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Zhang M, Zhang P, Koh JT, Oh MH, Cho JH. Evaluation of Aligners and Root Resorption: An Overview of Systematic Reviews. J Clin Med 2024; 13:1950. [PMID: 38610714 PMCID: PMC11012294 DOI: 10.3390/jcm13071950] [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: 02/22/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Background: To evaluate the current evidence on clear aligners and root resorption using 3D and/or combined 2D and 3D methods from available systematic reviews and meta-analyses and to determine the relationship between root resorption and clear aligners using the AMSTAR 2 tool. Methods: A comprehensive literature search of systematic reviews investigating aligners and root resorption, published up until 31 December 2022, was conducted. The following electronic databases were searched: MEDLINE via PubMed, EMBASE, Google Scholar, Science Direct, Web of Science, Scopus, LIVIVO, and LILACS. There were no language restrictions. The inclusion criteria were restricted to studies focusing on root resorption utilizing either 3D methods exclusively or a combination of 2D and 3D techniques. Data were screened and analyzed for quality using the "A Measurement Tool to Assess Systematic Reviews (AMSTAR 2)" tool. Data extraction was conducted independently by two authors. The gathered information was categorized and synthesized narratively based on the primary findings elucidated within the reviews. Results: Out of a total of 1221 potentially eligible studies initially identified, 4 systematic reviews met the inclusion criteria following the exclusion of irrelevant studies. Among these, two systematic reviews (50%) were classified as low-quality, while the remaining two (50%) were deemed to be of critically low quality. Conclusions: Based on the findings of four systematic reviews, the root resorption rate was lower with the use of clear aligners than with fixed aligners. It is advisable to approach the interpretation of this conclusion with caution, as the quality of the available evidence is assessed to be very low. Higher quality systematic reviews are needed to substantiate this conclusion.
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Affiliation(s)
- Meiling Zhang
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Peng Zhang
- Department of Prosthodontics, School of Dentistry, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Jeong-Tae Koh
- Department of Pharmacology and Dental Therapeutics, Hard-Tissue Biointerface Research Center, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju 61186, Republic of Korea;
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Kim YH, Kim I, Kim YJ, Kim M, Cho JH, Hong M, Kang KH, Lim SH, Kim SJ, Kim N, Shin JW, Sung SJ, Baek SH, Chae HS. Author Correction: The prediction of sagittal chin point relapse following two-jaw surgery using machine learning. Sci Rep 2024; 14:2800. [PMID: 38307887 PMCID: PMC10837112 DOI: 10.1038/s41598-024-53035-x] [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: 02/04/2024] Open
Affiliation(s)
- Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea
| | - Inhwan Kim
- Department of Convergence Medicine, Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Woman's University, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Namkug Kim
- Department of Convergence Medicine, Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, Korea
| | - Jeong Won Shin
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea
| | - Sang-Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Hwa Sung Chae
- Department of Orthodontics, Gwangmyeong Hospital, Chungang University, Gwangmyeong, Korea.
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Han SH, Lim J, Kim JS, Cho JH, Hong M, Kim M, Kim SJ, Kim YJ, Kim YH, Lim SH, Sung SJ, Kang KH, Baek SH, Choi SK, Kim N. Accuracy of posteroanterior cephalogram landmarks and measurements identification using a cascaded convolutional neural network algorithm: A multicenter study. Korean J Orthod 2024; 54:48-58. [PMID: 38072448 PMCID: PMC10811357 DOI: 10.4041/kjod23.075] [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: 03/31/2023] [Revised: 09/07/2023] [Accepted: 10/10/2023] [Indexed: 01/26/2024] Open
Abstract
Objective : To quantify the effects of midline-related landmark identification on midline deviation measurements in posteroanterior (PA) cephalograms using a cascaded convolutional neural network (CNN). Methods : A total of 2,903 PA cephalogram images obtained from 9 university hospitals were divided into training, internal validation, and test sets (n = 2,150, 376, and 377). As the gold standard, 2 orthodontic professors marked the bilateral landmarks, including the frontozygomatic suture point and latero-orbitale (LO), and the midline landmarks, including the crista galli, anterior nasal spine (ANS), upper dental midpoint (UDM), lower dental midpoint (LDM), and menton (Me). For the test, Examiner-1 and Examiner-2 (3-year and 1-year orthodontic residents) and the Cascaded-CNN models marked the landmarks. After point-to-point errors of landmark identification, the successful detection rate (SDR) and distance and direction of the midline landmark deviation from the midsagittal line (ANS-mid, UDM-mid, LDM-mid, and Me-mid) were measured, and statistical analysis was performed. Results : The cascaded-CNN algorithm showed a clinically acceptable level of point-to-point error (1.26 mm vs. 1.57 mm in Examiner-1 and 1.75 mm in Examiner-2). The average SDR within the 2 mm range was 83.2%, with high accuracy at the LO (right, 96.9%; left, 97.1%), and UDM (96.9%). The absolute measurement errors were less than 1 mm for ANS-mid, UDM-mid, and LDM-mid compared with the gold standard. Conclusions : The cascaded-CNN model may be considered an effective tool for the auto-identification of midline landmarks and quantification of midline deviation in PA cephalograms of adult patients, regardless of variations in the image acquisition method.
