physiology, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Kyung-Gyun Hwang
- Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University College of Medicine, Seoul 04763, Korea
| | - Jeehee Youn
- Laboratory of Autoimmunology, Department of Anatomy and Cell Biology, Hanyang University College of Medicine, Seoul 04763, Korea
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Cho SH, Jeon JY, Jang KS, Kim SY, Kim KR, Ryu S, Hwang KG. Gender-specific cephalometric features related to obesity in sleep apnea patients: trilogy of soft palate-mandible-hyoid bone. Maxillofac Plast Reconstr Surg 2019; 41:58. [PMID: 31879661 PMCID: PMC6904695 DOI: 10.1186/s40902-019-0242-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 07/17/2019] [Accepted: 11/27/2019] [Indexed: 11/10/2022] Open
Abstract
Background The aim of this study is to investigate the relationship between gender-specific and obesity-related airway anatomy in patients with obstructive sleep apnea (OSA) by using cephalometric analyses. Methods We retrospectively evaluated 206 patients with suspected OSA undergoing polysomnography and anthropometric measurements such as body mass index, neck circumference, and waist-hip ratio. We checked lateral cephalometry to measure tissue landmarks including angle from A point to nasion to B point (ANB), soft palate length (SPL), soft palate thickness (SPT), retropalatal space (RPS), retrolingual space (RLS), and mandibular plane to hyoid (MPH). Results Male with OSA showed significantly increased SPL (P = .006) compared with controls. SPL and MPH had significant correlation with apnea-hypopnea index (AHI) and central obesity. Female with OSA showed significantly increased ANB (P = .013) and SPT (P = .004) compared with controls. The receiver operating characteristic curves revealed that SPT in male and ANB and SPT in female were significant in model 1 (AHI ≥ 5) and model 2 (AHI ≥ 15). MPH was also significant for male in model 2. Conclusion Male and female with OSA had distinct anatomic features of the upper airway and different interactions among soft palate, mandible, and hyoid bone.
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Affiliation(s)
- Seok Hyun Cho
- 1Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Jae-Yun Jeon
- 2Department of Dentistry/Oral and Maxillofacial Surgery, School of Medicine, Hanyang University, 222-1 Wangshimniro, Seongdong-gu, Seoul, 133-792 Korea
| | - Kun-Soo Jang
- 2Department of Dentistry/Oral and Maxillofacial Surgery, School of Medicine, Hanyang University, 222-1 Wangshimniro, Seongdong-gu, Seoul, 133-792 Korea
| | - Sang Yoon Kim
- 3Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,Vienna, USA
| | - Kyung Rae Kim
- 1Department of Otorhinolaryngology-Head and Neck Surgery, School of Medicine, Hanyang University, Seoul, Korea
| | - Seungho Ryu
- 5Department of Occupational Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Kyung-Gyun Hwang
- 2Department of Dentistry/Oral and Maxillofacial Surgery, School of Medicine, Hanyang University, 222-1 Wangshimniro, Seongdong-gu, Seoul, 133-792 Korea
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Son W, Kim KB, Lee S, Hyeon G, Hwang KG, Park W. Ecoflex-Passivated Graphene-Yarn Composite for a Highly Conductive and Stretchable Strain Sensor. J Nanosci Nanotechnol 2019; 19:6690-6695. [PMID: 31027012 DOI: 10.1166/jnn.2019.17097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present a flexible strain sensor based on a graphene-yarn composite obtained by spray coating of graphene nanoplates. To improve the stretchability, graphene nanoplates were spray-coated instead of dip-coated on pre-stretched yarn. The spray-coating method yielded not only 3.68 times higher conductivity but also 2.1 times higher stretchability compared to the dip-coating method. The sensor spray-coated 400 times showed a high stretchability of 310%. Here, the relative resistance change (ΔR/R0) was 2.27 when a tensile strain of 50% was applied to the strain sensor. In addition, the fabricated sensor was coated with a protective layer of Ecoflex to minimize environmental effects. The passivated graphene-yarn composite sensor had a higher resistance than the unpassivated sensor because the Ecoflex film penetrated the conductive graphene nanoplates; however, the response to strains of up to 200% did not degrade after passivation. Furthermore, we demonstrated that our sensor can be used in wearable applications for monitoring individual finger movements and the wrist pulse.
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Affiliation(s)
- Wonkyeong Son
- Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea
| | - Kyu-Beom Kim
- Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea
| | - Sangmin Lee
- Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea
| | - Gibaek Hyeon
- Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul 04763, Korea
| | - Wanjun Park
- Department of Electronics and Computer Engineering, Hanyang University, Seoul 04763, Korea
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Cho HJ, Jeon JY, Ahn SJ, Lee SW, Chung JR, Park CJ, Hwang KG. The preliminary study for three-dimensional alveolar bone morphologic characteristics for alveolar bone restoration. Maxillofac Plast Reconstr Surg 2019; 41:33. [PMID: 31531306 PMCID: PMC6726725 DOI: 10.1186/s40902-019-0216-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 07/15/2019] [Accepted: 07/29/2019] [Indexed: 11/17/2022] Open
Abstract
Background The concept of the ideal morphology for the alveolar bone form is an important element to reconstruct or restore the in maximizing esthetic profile and functional alveolar bone restoration. The purpose of this preliminary study is to evaluate the normal alveolar bone structure to provide the standard reference and guide template for use in diagnosing for implant placement, determining the correct amount of bone augmentation in actual clinical practice and producing prostheses based on three-dimensional imaging assessment of alveolar bone. Methods This study was included 11 men and 11 women (average age, 22.6 and 24.5 years, respectively) selected from among 127 patients. The horizontal widths of alveolar bone of maxilla and mandible were measured at the crestal, mid-root, and root apex level on MDCT (multi-detector computed tomography) images reconstructed by medical imaging software. In addition, tooth dimensions of the central incisors, canines, second premolars, and first molars of maxilla and mandible, including the horizontal width of the interdental alveolar bone crest, were also measured and statistically analyzed. Results The horizontal alveolar bone width of the palatal side of maxilla showed a distinct increment from the alveolar bone crest to the apical region in both anterior and posterior areas. The average widths of the maxillary alveolar ridge were as follows: central incisor, 7.43 mm; canine, 8.91 mm; second premolar, 9.57 mm; and first molar, 12.38 mm. The average widths of the mandibular alveolar ridge were as follows: central incisor, 6.21 mm; canine, 8.55 mm; second premolar, 8.45 mm; and first molar, 10.02 mm. In the buccal side, the alveolar bone width was not increased from the crest to the apical region. The horizontal alveolar bone width of an apical and mandibular border region was thinner than at the mid-root level. Conclusions The results of the preliminary study are useful as a clinical guideline when determining dental implant diameter and position. And also, these measurements can also be useful during the production of prefabricated membranes and customized alveolar bone scaffolds.
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Affiliation(s)
- Hyun-Jae Cho
- 1Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763 South Korea.,2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
| | - Jae-Yun Jeon
- 1Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763 South Korea.,2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
| | - Sung-Jin Ahn
- 2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
| | - Sung-Won Lee
- 2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
| | - Joo-Ryun Chung
- 2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
| | - Chang-Joo Park
- 1Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763 South Korea.,2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
| | - Kyung-Gyun Hwang
- 1Division of Oral & Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763 South Korea.,2Division of Oral & Maxillofacial Surgery, Department of Dentistry, Hanyang University Medical Center, Seoul, South Korea
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Jung KH, Ro SS, Lee SW, Jeon JY, Park CJ, Hwang KG. Correction to: Multiple brain abscesses treated by extraction of the maxillary molars with chronic apical lesion to remove the source of infection. Maxillofac Plast Reconstr Surg 2019; 41:28. [PMID: 31404195 PMCID: PMC6646508 DOI: 10.1186/s40902-019-0213-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 07/16/2019] [Indexed: 11/10/2022] Open
Affiliation(s)
- Ki-Hyun Jung
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763 South Korea
| | - Seong-Su Ro
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763 South Korea
| | - Seong-Won Lee
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763 South Korea
| | - Jae-Yoon Jeon
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763 South Korea
| | - Chang-Joo Park
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763 South Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763 South Korea
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15
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Lee Y, Kim I, Song J, Hwang KG, Choi B, Hwang SS. The relationship between hormone replacement therapy and periodontal disease in postmenopausal women: a cross-sectional study the Korea National Health and Nutrition Examination Survey from 2007 to 2012. BMC Oral Health 2019; 19:151. [PMID: 31307452 PMCID: PMC6631997 DOI: 10.1186/s12903-019-0839-9] [Citation(s) in RCA: 5] [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: 07/26/2018] [Accepted: 07/01/2019] [Indexed: 11/14/2022] Open
Abstract
Background The purpose of this study was to investigate the relationship between hormone replacement therapy (HRT) and periodontal disease in postmenopausal women using data from the 4th and 5th Korea National Health and Nutrition Examination Survey (KNHANES). Methods The study included data from 5,482 postmenopausal women aged 45–74 years in the 2007–2012 KNHANES. The use of female HRT for at least one month was reclassified as HRT+/HRT-. The Community Periodontal Index of Treatment Needs (CPITN) was used to assess periodontal status. Propensity score matching (PSM) was used to control selection bias, and factors affecting education, family income, and age of menopause were used as covariates in PSM. A chi-square test was used to confirm the bivariate relationship between the variables. Binary logistic regression analysis was used to adjust for confounders (age, education, family income, body mass index, age of menopause, alcohol, smoking, dental clinic visits in the past one year, use of oral care products and frequency of tooth brushing per day). Results After adjusting for all covariates, HRT was associated with periodontal disease (OR: 0.79; 95% CI: 0.66–0.94). In particular, the relationship between HRT and periodontal disease was more evident in those with menopause under 45 years of age disease (OR: 0.55; 95% CI: 0.35–0.87). Conclusions The results of this study supported that it is important that hormone therapy be actively considered in the policy towards postmenopausal women. Especially, health programs such as hormone replacement therapy, non-smoking, and use of oral care products are needed for women who undergo premature menopause.
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Affiliation(s)
- Yunhee Lee
- Department of Dental Hygiene, Seoyeong University, 170, Seoyeong-ro, Wollong-myeon, Paju-si, Gyeonggi-do, Republic of Korea
| | - Inah Kim
- Department of Occupational and Environment Medicine, College of Medicine, Hanyang University, 222 wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea.
| | - Jaechul Song
- Department of Occupational and Environment Medicine, College of Medicine, Hanyang University, 222 wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, 222 wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Boyoul Choi
- Department of Preventive Medicine, College of Medicine, Hanyang University, 222 wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Seung-Sik Hwang
- Department of Public Health Sciences, Graduate School of Public Health, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
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16
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Kim C, Hwang KG, Park CJ. Local anesthesia for mandibular third molar extraction. J Dent Anesth Pain Med 2018; 18:287-294. [PMID: 30402548 PMCID: PMC6218392 DOI: 10.17245/jdapm.2018.18.5.287] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 10/10/2018] [Revised: 10/22/2018] [Accepted: 10/29/2018] [Indexed: 11/21/2022] Open
Abstract
Mandibular third molar extraction is commonly performed in dental clinics. However, the optimal method of anesthesia has not been established for this procedure. The conventional inferior alveolar nerve block is the most widely used method. However, its success rate is not high and it may lead to complications, such as aspiration and nerve injury. Therefore, various anesthesia methods are being investigated. Articaine has been proven to be efficacious in a number of studies and is being used with increasing frequency in clinical practice. In this review article, we will briefly review various local anesthesia techniques, anesthetics, and a computer-controlled local anesthetic delivery (CCLAD) system, which reduces pain by controlling the speed of drug injection, for mandibular third molar extraction.