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Affiliation(s)
- Sung-Hoon Han
- Department of Orthodontics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jisup Lim
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jun-Sik Kim
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Sang Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Sung-Kwon Choi
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Namkug Kim
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Kim IH, Kim JS, Jeong J, Park JW, Park K, Cho JH, Hong M, Kang KH, Kim M, Kim SJ, Kim YJ, Sung SJ, Kim YH, Lim SH, Baek SH, Kim N. Orthognathic surgical planning using graph CNN with dual embedding module: External validations with multi-hospital datasets. Comput Methods Programs Biomed 2023; 242:107853. [PMID: 37857025 DOI: 10.1016/j.cmpb.2023.107853] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 09/30/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023]
Abstract
BACKGROUND AND OBJECTIVE Despite recent development of AI, prediction of the surgical movement in the maxilla and mandible by OGS might be more difficult than that of tooth movement by orthodontic treatment. To evaluate the prediction accuracy of the surgical movement using pairs of pre-(T0) and post-surgical (T1) lateral cephalograms (lat-ceph) of orthognathic surgery (OGS) patients and dual embedding module-graph convolution neural network (DEM-GCNN) model. METHODS 599 pairs from 3 institutions were used as training, internal validation, and internal test sets and 201 pairs from other 6 institutions were used as external test set. DEM-GCNN model (IEM, learning the lat-ceph images; LTEM, learning the landmarks) was developed to predict the amount and direction of surgical movement of ANS and PNS in the maxilla and B-point and Md1crown in the mandible. The distance between T1 landmark coordinates actually moved by OGS (ground truth) and predicted by DEM-GCNN model and pre-existed CNN-based Model-C (learning the lat-ceph images) was compared. RESULTS In both internal and external tests, DEM-GCNN did not exhibit significant difference from ground truth in all landmarks (ANS, PNS, B-point, Md1crown, all P > 0.05). When the accumulated successful detection rate for each landmark was compared, DEM-GCNN showed higher values than Model-C in both the internal and external tests. In violin plots exhibiting the error distribution of the prediction results, both internal and external tests showed that DEM-GCNN had significant performance improvement in PNS, ANS, B-point, Md1crown than Model-C. DEM-GCNN showed significantly lower prediction error values than Model-C (one-jaw surgery, B-point, Md1crown, all P < 0.005; two-jaw surgery, PNS, ANS, all P < 0.05; B point, Md1crown, all P < 0.005). CONCLUSION We developed a robust OGS planning model with maximized generalizability despite diverse qualities of lat-cephs from 9 institutions.
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Affiliation(s)
- In-Hwan Kim
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jun-Sik Kim
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jiheon Jeong
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jae-Woo Park
- Department of Convergence Medicine, University of Ulsan, College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - Kanggil Park
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, South Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan-si, South Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, South Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Sang-Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon-si, Gyeonggi-do, South Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, South Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Daehak-ro 101, Jongno-gu, Seoul 03080, South Korea
| | - Namkug Kim
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Kim YH, Kim I, Kim YJ, Kim M, Cho JH, Hong M, Kang KH, Lim SH, Kim SJ, Kim N, Shin JW, Sung SJ, Baek SH, Chae HS. The prediction of sagittal chin point relapse following two-jaw surgery using machine learning. Sci Rep 2023; 13:17005. [PMID: 37813915 PMCID: PMC10562368 DOI: 10.1038/s41598-023-44207-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 10/04/2023] [Indexed: 10/11/2023] Open
Abstract
The study aimed to identify critical factors associated with the surgical stability of pogonion (Pog) by applying machine learning (ML) to predict relapse following two-jaw orthognathic surgery (2 J-OGJ). The sample set comprised 227 patients (110 males and 117 females, 207 training and 20 test sets). Using lateral cephalograms taken at the initial evaluation (T0), pretreatment (T1), after (T2) 2 J-OGS, and post treatment (T3), 55 linear and angular skeletal and dental surgical movements (T2-T1) were measured. Six ML modes were utilized, including classification and regression trees (CART), conditional inference tree (CTREE), and random forest (RF). The training samples were classified into three groups; highly significant (HS) (≥ 4), significant (S) (≥ 2 and < 4), and insignificant (N), depending on Pog relapse. RF indicated that the most important variable that affected relapse rank prediction was ramus inclination (RI), CTREE and CART revealed that a clockwise rotation of more than 3.7 and 1.8 degrees of RI was a risk factor for HS and S groups, respectively. RF, CTREE, and CART were practical tools for predicting surgical stability. More than 1.8 degrees of CW rotation of the ramus during surgery would lead to significant Pog relapse.
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Affiliation(s)
- Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea
| | - Inhwan Kim
- Department of Convergence Medicine, Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Woman's University, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Namkug Kim
- Department of Convergence Medicine, Asan Medical Center, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul, Korea
| | - Jeong Won Shin
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea
| | - Sang-Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, South Korea
| | - Hwa Sung Chae
- Department of Orthodontics, Gwangmyeong Hospital, Chungang University, Gwangmyeong, Korea.