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Affiliation(s)
- Chang Kim
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
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Jung GU, Han JY, Hwang KG, Park CJ, Stathopoulou PG, Fiorellini JP. Effects of Conventional Synthetic Disease-Modifying Antirheumatic Drugs on Response to Periodontal Treatment in Patients with Rheumatoid Arthritis. Biomed Res Int 2018; 2018:1465402. [PMID: 30211216 PMCID: PMC6120284 DOI: 10.1155/2018/1465402] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/25/2018] [Accepted: 08/05/2018] [Indexed: 11/25/2022]
Abstract
Rheumatoid arthritis (RA) and periodontitis are common chronic inflammatory diseases and periodontitis is known to be more common and more severe in patients with RA. Based on a paucity of studies about the relationship between common conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) and periodontitis, this prospective study aimed to evaluate the adjunctive effect of csDMARDs on response to nonsurgical periodontal treatment in patients with RA. Thirty-two patients with RA (RA group) and 32 systemically healthy patients (control group) with periodontitis were included in this study. The RA group patients were treated with csDMARDs, such as methotrexate, hydroxychloroquine, and sulfasalazine. Conventional nonsurgical periodontal treatment with scaling and root planing was performed in both groups. The extent and severity of periodontitis were evaluated by plaque index (PI), gingival index (GI), probing depth (PD), clinical attachment level (CAL), and bleeding on probing (BOP) at baseline and 4 weeks after periodontal treatment. There was no statistically significant difference of periodontal parameters between the RA and control groups at baseline. Four weeks after scaling and root planing, PD reduction, and CAL gain were higher in the RA group treated with csDMARDs compared to the control group, and the difference was statistically significant (P = 0.006 and 0.003, respectively). A post hoc analysis of the RA group showed no statistically significant difference on the response to nonsurgical periodontal treatment in multiple csDMARDs therapy and addition of NSAIDs and/or steroids to csDMARDs. In patients with RA, csDMARDs showed beneficial effect on periodontal clinical parameters following the nonsurgical periodontal treatment.
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Affiliation(s)
- Gyu-Un Jung
- Department of Periodontology, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Ji-Young Han
- Division of Periodontology, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Panagiota G. Stathopoulou
- Department of Periodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Joseph P. Fiorellini
- Department of Periodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
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Chung JR, Choi JW, Fiorellini JP, Hwang KG, Park CJ. Effects of nerve cells and adhesion molecules on nerve conduit for peripheral nerve regeneration. J Dent Anesth Pain Med 2017; 17:191-198. [PMID: 29090249 PMCID: PMC5647825 DOI: 10.17245/jdapm.2017.17.3.191] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 11/15/2022] Open
Abstract
Background For peripheral nerve regeneration, recent attentions have been paid to the nerve conduits made by tissue-engineering technique. Three major elements of tissue-engineering are cells, molecules, and scaffolds. Methods In this study, the attachments of nerve cells, including Schwann cells, on the nerve conduit and the effects of both growth factor and adhesion molecule on these attachments were investigated. Results The attachment of rapidly-proliferating cells, C6 cells and HS683 cells, on nerve conduit was better than that of slowly-proliferating cells, PC12 cells and Schwann cells, however, the treatment of nerve growth factor improved the attachment of slowly-proliferating cells. In addition, the attachment of Schwann cells on nerve conduit coated with fibronectin was as good as that of Schwann cells treated with glial cell line-derived neurotrophic factor (GDNF). Conclusions Growth factor changes nerve cell morphology and affects cell cycle time. And nerve growth factor or fibronectin treatment is indispensable for Schwann cell to be used for implantation in artificial nerve conduits.
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Affiliation(s)
- Joo-Ryun Chung
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Jong-Won Choi
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Joseph P Fiorellini
- Department of Periodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
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An SY, Seo KS, Kim S, Kim J, Lee DW, Hwang KG, Kim HJ. Developmental procedures for the clinical practice guidelines for conscious sedation in dentistry for the Korean Academy of Dental Sciences. J Dent Anesth Pain Med 2016; 16:253-261. [PMID: 28879313 PMCID: PMC5564190 DOI: 10.17245/jdapm.2016.16.4.253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 12/10/2016] [Revised: 12/29/2016] [Accepted: 12/31/2016] [Indexed: 11/15/2022] Open
Abstract
Background Evidence-based clinical practice guidelines (CPGs) are defined as “statements that are scientifically reviewed about evidence and systematically developed to assist in the doctors' and patients' decision making in certain clinical situations.” This recommendation aims to promote good clinical practice for the provision of safe and effective practices of conscious sedation in dentistry. Methods The development of this clinical practice guideline was conducted by performing a systematic search of the literature for evidence-based CPGs. Existing guidelines, relevant systematic reviews, policy documents, legislation, or other recommendations were reviewed and appraised. To supplement this information, key questions were formulated by the Guideline Development Group and used as the basis for designing systematic literature search strategies to identify literature that may address these questions. Guideline documents were evaluated through a review of domestic and international databases for the development of a renewing of existing conscious sedation guidelines for dentistry. Clinical practice guidelines were critically appraised for their methodologies using Appraisal of guidelines for research and evaluation (AGREE) II. Results A total of 12 existing CPGs were included and 13 recommendations were made in a range of general, adult, and pediatric areas. Conclusion The clinical practice guidelines for conscious sedation will be reviewed in 5 years' time for further updates to reflect significant changes in the field.