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Choi SH, Lee JG, Cho JH. The Role of Local Prostate and Metastasis-Directed Radiotherapy in the Treatment of Oligometastatic Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e373. [PMID: 37785271 DOI: 10.1016/j.ijrobp.2023.06.2476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The local ablative therapy for oligometastatic disease (OMD) has the potential to delay further metastases and improve survival. However, it has not been fully elucidated how prostate primary radiotherapy (PPR) and metastasis-directed radiotherapy (MDR) affect prognosis in each different OMD scenario. Herein, we tried to provide efficacy and future perspectives for MDR in oligometastatic prostate cancer. MATERIALS/METHODS Patients diagnosed with prostate cancer between 2010 and 2019 and treated for OMD (≤5 active lesions), which occurred synchronously or metachronously, were included. All patients received MDR at all detected lesions (OMDRT). OMDRT which was performed as soon as OMD was detected was classified as early, and OMDRT for progressions after hormone therapy was classified as late. The primary endpoint was survival after OMDRT, and timing of progression after RT was also analyzed. RESULTS A total of 82 patients with oligometastatic prostate cancer received OMDRT. Among 36 patients with synchronous OMD, 58% received PPR at diagnosis, and 64% received early OMDRT. Among 46 patients with metachronous OMD, 80% received early OMDRT, and 28 received sequential OMDRT for repetitive OMD events. With a median follow-up of 32 months after OMDRT, 54 patients experienced progression and 5-year survival was 78%. Survival was highest in patients with synchronous OMD and early RT (5-year 86%), and 5-year survival of patients with metachronous OMD and early RT was significantly higher than those with late RT (78% vs. 44%, p = 0.003). Survival of patients with synchronous OMD and PPR was significantly higher than those without PPR or with metachronous OMD (5-year 90% vs. 66%, p = 0.030), by delaying progressions (17.9 vs. 7.0 months, p = 0.005). CONCLUSION Survival gain could be achieved through OMDRT in oligometastatic prostate cancer, especially in synchronous OMD status. Also, it was possible to improve the prognosis further when OMDRT was performed early and with PPR.
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Affiliation(s)
- S H Choi
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J G Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Cho
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Choi H, Lee JG, Kim J, Byun HK, Kim KH, Koom WS, Cho JH, Lee IJ. Mapping the Anatomical Distribution of MRI-Identified Locoregional Recurrence following Robotic-Assisted Laparoscopic Prostatectomy for Prostate Adenocarcinoma. Int J Radiat Oncol Biol Phys 2023; 117:e373. [PMID: 37785270 DOI: 10.1016/j.ijrobp.2023.06.2475] [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] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The pattern of locoregional recurrence specifically after robotic-assisted laparoscopic prostatectomy (RALP) for prostate adenocarcinoma is still unknown. In this study, we reviewed pelvic magnetic resonance images (MRI) after postoperative biochemical recurrence (BCR) and drew a map of locoregional recurrence to support evidence of determining the optimal target volume of salvage radiotherapy in a post-RALP BCR scenario. MATERIALS/METHODS We have retrospectively searched 7,583 prostate adenocarcinoma patients who have received RALP in our institution between January 2010 and December 2021, and found a pool of highly selected patients with gross tumor recurrence confirmed by post-BCR pelvic MRIs and did not have other histories of malignancy. BCR was defined as the serum PSA more or equal to 0.2 ng/mL, or three consecutive increases. Patients with serum PSA nadir more or equal to 0.2 ng/mL on the 90th postoperative day (POD 90) were excluded to guarantee successful tumor removal. We have reviewed serum PSA levels using R codes, MRI and pathological reports using Excel, and descriptive statistics using SPSS 25. The gross lesions were contoured on the correlating MRIs using MIM Maestro 7.1. The RT structure DICOM files were merged into a map using MATLAB 2022b. In addition, we have conducted Fisher exacted test, Mann-Whitney U test, and logistic regression to identify risk factors for regional recurrence. RESULTS A total of 173 patients were identified with locoregional recurrence from post-BCR pelvic MRIs, and 139 (80.3%) patients were in the high-risk group or very-high-risk group according to the NCCN guidelines: 57 (32.9%) patients with histological grade group 5, 50 (28.9%) patients with initial PSA over 20 ng/mL, 114 (65.9%) patients with extracapsular extension, 55 (31.8%) patients with seminal vesicle invasion, and 15 (9%) patients with pN1. The median follow-up was 4.7 (IQR 2.8-6.9) years for pelvic MRIs and 5.8 (IQR 4.0-8.6) years for serum PSA. The BCF survival was median of 10.7 (IQR 4.6-19.1) months, and the locoregional recurrence-free survival was median of 24.6 (IQR 9.7-49.4) months for this subgroup of patients. At first locoregional recurrence, 148 (85.5%) patients were local only, 20 (11.6%) patients were regional only, and 5 (2.9%) patients were both local and regional. Out of the 25 patients with regional recurrence, the incidence of gross tumor recurrence differed by nodal sites: 3 (12%) in perirectal space, 5 (20%) in internal iliac, 7 (28%) in obturator, 13 (52%) in external iliac, and 6 (24%) in common iliac lymph nodes. CONCLUSION We have found 173 patients and were able to map reliable gross tumor recurrence sites after RALP and confirmed by pelvic MRIs following BCR. The map supports evidence of using the existing consensus pelvic clinical target volume of salvage radiotherapy, in a post-RALP BCR scenario.
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Affiliation(s)
- H Choi
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J G Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H K Byun
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K H Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - W S Koom
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Cho
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Lee HI, Kim J, Kim IA, Lee JH, Cho JH, Yoon HI, Wee CW. Choosing Wisely between Radiotherapy Dose-Fractionation Schedules: The Molecular Graded Prognostic Assessment (molGPA) for Elderly Glioblastoma (eGBM-molGPA). Int J Radiat Oncol Biol Phys 2023; 117:e125-e126. [PMID: 37784678 DOI: 10.1016/j.ijrobp.2023.06.919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aimed to develop a graded prognostic assessment (GPA) model integrating genomic characteristics in patients with elderly glioblastoma (eGBM), and compare the efficacy between conventionally fractionated radiotherapy (CFRT) vs. hypofractionated radiotherapy (HFRT) in each risk group. MATERIALS/METHODS Patients aged ≥65 years who underwent surgical resection followed by radiotherapy (RT) with or without temozolomide (TMZ) for newly diagnosed IDH-wildtype eGBM between 2006 and 2021 were included in this multicenter cohort study. Patients who were planned for a ≥6-week or ≤4-week radiotherapy were regarded as being treated with CFRT or HFRT, respectively. Based on the prognostic factors significantly identified through multivariate analysis for overall survival (OS), we developed the molecular GPA for eGBM (eGBM-molGPA) and assigned 0.0, 0.5, and 1.0 points in proportion to the corresponding hazard ratio (HR) of each factor. Then, the survival outcomes by treatment groups were evaluated according to the eGBM-molGPA scores. RESULTS A total of 334 and 239 patients who underwent CFRT and HFRT were included, respectively, and 86% of patients were treated with TMZ-based chemoradiation. With a median follow-up of 17.4 months for survivors, the median OS was 18.7 months for CFRT plus TMZ group, 15.1 months for HFRT plus TMZ group, and 10.4 months for RT alone group, respectively (all p<0.001). In the multivariate analysis, Karnofsky performance scale, surgical extent, TMZ, and the methylation status of the MGMT promoter were identified as strong prognostic factors for OS, with an estimated HR of greater than 1.5 (all p<0.001). Additionally, subventricular zone involvement, temporalis muscle thickness, RT regimen, and the mutation status of TERT promoter and TP53 gene were found to be significant prognostic factors for OS, with an estimated HR of less than 1.5. The eGBM-molGPA was established based on these prognostic factors (Table 1) and patients were allocated to three risk groups, which included high risk (total score of 3.0-4.5), intermediate risk (1.5-2.5), and low risk (0.0-1.0). Patients treated with CFRT plus TMZ had significantly improved OS compared to those treated with HFRT plus TMZ or RT alone in the low and intermediate risk groups (p<0.001). However, in the high-risk group, there was no significant difference in OS between treatment options (p = 0.770). CONCLUSION CFRT plus TMZ can be a more effective strategy for selected eGBM patients compared to HFRT. For high-risk patients, a protracted treatment schedule might not be beneficial. The novel eGBM-molGPA can be used as a clinical tool for choosing wisely among treatment options. Further prospective studies are warranted to establish optimal RT guidelines for eGBM patients.
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Affiliation(s)
- H I Lee
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I A Kim
- Department of Radiation Oncology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea, Republic of (South) Korea
| | - J H Lee
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Cho
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H I Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - C W Wee
- Department of Radiation Oncology, SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
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9
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Zheng Y, Aljawad H, Kim MS, Choi SH, Kim MS, Oh MH, Cho JH. Three-dimensional evaluation of the association between tongue position and upper airway morphology in adults: A cross-sectional study. Korean J Orthod 2023; 53:317-327. [PMID: 37746777 PMCID: PMC10547593 DOI: 10.4041/kjod23.019] [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: 02/02/2023] [Revised: 08/10/2023] [Accepted: 08/13/2023] [Indexed: 09/26/2023] Open
Abstract
Objective This study aimed to evaluate the association between low tongue position (LTP) and the volume and dimensions of the nasopharyngeal, retropalatal, retroglossal, and hypopharyngeal segments of the upper airway. Methods A total of 194 subjects, including 91 males and 103 females were divided into a resting tongue position (RTP) group and a LTP group according to their tongue position. Subjects in the LTP group were divided into four subgroups (Q1, Q2, Q3, and Q4) according to the intraoral space volume. The 3D slicer software was used to measure the volume and minimum and average cross-sectional areas of each group. Airway differences between the RTP and LTP groups were analyzed to explore the association between tongue position and the upper airway. Results No significant differences were found in the airway dimensions between the RTP and LTP groups. For both retropalatal and retroglossal segments, the volume and average cross-sectional area were significantly greater in the patients with extremely low tongue position. Regression analysis showed that the retroglossal airway dimensions were positively correlated with the intraoral space volume and negatively correlated with A point-nasion-B point and palatal plane to mandibular plane. Males generally had larger retroglossal and hypopharyngeal airways than females. Conclusions Tongue position did not significantly influence upper airway volume or dimensions, except in the extremely LTP subgroup.