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Affiliation(s)
- So-Youn An
- Department of Pediatric Dentistry, College of Dentistry, Wonkwang University, Daejeon, Korea
| | - Kwang-Suk Seo
- Department of Dental Anesthesiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
| | - Seungoh Kim
- Department of Dental Anesthesiology, School of Dentistry, Dankook University, Cheonan, Korea
| | - Jongbin Kim
- Department of Pediatric Dentistry, School of Dentistry, Dankook University, Cheonan, Korea
| | - Deok-Won Lee
- Department of Oral and Maxillofacial surgery, Kyung Hee University Dental Hospital at Gangdong, Kyung Hee University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral & Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea
| | - Hyun Jeong Kim
- Department of Dental Anesthesiology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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Park MS, Hwang KG, Choi BY. Correlation between depressive symptoms and subjective mastication ability and ability to pronunciation among Korean elderly. Epidemiol Health 2016; 38:e2016035. [PMID: 27457065 PMCID: PMC5063820 DOI: 10.4178/epih.e2016035] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/25/2016] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES The present study examines the relationship between depressive symptoms and subjective chewing and pronunciation ability in Korean seniors. Our goal is to provide the data required to develop appropriate oral health interventions programs for seniors. METHODS The Center for Epidemiologic Studies-Depression Scale (CES-D) is widely used depressive symptoms assessment. A Korean version was used for the 2009 Community Health Survey, which was consulted to extract the present study's participants comprising 50,694 Korean seniors (males, 20,582; females, 30,112) aged ≥65 years. Those with a CES-D score ≥16 were rated 'depressed.' SAS version 9.3 was used for the data analysis. RESULTS Prevalence of depressive symptoms increased as the participants socioeconomic status decreased, number of health issues increased, health behavior worsened, and chewing and pronunciation discomfort increased. Males with chewing difficulties were found to have 1.45 times (95% confidence interval [CI], 1.29 to 1.63) greater risk of depressive symptoms than those without, while males with pronunciation discomfort were found to have 1.97 times greater risk of depressive symptoms than those without (95% CI, 1.76 to 2.20). Females with chewing difficulty were found to have 1.50 times (95% CI, 1.39 to 1.61) greater risk of depressive symptoms than those without, and females with pronunciation discomfort were found to have 1.55 times greater risk of depressive symptoms than those without (95% CI, 1.44 to 1.67). CONCLUSIONS Intervention programs designed to help with oral health management and alleviate depressive symptoms in seniors are urgently needed. As the prevalence of depressive symptoms may vary geographically, research examining potential variance at city, district, and town levels would be beneficial.
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Affiliation(s)
- Min Sun Park
- Institute for Health and Society, Hanyang University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral and Maxillofacial Surgery, Hanyang University College of Medicine, Seoul, Korea
| | - Bo Youl Choi
- Department of Preventive Medicine, Hanyang University College of Medicine, Seoul, Korea
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Jeon JY, Park CJ, Cho SH, Hwang KG. Bilateral dentigerous cysts that involve all four dental quadrants: a case report and literature review. J Korean Assoc Oral Maxillofac Surg 2016; 42:123-6. [PMID: 27162755 PMCID: PMC4860379 DOI: 10.5125/jkaoms.2016.42.2.123] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 08/11/2015] [Revised: 11/17/2015] [Accepted: 12/01/2015] [Indexed: 11/07/2022] Open
Abstract
Dentigerous cysts are common odontogenic cysts that are associated with the crown of the tooth and typically develop from single lesions. Bilateral and multiple dentigerous cysts are very rare and occur in patients with syndromic conditions. This paper presents a case report of a 15-year-old male patient that experienced non-syndromic bilateral dentigerous cysts that simultaneously occurred in all four dental quadrants around the unerupted third molars. Clinicians should confirm the extent of cystic lesions using a panoramic view and computed tomography, and should keep the possibility of bilateral dentigerous cysts in mind as a potential diagnosis, even in a non-syndromic patient.
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Affiliation(s)
- Jae-Yun Jeon
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Seok Hyun Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Hanyang University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
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An SY, Kim HJ, Kim S, Kim J, Seo KS, Lee DW, Hwang KG. Study on the trends in Korean clinical practice guidelines development. J Dent Anesth Pain Med 2016; 16:31-37. [PMID: 28879293 PMCID: PMC5564116 DOI: 10.17245/jdapm.2016.16.1.31] [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: 12/29/2015] [Revised: 01/28/2016] [Accepted: 03/09/2016] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The definition of evidence-based clinical practice guidelines (CPGs) is "statements that are systematically developed to assist in the doctors' and patients' decision-making in certain situations." This study aims to establish the concept of evidence-based CPGs and investigate the development status to seek measures to apply evidence-based methods to CPG development for dental sedation in Korea. METHODS The study conducted systematic searching methods based on evidence-based CPGs. Articles published between 1995 to 2015 were searched on a Korean database and the international database PubMed. The search was based on keywords related to four subjects (dentistry, clinical practice, guideline, recommendation). Two authors independently reviewed the searched articles to determine their analysis inclusion and the convergence stages, and to arrive at a conclusion through discussion. RESULTS A total of 65 Korean CPGs were included. There were 51 medical guidelines, of which seven were dental and seven were Oriental medicine. CONCLUSIONS As a basic direction for the development of evidence-based CPGs, this work suggests the following: increased awareness; consensus on the need to supply evidence-based development methods; education, computerization, and systematic observation of evidence-based CPG development methods; continuous research development and distribution of CPGs; and creation of a database for Korean clinical dentistry practice outcomes.
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Affiliation(s)
- So-Youn An
- Department of Pediatric dentistry, College of Dentistry, Wonkwang University, Daejeon, Korea
| | - Hyun Jeong Kim
- Department of Dental Anesthesiology, School of Dentistry, Seoul National University, Seoul, Korea
| | - Seungoh Kim
- Department of Dental Anesthesiology, School of Dentistry, Dankook University, Cheonan, Korea
| | - Jongbin Kim
- Department of Pediatric Dentistry, School of Dentistry, Dankook University, Cheonan, Korea
| | - Kwang-Suk Seo
- Department of Dental Anesthesiology, School of Dentistry, Seoul National University, Seoul, Korea
| | - Deok-Won Lee
- Department of Oral and Maxillofacial Surgery, Kyung Hee University Dental Hospital at Gangdong, Kyung Hee University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Department of Dentistry/Oral & Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea
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Jeon JY, Kim TS, Kim SY, Park CJ, Hwang KG. Does the Pharyngeal Airway Recover After Sagittal Split Ramus Osteotomy for Mandibular Prognathism? J Oral Maxillofac Surg 2015; 74:162-9. [PMID: 26071362 DOI: 10.1016/j.joms.2015.05.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 02/16/2015] [Revised: 05/13/2015] [Accepted: 05/19/2015] [Indexed: 12/17/2022]
Abstract
PURPOSE Mandibular setback surgery can adversely affect the pharyngeal airway. The aim of this study was to investigate changes of the pharyngeal airway at specific intervals during a 12-month period after bilateral sagittal split ramus osteotomy (BSSO) for correction of mandibular prognathism. MATERIALS AND METHODS This retrospective cohort study included patients with mandibular prognathism who underwent BSSO. The pharyngeal airway was measured at 3 different levels on lateral cephalograms: the uvula tip, the most inferior-anterior point on the body of the second cervical vertebra (low-C II), and a midanterior point on the body of the third cervical vertebra (mid-C III). The pharyngeal airway was measured preoperatively, immediately postoperatively, and 1, 3, 6, and 12 months postoperatively. The measurements at each level were compared. Multivariable analysis of variance was used to measure the changes in pharyngeal airway space over time. RESULTS The study sample was composed of 30 patients (14 men and 16 women) who were diagnosed with mandibular prognathism. The pharyngeal airway at the uvular tip level was significantly reduced by 39% (P < .001) after surgery and was significantly improved by 26% (P < .01) from baseline at 1 month postoperatively. The pharyngeal airway at the low-C II level was significantly reduced by 27% (P < .001) after surgery and was significantly improved by 24% (P < .01) from baseline at 1 month postoperatively. The pharyngeal airway at the mid-C III level was significantly reduced by 23% (P < .001) after surgery and was improved by only 13% from baseline at 1 month postoperatively. Additional statistical changes were not noted on 3 and 6 months postoperative radiographs at all levels. The pharyngeal airway was decreased by 16, 19, and 8% from baseline at 12 months postoperatively, respectively. The upper airway length was significantly increased immediately after surgery (P < .001), but was incompletely recovered at 12 months postoperatively. CONCLUSION The outcomes of this study indicate that the pharyngeal airway gradually recovers over time. An immediate postoperative reduction in pharyngeal airway space can induce or exacerbate obstructive sleep apnea symptoms; thus, any pre-existing symptoms should be screened and considered for surgical treatment planning.
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Affiliation(s)
- Jae-Yun Jeon
- Clinical Lecturer, Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea
| | - Tae-Sun Kim
- PhD Candidate, Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul; Private Practice, Gimpo, Gyeonggi, Korea
| | - Sang Yoon Kim
- Former Chief Resident, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard Medical School, Boston; Private Practice, Vienna, VA
| | - Chang-Joo Park
- Associate Professor, Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Professor, Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea.