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Affiliation(s)
- Yuchen Zheng
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
- Center for Plastic & Reconstructive Surgery, Department of Stomatology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Hussein Aljawad
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Seok Kim
- Department of Oral Anatomy, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Su-Hoon Choi
- Department of Mathematics and Statistics, Chonnam National University, Gwangju, Korea
| | - Min-Soo Kim
- Department of Mathematics and Statistics, Chonnam National University, Gwangju, Korea
| | - Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
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10
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Lee KC, Lim SW, Cho JH, Oh H, Hwang HS. Survival rates of mandibular fixed retainers: comparison of a tube-type retainer and conventional multistrand retainers : A prospective randomized clinical trial. J Orofac Orthop 2023:10.1007/s00056-023-00447-5. [PMID: 36847790 DOI: 10.1007/s00056-023-00447-5] [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: 02/22/2022] [Accepted: 11/29/2022] [Indexed: 03/01/2023]
Abstract
OBJECTIVE The purposes of this study were to evaluate the survival rate of a tube-type mandibular fixed retainer and compare it to conventional multistrand retainers. MATERIALS AND METHODS In all, 66 patients who had completed their orthodontic treatment were enrolled in this study. They were allocated randomly to a tube-type retainer group or a 0.020 multistrand fixed retainer group. In case of the tube-type retainer, a thermoactive 0.012 NiTi was placed into 6 mini-tubes passively bonded to the anterior teeth. The patients were recalled at 1, 3, 6, 12, and 24 months after retainer placement. During the 2‑year follow-up period, any first-time failure of retainers was recorded. Kaplan-Meier survival analysis and log-rank tests were used to compare the failure rates between the two types of retainers. RESULTS Of the 34 patients, 14 (41.2%) showed failure in the multistrand retainer group, whereas only 2 of 32 (6.3%) reported failure in the tube-type retainer group. There was a statistically significant difference in failure between the multistrand retainer and the tube-type retainer (log-rank test, P = 0.001). The hazard ratio was 11.937 (95% confidence interval 2.708-52.620; P = 0.005). CONCLUSION The tube-type retainer can be used with fewer concerns about recurrent retainer detachments during orthodontic retention.
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Affiliation(s)
- Kyungmin Clara Lee
- Department of Orthodontics, School of Dentistry, Chonnam National University, 33 Yongbong-ro, 61186, Buk-gu, Gwangju, Korea (Republic of)
| | - Seung-Weon Lim
- Division of Orthodontics, Department of Dentistry, Hanyang University Hospital, Seoul, Korea (Republic of)
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, 33 Yongbong-ro, 61186, Buk-gu, Gwangju, Korea (Republic of)
| | - Heesoo Oh
- Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA
| | - Hyeon-Shik Hwang
- Department of Orthodontics, School of Dentistry, Chonnam National University, 33 Yongbong-ro, 61186, Buk-gu, Gwangju, Korea (Republic of).
- Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA.
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11
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Lee S, Kim HJ, Kim JH, Kim TK, Kang CN, Lee JH, Cho JH, Kim SH, Moon SH. Evaluation of the efficacy and safety of NVP-1203 and aceclofenac in patients with acute low back pain and muscle spasm: A randomized, double-blind, active-controlled, parallel, multicenter, phase 3 clinical trial. Eur Rev Med Pharmacol Sci 2023; 27:315-324. [PMID: 36647880 DOI: 10.26355/eurrev_202301_30878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVE Acute low back pain (LBP) is a common condition that can be chronic if not properly treated. Aceclofenac and eperisone hydrochloride are commonly prescribed drugs for acute LBP and muscle spasms. Therefore, NVP-1203, a fixed-dose combination of 100 mg aceclofenac and 75 mg eperisone hydrochloride, is being developed. This study aimed to evaluate the efficacy and safety of NVP-1203 compared to those of a single administration of 100 mg aceclofenac in patients with acute LBP and muscle spasms. PATIENTS AND METHODS Overall, 455 patients with acute LBP and muscle spasms were enrolled. The patients were assigned to NVP-1203 or Airtal group (aceclofenac 100 mg). The primary efficacy endpoint was the mean change in the 100 mm pain movement and resting visual analog scale (VAS) scores on treatment day 7. RESULTS The mean change in the 100 mm pain movement/resting VAS scores from baseline to day 7 was -49.7 ± 21.5/-41.0 ± 19.4 mm and -38.8 ± 18.9/-33.8 ± 18.0 mm for the NVP-1203 and Airtal groups, respectively. The differences between the two groups were statistically significant (movement, p < 0.0001; resting, p = 0.0002). Differences in least-square (LS) mean change of the 100 mm pain movement/resting VAS score between the two groups using the analysis of covariance (ANCOVA) model was -10.2/-7.4 mm, and the upper limit of the 95% confidence interval was -6.44/-4.16 mm. CONCLUSIONS NVP-1203 is more effective in reducing pain than the 100 mg aceclofenac alone. However, the two drugs have similar safety profiles in patients with acute LBP and muscle spasms.
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Affiliation(s)
- S Lee
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Gyeonggi-do, Republic of Korea.