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Kim DK, Choi J, Kim KR, Hwang KG, Ryu S, Cho SH. Rethinking AASM guideline for split-night polysomnography in Asian patients with obstructive sleep apnea. Sleep Breath 2015; 19:1273-7. [DOI: 10.1007/s11325-015-1158-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 02/16/2015] [Accepted: 03/04/2015] [Indexed: 10/23/2022]
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Kang N, Hwang KG, Park CJ. Maxillary Posterior Segmentation Using an Oscillating Saw in Le Fort I Posterior or Superior Movement Without Pterygomaxillary Separation. J Oral Maxillofac Surg 2014; 72:2289-94. [DOI: 10.1016/j.joms.2014.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 04/10/2014] [Accepted: 04/10/2014] [Indexed: 11/24/2022]
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Pace CG, Hwang KG, Papadaki M, Troulis MJ. Interventional Sialoendoscopy for Treatment of Obstructive Sialadenitis. J Oral Maxillofac Surg 2014; 72:2157-66. [DOI: 10.1016/j.joms.2014.06.438] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 05/12/2014] [Accepted: 06/04/2014] [Indexed: 10/25/2022]
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Jung GU, Jeon JY, Hwang KG, Park CJ. Preliminary evaluation of a three-dimensional, customized, and preformed titanium mesh in peri-implant alveolar bone regeneration. J Korean Assoc Oral Maxillofac Surg 2014; 40:181-7. [PMID: 25247148 PMCID: PMC4170664 DOI: 10.5125/jkaoms.2014.40.4.181] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 05/15/2014] [Revised: 07/13/2014] [Accepted: 07/17/2014] [Indexed: 11/16/2022] Open
Abstract
Objectives The purpose of this preliminary study is to evaluate the effectiveness of a customized, three-dimensional, preformed titanium mesh as a barrier membrane for peri-implant alveolar bone regeneration. Materials and Methods Ten patients were recruited for this study. At the time of implant placement, all patients had fenestration or a dehiscence defect around the implant fixture. A mixture of particulate intraoral autologous bone and freeze-dried bone allograft was applied to the defect in a 1 : 1 volume ratio and covered by the preformed titanium mesh. A core biopsy specimen was taken from the regenerated bone four months postoperatively. Patients were followed for 12 months after the definitive prosthesis was placed. Results Satisfactory bone regeneration with limited fibrous tissue was detected beneath the preformed titanium mesh. Histologic findings revealed that newly formed bones were well-incorporated into the allografts and connective tissue. New growth was composed of approximately 80% vital bone, 5% fibrous marrow tissue, and 15% remaining allograft. All implants were functional without any significant complications. Conclusion The use of preformed titanium mesh may support bone regeneration by maintaining space for new bone growth through its macro-pores. This preliminary study presents the efficacy of a preformed titanium mesh as a ready-to-use barrier membrane around peri-implant alveolar bone defect. This preformed mesh is also convenient to apply and to remove.
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Affiliation(s)
- Gyu-Un Jung
- Department of Periodontology, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Jae-Yun Jeon
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea
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Seo MS, Hwang KG, Lee J, Kim H, Baek SH. The effect of mineral trioxide aggregate on odontogenic differentiation in dental pulp stem cells. J Endod 2014; 39:242-8. [PMID: 23321238 DOI: 10.1016/j.joen.2012.11.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/20/2012] [Accepted: 11/06/2012] [Indexed: 01/12/2023]
Abstract
INTRODUCTION This study aimed to identify the early genetic changes related to odontogenic differentiation when mineral trioxide aggregate (MTA) is applied to dental pulp stem cells (DPSCs). METHODS Odontogenic-differentiated cells (induced DPSCs) were obtained by culturing DPSCs in odontoinduction medium for 14 days. Thereafter, MTA in Teflon tubes was applied to the induced DPSCs and uninduced cells. Cells exposed to empty tubes were used as negative controls. The total RNA was extracted from the MTA treated and MTA untreated cells 1 and 3 days after tube application and assessed by microarray analysis. The key results were confirmed selectively by reverse-transcription polymerase chain reaction. We also performed a gene set enrichment analysis. RESULTS In microarray analysis, although the expression levels of 460 genes were changed more than 2-fold in MTA-treated, uninduced DPSCs after 1 day, only 39 genes were altered in MTA-treated, induced DPSCs. In the odontoinduction medium-induced, MTA-treated DPCs, the value of correlation was 0.993 on 1 day and 0.986 on 3 day compared with 0.970 on 1 day and 0.975 on 3 day in the uninduced, MTA-treated DPSCs. Gene set enrichment analysis revealed that MTA significantly up-regulated gene sets involved in cell migration, the response to transforming growth factor β1, and the inflammation pathway in the uninduced DPSCs, whereas in the induced DPSCs it only up-regulated genes involved in cell migration after 1 day. CONCLUSIONS This result shows that MTA stimulates the odontogenic differentiation of DPSCs, and the effects of MTA are drastically increased in uninduced pulp cells compared with odontogenic-differentiated cells.
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Affiliation(s)
- Min-Seock Seo
- Department of Conservative Dentistry, Wonkang University Daejeon Dental Hospital, Daejeon, Republic of Korea
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Seo MS, Hwang KG, Kim H, Baek SH. Analysis of gene expression during odontogenic differentiation of cultured human dental pulp cells. Restor Dent Endod 2013; 37:142-8. [PMID: 23431118 PMCID: PMC3569398 DOI: 10.5395/rde.2012.37.3.142] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 03/16/2012] [Accepted: 04/04/2012] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES We analyzed gene-expression profiles after 14 day odontogenic induction of human dental pulp cells (DPCs) using a DNA microarray and sought candidate genes possibly associated with mineralization. MATERIALS AND METHODS Induced human dental pulp cells were obtained by culturing DPCs in odontogenic induction medium (OM) for 14 day. Cells exposed to normal culture medium were used as controls. Total RNA was extracted from cells and analyzed by microarray analysis and the key results were confirmed selectively by reverse-transcriptase polymerase chain reaction (RT-PCR). We also performed a gene set enrichment analysis (GSEA) of the microarray data. RESULTS Six hundred and five genes among the 47,320 probes on the BeadChip differed by a factor of more than two-fold in the induced cells. Of these, 217 genes were upregulated, and 388 were down-regulated. GSEA revealed that in the induced cells, genes implicated in Apoptosis and Signaling by wingless MMTV integration (Wnt) were significantly upregulated. CONCLUSIONS Genes implicated in Apoptosis and Signaling by Wnt are highly connected to the differentiation of dental pulp cells into odontoblast.