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Park CH, Jeon JB, Oh S, Oh HK, Lee KM, Cho JH, Hwang HS, Oh MH. Comparison of short-term condylar positional changes in mandibular prognathism after surgery-first approach: Symmetric setback versus asymmetric setback. J Stomatol Oral Maxillofac Surg 2022; 123:e940-e947. [PMID: 35817318 DOI: 10.1016/j.jormas.2022.07.002] [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] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/09/2022] [Accepted: 07/04/2022] [Indexed: 10/17/2022]
Abstract
The aim of this study was to compare how the displacement of the mandibular condyle changed after symmetric or asymmetric mandibular setback surgery using the surgery-first approach (SFA). Patients who underwent mandibular setback surgery using the SFA were selected and divided into a symmetry group (n = 18) with differences of less than 2 mm between the right and left setback, and an asymmetry group (n = 18) with a difference of greater than 2 mm. Cone-beam computed tomography (CBCT)-generated cephalograms were obtained after three-dimensional superimposition of CBCT images taken before surgery (T0), within one week after surgery (T1), and seven months after surgery (T2). The condylar positions were measured. Condylar positional changes according to time were compared between the two groups and correlation analysis was performed. There were significant positional changes in mandibular condyles over time in both groups. However, most of these changes returned to their initial state. In the asymmetry group, there was a greater internal rotation of the mandibular condyle on the lesser setback side. The correlation analysis results revealed that only the setback difference was associated with rotational displacement of the condyle on the lesser setback side at two time points (T1-T0, T2-T0). In the SFA, significant condylar displacement occurred immediately after both symmetric and asymmetric mandibular setback surgery, and the right/left difference in mandibular setback showed a significant positive correlation with rotational displacement. Although more significant rotational displacement of the mandibular condyle was observed after asymmetric mandibular setback surgery, the amount was not large enough to be clinically significant.
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Affiliation(s)
- Chae-Hee Park
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jun-Bo Jeon
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Seungwon Oh
- Department of mathematics & Statistics, Chonnam National University, Gwangju, Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Kyung-Min Lee
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Hyeon-Shik Hwang
- Department of Orthodontics, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju; Korean Adult Orthodontic Research Institute, Seoul, Korea
| | - Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea.
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13
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Cho JH, Shin SY. Effects of smoking cessation on the risk of cardiovascular disease: a nationwide population-based study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Cardiovascular disease (CVD) is the global leading cause of death, and the economic and social burden of CVD is still increasing, Smoking is one of the top three leading risk factors for the disease and one of the well-established and important modifiable risk factors for CVD. However, the time course of CVD risk after smoking cessation is unclear.
Purpose
We assess the association between smoking and CVD and the incidence of CVD with years quitting smoking.
Methods
This study used the Korean National Health Insurance Service (NHIS) database. Self-reported smoking habit data were used to classify participants as current, former or never smokers and to investigate the duration and intensity of smoking. Smoking records of participants were updated every 2 years, and all participants whose smoking records were changed or unclear were excluded. The primary outcome was the development of CVD, including myocardial infarction, stroke, heart failure, and cardiovascular death.
Results
Total 5,391,231 participants (953,756 subjects were current smokers, 104,604 subjects were former smokers, 4,432,871 subjects never smoker) were followed-up for an average of 4.2 years. The mean age was 45.8 years, 39.9% were male. Cumulative pack-year (PY) were 14 in current smoker, 10.5 in former smokers at baseline. The median years of quitting smoking for former smoker was 4.
Regardless of whether smoking continues or not, a dose-dependent relationship exists between smoking and CVD (Fig. 1). For those smoked less than 8PY, smoking cessation significantly lowered the CVD risk within 10 years compared to current smokers, and the CVD risk was not significantly different from never smokers (Fig. 2A). However, in the case of smokers over 8PY, although smoking cessation affects the reduction of CVD, the CVD risk decreases slowly over decades, and it takes more than 20 years for the effect of smoking on the CVD risk to disappear (Fig. 2B).
Conclusion
Smoking and CVD have a dose-dependent relationship, and mild smokers with less than 8PY had a similar CVD risk to never smokers when quitting smoking. However, for heavy smokers over 8PY, it takes a long time for the CVD risk from smoking to disappear
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- J H Cho
- Chung-Ang University Hospital , Seoul , Korea (Republic of)
| | - S Y Shin
- Chung-Ang University Hospital , Seoul , Korea (Republic of)
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Oh MH, Park AH, Yun KD, Kook MS, Cho JH. Long-term follow-up implant site development in the submerged mandibular primary second molars: A case report. Angle Orthod 2022; 92:805-814. [PMID: 35969201 DOI: 10.2319/080621-617.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 06/01/2022] [Indexed: 11/23/2022] Open
Abstract
Treatment of ankylosed and submerged primary molars without permanent successors is challenging, as normal vertical dentoalveolar growth is compromised. Thus, grafting techniques and distraction osteogenesis are performed for ridge augmentation before implant restoration. However, these techniques are invasive with limited success. Another treatment for implant site development is noninvasive forced eruption. This case report describes long-term follow-up of alveolar ridge augmentation in the submerged mandibular primary second molars using subluxation and orthodontic forced eruption for implant site development. A 19-year old female had Class II molar relationships, upper anterior crowding with large overjet, missing four second premolars and submerged mandibular primary second molars with inadequate vertical development of alveolar bone. For the vertical alveolar bone alterations in the mandible, forced eruption with subluxation of ankylosed lower primary second molars was applied. Treatment outcome was evaluated over 5 years with stable occlusion, healthy periodontal tissues, and successful radiographic results.