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Affiliation(s)
- Min-Seock Seo
- Department of Dentistry, Hanyang University College of Medicine, Seoul, Korea. ; Department of Conservative Dentistry, Seoul National University School of Dentistry, Seoul, Korea
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Abstract
AIM Bone harvesting from the anterior nasal spine (ANS) is frequently used to correct peri-implant bone defects, particularly during implant placement in the anterior maxilla. However, many clinicians are concerned about the postoperative effect of removing the ANS on the nasal outline, as the ANS is integral to supporting the nose. This study aimed to describe the technique of ANS bone grafting and to investigate postoperative effects of bone harvesting from the ANS on the overall nasal shape. MATERIAL AND METHODS Fifteen patients with single maxillary first incisal rehabilitation using dental implant were enrolled in this prospective clinical study. Simply by extending the subperiosteal dissection in the same surgical field without additional local anesthesia, a bone block of about 0.25-0.5 ml could be harvested from the ANS. Nose width (NW), nasolabial angle (NLA), and nasal tip depth (NTD) were measured and analyzed by lateral and frontal photographs taken preoperatively (T0), and at postoperative 1 week (T1), 3 months (T2), and 6 months (T3). Postoperative complications were also recorded. RESULTS A significant increase in NW and decrease in both NLA and NTD were found at T1 (P < 0.05). At T3, NW, NLA and NTD returned to preoperative measurements at T0 without major complications. CONCLUSIONS The ANS could be an effective and easily accessible intraoral source for autologous bone. Despite acute soft tissue swelling, the net postoperative effects of removing the ANS on the overall nasal shape, including on nasal tip collapse or widening of the nose base, were negligible.
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Affiliation(s)
- Yong-Seok Cho
- Oral and Maxillofacial Surgery, Apsun Dental Hospital, Seoul, South Korea
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Jeon SH, Cho YS, Lee BH, Im TY, Hwang KG, Park CJ. Evaluation of the feasibility of bony window repositioning without using a barrier membrane in sinus lateral approach. J Korean Assoc Oral Maxillofac Surg 2011. [DOI: 10.5125/jkaoms.2011.37.2.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Seung-Hwan Jeon
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Yong-Seok Cho
- Private Practice of Oral and Maxillofacial Surgery, Apsun Dental Hospital, Seoul, Korea
| | - Byung-Ha Lee
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Tae-Yun Im
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, Korea
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Cho SH, Kim TH, Kim KR, Lee JM, Lee DK, Kim JH, Im JJ, Park CJ, Hwang KG. Factors for maxillary sinus volume and craniofacial anatomical features in adults with chronic rhinosinusitis. ACTA ACUST UNITED AC 2010; 136:610-5. [PMID: 20566913 DOI: 10.1001/archoto.2010.75] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
OBJECTIVES To compare the volume of the maxillary sinus, dental factors, and craniofacial anatomical features between control subjects and patients with chronic rhinosinusitis (CRS) and to investigate critical factors for the volumetric change in the maxillary sinus in adults. DESIGN Retrospective case-control study. SETTING Tertiary referral center. PARTICIPANTS Ninety-nine individuals who visited an allergy and sinus center: 52 control subjects (septal deviation; mean age, 32.69 years) and 47 patients with CRS (mean age, 44.43 years). INTERVENTION Cephalometry and computed tomography were performed in all the participants. In blinded tests, dentists investigated the dental status of both groups. MAIN OUTCOME MEASURES Maxillary sinus: bone thickness and volume on computed tomography; craniofacial anatomical features: linear and angular variables in lateral cephalometry; and dental evaluation: malocclusion class, teeth status, and alveolar bone height. RESULTS Bony wall thickness of the maxillary sinus significantly increased in patients with CRS (P < .001) but showed no relationship with maxillary sinus volume. Maxillary sinus volume significantly decreased in patients with CRS (P = .001). Age and alveolar bone height had a negative effect on maxillary sinus volume in both groups. Abnormal teeth had no relationship with maxillary sinus volume in both groups but showed a negative effect on alveolar bone height in the CRS group (P = .02). Class II malocclusion associated with anterior movement of the maxilla significantly increased in the CRS group (P = .006). CONCLUSIONS Regardless of CRS, maxillary sinus volume decreased with older age and increased with alveolar bone loss. Regarding craniofacial anatomical features, CRS may have an effect on malocclusion in adults.
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Affiliation(s)
- Seok Hyun Cho
- DDS, Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-792, South Korea
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Abstract
This report presents the case of a 20-year-old female patient exhibiting an infraoccluded ankylosed maxillary central incisor that was avulsed and replanted after traumatic injury during childhood. To reposition the osseous and gingival margins of the ankylosed tooth to an ideal level, a new alveolar distraction device that uses anchoring miniscrews with a single tooth dento-osseous osteotomy was fabricated and the ankylosed tooth was successfully treated with exceptional patient compliance.