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Lim SW, Jeon JB, Moon RJ, Oh S, Park A, Oh MH, Kim MS, Hwang HS, Cho JH. Association of the three-dimensional skeletal variables with self-recognition of facial asymmetry in skeletal Class III patients. Angle Orthod 2022; 92:512-520. [PMID: 35166777 PMCID: PMC9235387 DOI: 10.2319/072221-579.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 01/01/2022] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To investigate the association between three-dimensional (3D) skeletal variables and self-recognition of facial asymmetry in skeletal Class III patients. MATERIALS AND METHODS Questionnaires and cone beam computed tomography of 74 patients (42 men and 32 women; mean age: 22.8 ± 4.5 years) with skeletal Class III and facial asymmetry were collected retrospectively. Patients were classified into three groups: group Sy (recognition of symmetry), group NS (not sure), and group Asy (recognition of asymmetry), according to their responses to the questionnaires. To assess 3D anatomic differences in the maxillomandibular region, six 3D hard tissue variables: maxillary height, ramal length, frontal ramal inclination (FRI), lateral ramal inclination (LRI), mandibular body length (Mn BL), and mandibular body height (Mn BH) were compared among the three self-recognition groups. Six 3D hard tissue variables and Menton deviation were reduced into three factors and their association with the self-recognition of facial asymmetry was investigated. RESULTS Maxillary height, FRI, LRI, Mn BH, and Menton deviation demonstrated significant differences among the three self-recognition groups. The reduced factors, which consisted of transverse and vertical parameters, and vertical parameter of the mandibular corpus, demonstrated significant differences among the three self-recognition groups. The difference in Mn BH influenced the self-recognition of facial asymmetry. CONCLUSIONS Both the transverse and vertical parameter of the skeleton were determinant in self-recognition of facial asymmetry. Identification of the skeletal difference in the lateral view involving LRI and Mn BH should be included for assessment of facial asymmetry.
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Hong M, Kim I, Cho JH, Kang KH, Kim M, Kim SJ, Kim YJ, Sung SJ, Kim YH, Lim SH, Kim N, Baek SH. Accuracy of artificial intelligence-assisted landmark identification in serial lateral cephalograms of Class III patients who underwent orthodontic treatment and two-jaw orthognathic surgery. Korean J Orthod 2022; 52:287-297. [PMID: 35719042 PMCID: PMC9314217 DOI: 10.4041/kjod21.248] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 11/20/2022] Open
Abstract
Objective To investigate the pattern of accuracy change in artificial intelligence-assisted landmark identification (LI) using a convolutional neural network (CNN) algorithm in serial lateral cephalograms (Lat-cephs) of Class III (C-III) patients who underwent two-jaw orthognathic surgery. Methods A total of 3,188 Lat-cephs of C-III patients were allocated into the training and validation sets (3,004 Lat-cephs of 751 patients) and test set (184 Lat-cephs of 46 patients; subdivided into the genioplasty and non-genioplasty groups, n = 23 per group) for LI. Each C-III patient in the test set had four Lat-cephs initial (T0), pre-surgery (T1, presence of orthodontic brackets [OBs]), post-surgery (T2, presence of OBs and surgical plates and screws [S-PS]), and debonding (T3, presence of S-PS and fixed retainers [FR]). After mean errors of 20 landmarks between human gold standard and the CNN model were calculated, statistical analysis was performed. Results The total mean error was 1.17 mm without significant difference among the four time-points (T0, 1.20 mm; T1, 1.14 mm; T2, 1.18 mm; T3, 1.15 mm). In comparison of two time-points ([T0, T1] vs. [T2, T3]), ANS, A point, and B point showed an increase in error (p < 0.01, 0.05, 0.01, respectively), while Mx6D and Md6D showeda decrease in error (all p < 0.01). No difference in errors existed at B point, Pogonion, Menton, Md1C, and Md1R between the genioplasty and non-genioplasty groups. Conclusions The CNN model can be used for LI in serial Lat-cephs despite the presence of OB, S-PS, FR, genioplasty, and bone remodeling.