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Affiliation(s)
- Jae-Jung Im
- Division of Orthodontics/Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
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Im TY, Hwang KG, Park CJ, Kim KS, Oh Y, Han JY, Shim KS. Randomized, Double-blind, Comparative Clinical Trial on the Efficacy of 4% Articaine and 2% Lidocaine in Inferior Alveolar Nerve Block Anesthesia. ACTA ACUST UNITED AC 2010. [DOI: 10.17245/jkdsa.2010.10.1.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Tae-Yun Im
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
| | - Kyung-Gyun Hwang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
| | - Chang-Joo Park
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
| | - Kwang-Soo Kim
- Division of Preventive Dentistry, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
| | - Young Oh
- Division of Conservative Dentistry, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
| | - Ji-Young Han
- Division of Periodontology, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
| | - Kwang-Sup Shim
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, College of Medicine, Hanyang University, Seoul, South Korea
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Hwang KG, Shim KS, Yang SM, Park CJ. Partial-Thickness Cortical Bone Graft From the Mandibular Ramus: A Non-Invasive Harvesting Technique. J Periodontol 2008; 79:941-4. [DOI: 10.1902/jop.2008.070408] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Chung IH, Yoo CK, Lee EK, Ihm JA, Park CJ, Lim JS, Hwang KG. Postoperative stability after sagittal split ramus osteotomies for a mandibular setback with monocortical plate fixation or bicortical screw fixation. J Oral Maxillofac Surg 2008; 66:446-52. [PMID: 18280376 DOI: 10.1016/j.joms.2007.06.643] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2006] [Revised: 04/10/2007] [Accepted: 06/07/2007] [Indexed: 10/22/2022]
Abstract
PURPOSE This comparative study was performed to analyze mandibular stability after bilateral sagittal split ramus osteotomies for a mandibular setback with a monocortical plate fixation or bicortical screw fixation. PATIENTS AND METHODS A total of 60 patients with a skeletal Class III malocclusion who underwent sagittal split osteotomies and mandibular setback were included in the present study. Among the patients, 30 were osteosynthesized monocortically with a titanium plate, while the other 30 were osteosynthesized bicortically with positioning screws. This retrospective study used cephalometric radiographs taken preoperatively (T0), and at 1 week (T1), 3 months (T2), and 1 year (T3) postoperatively. The linear and angular changes of the cephalometric landmarks of the chin region were measured at each time period, and the changes of each cephalometric landmark were determined for 4 different time intervals: T0 to T1 (Delta T1), T1 to T2 (Delta T2), T2 to T3 (Delta T3), and T0 to T3 (Delta T4). Postoperative changes in mandibular shape were analyzed using a paired t test to determine the stability of fixation methods. RESULTS The surgical changes (Delta T1) could be characterized as posterior movements of the mandibular body and posterosuperior movements of the chin landmark. The results of the cephalometric analysis at 3 and 12 months postsurgery (Delta T2 and Delta T3) could be characterized as anterosuperior movements of the mandible. In both treatment groups, surgical changes were relatively well maintained. Likewise, analysis of the horizontal and vertical movements of the chin landmarks indicated a similar tendency in both groups. There were no statistically significant differences between the measurements of postoperative changes at each time period after surgery. CONCLUSIONS The findings of our study suggest that there were no significant differences in postoperative changes in mandibular shape in both the monocortical and bicortical fixation groups after sagittal split ramus osteotomy. We concluded that monocortical osteosynthesis using a miniplate could be used to obtain stable postoperative changes after mandibular setback.
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Affiliation(s)
- Il-Hyuk Chung
- Department of Dentistry/Oral and Maxillofacial Surgery, Seoul National University Boramae Hospital, Seoul, Korea
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Hwang KG, Park CJ. Ideal implant positioning in an anterior maxillary extraction socket by creating an apico-palatal guiding slot: a technical note. Int J Oral Maxillofac Implants 2008; 23:121-122. [PMID: 18416421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Abstract
In anterior maxillary extraction sockets, immediate implants are usually positioned along the palatal slope of the extraction socket. However, this positioning frequently causes unintentional slipping of dental implant toward thin labial plate, leading to its fracture or perforation. To prevent this, the present authors have created a simple apico-palatal guiding slot in the extraction socket following atraumatic extraction. Guided by this slot, sequential drilling up to implant placement can be easily accomplished while maintaining ideal axial orientation of the dental implant.
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Affiliation(s)
- Kyung-Gyun Hwang
- Department of Dentistry/Oral & Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea.
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Hwang KG, Park CJ, Paik SS, Shim KS. Gingival metastasis from gastric adenocarcinoma. Otolaryngol Head Neck Surg 2007; 137:169-70. [PMID: 17599589 DOI: 10.1016/j.otohns.2007.01.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2006] [Accepted: 01/11/2007] [Indexed: 11/21/2022]
Affiliation(s)
- Kyung-Gyun Hwang
- Department of Dentistry/Oral and Maxillofacial Surgery, College of Medicine, Hanyang University, Seoul, Korea.
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Choi JY, Hwang KG, Baek SH, Lee JH, Kim TW, Kim MJ, Chang YI. Original sagittal split osteotomy revisited for mandibular distraction. J Craniomaxillofac Surg 2001; 29:165-73. [PMID: 11465256 DOI: 10.1054/jcms.2001.0211] [Citation(s) in RCA: 21] [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] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION A malformed mandible and an abnormally positioned mandibular foramen make it difficult to plan an ideal osteotomy line for mandibular distraction. In addition, there have been reports of such complications as nonunion, damage and stretch injury of the inferior alveolar nerve and tooth germ damage when conventional osteotomy or corticotomy are used for mandibular distraction. The authors utilized the original sagittal split ramus osteotomy for mandibular distraction. PATIENTS AND METHODS Five patients (three unilateral hemifacial microsomia, one bilateral hemifacial microsomia, and one mandibular retrusion) were included in this study of distraction osteogenesis using the sagittal split ramus osteotomy. Extraoral distraction devices were applied to the first four patients. An intraoral device with mono-cortical screw fixation was used for the fifth patient. RESULT In all five cases, the results of the distraction were satisfactory. Complications (as listed) of conventional osteotomy when used for distraction were avoided. Satisfactory results were achieved and these were also well maintained postoperatively (mean follow up: 36 months). CONCLUSION The authors believe that sagittal osteotomy for mandibular distraction osteogenesis makes it possible, to avoid injury to the inferior alveolar nerve during operation and stretching injury during distraction and to prevent tooth germ injury. It is also possible to diversify the osteotomy line for various force vectors to enlarge the bony contact surface area. Therefore, we suggest that sagittal split ramus osteotomy should be used as a preferred modification of osteotomy for mandibular distraction.
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Affiliation(s)
- J Y Choi
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Seoul National University, Korea
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