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Affiliation(s)
- Mihee Hong
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea.,Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Inhwan Kim
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sang-Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Namkug Kim
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
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Nam YS, Yang DW, Moon JS, Kang JH, Cho JH, Kim OS, Kim MS, Koh JT, Kim YJ, Kim SH. Sclerostin in Periodontal Ligament: Homeostatic Regulator in Biophysical Force-Induced Tooth Movement. J Clin Periodontol 2022; 49:932-944. [PMID: 35373367 DOI: 10.1111/jcpe.13624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 02/25/2022] [Accepted: 03/29/2022] [Indexed: 11/30/2022]
Abstract
AIM This study elucidates the role of sclerostin in periodontal ligament (PDL) as a homeostatic regulator in biophysical force-induced tooth movement (BFTM). MATERIALS AND METHODS BFTM was performed in rats, followed by microarray, immunofluorescence, in situ hybridization, and real-time PCR for detection and identification of the molecules. The periodontal space was analyzed via micro-computed tomography. Effects on osteoclastogenesis and bone resorption were evaluated in mouse bone marrow-derived cells. In vitro human PDL cells were subjected to biophysical forces. RESULTS In the absence of BFTM, sclerostin was hardly detected in the periodontium except the PDL and alveolar bone in the furcation region and apex of the molar roots. However, sclerostin was upregulated in the PDL in vivo by adaptable force, which induced typical transfiguration without changes in periodontal space as well as in vitro PDL cells under compression and tension. In contrast, the sclerostin level was unaffected by heavy force, which caused severe degeneration of the PDL and narrowed periodontal space. Sclerostin inhibited osteoclastogenesis and bone resorption, which corroborates the accelerated tooth movement by the heavy force. CONCLUSIONS Sclerostin in PDL may be a key homeostatic molecule in the periodontium and a biological target for the therapeutic modulation of BFTM. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yoo-Sung Nam
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Dong-Wook Yang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jung-Sun Moon
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jee-Hae Kang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Ok-Su Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Seok Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jeong-Tae Koh
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Young-Jun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sun-Hun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, Korea
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Batbold M, Lim SH, Jeong SR, Oh JS, Kim SJ, Kim YJ, Cho JH, Kang KH, Kim M, Hong M, Sung SJ, Kim YH, Park JH, Baek SH. Vertical bony step between proximal and distal segments after mandibular setback is related with relapse: A cone-beam computed tomographic study. Am J Orthod Dentofacial Orthop 2022; 161:e524-e533. [DOI: 10.1016/j.ajodo.2021.10.016] [Citation(s) in RCA: 1] [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: 07/01/2021] [Revised: 10/01/2021] [Accepted: 10/01/2021] [Indexed: 11/01/2022]
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Yim S, Kim S, Kim I, Park JW, Cho JH, Hong M, Kang KH, Kim M, Kim SJ, Kim YJ, Kim YH, Lim SH, Sung SJ, Kim N, Baek SH. Accuracy of one-step automated orthodontic diagnosis model using a convolutional neural network and lateral cephalogram images with different qualities obtained from nationwide multi-hospitals. Korean J Orthod 2022; 52:3-19. [PMID: 35046138 PMCID: PMC8770967 DOI: 10.4041/kjod.2022.52.1.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/01/2021] [Accepted: 07/02/2021] [Indexed: 11/10/2022] Open
Abstract
Objective The purpose of this study was to investigate the accuracy of one-step automated orthodontic diagnosis of skeletodental discrepancies using a convolutional neural network (CNN) and lateral cephalogram images with different qualities from nationwide multi-hospitals. Methods Among 2,174 lateral cephalograms, 1,993 cephalograms from two hospitals were used for training and internal test sets and 181 cephalograms from eight other hospitals were used for an external test set. They were divided into three classification groups according to anteroposterior skeletal discrepancies (Class I, II, and III), vertical skeletal discrepancies (normodivergent, hypodivergent, and hyperdivergent patterns), and vertical dental discrepancies (normal overbite, deep bite, and open bite) as a gold standard. Pre-trained DenseNet-169 was used as a CNN classifier model. Diagnostic performance was evaluated by receiver operating characteristic (ROC) analysis, t-stochastic neighbor embedding (t-SNE), and gradient-weighted class activation mapping (Grad-CAM). Results In the ROC analysis, the mean area under the curve and the mean accuracy of all classifications were high with both internal and external test sets (all, > 0.89 and > 0.80). In the t-SNE analysis, our model succeeded in creating good separation between three classification groups. Grad-CAM figures showed differences in the location and size of the focus areas between three classification groups in each diagnosis. Conclusions Since the accuracy of our model was validated with both internal and external test sets, it shows the possible usefulness of a one-step automated orthodontic diagnosis tool using a CNN model. However, it still needs technical improvement in terms of classifying vertical dental discrepancies.
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Affiliation(s)
- Sunjin Yim
- Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Sungchul Kim
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Inhwan Kim
- Department of Biomedical Engineering, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Sang Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Namkug Kim
- Department of Convergence Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
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Lim SW, Kim M, Hong M, Kang KH, Kim M, Kim SJ, Kim YJ, Kim YH, Lim SH, Sung SJ, Baek SH, Cho JH. Comparison of one-jaw and two-jaw orthognathic surgery in patients with skeletal Class III malocclusion using data from 10 multi-centers in Korea: Part I. Demographic and skeletodental characteristics. Korean J Orthod 2022; 52:66-74. [PMID: 35046143 PMCID: PMC8770961 DOI: 10.4041/kjod.2022.52.1.66] [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: 04/05/2021] [Revised: 07/05/2021] [Accepted: 08/09/2021] [Indexed: 11/25/2022] Open
Abstract
Objective To investigate demographic and skeletodental characteristics of one-jaw (1J-OGS) and two-jaw orthognathic surgery (2J-OGS) in patients with skeletal Class III malocclusion. Methods 750 skeletal Class III patients who underwent OGS at 10 university hospitals in Korea between 2015 and 2019 were investigated; after dividing them into the 1J-OGS (n = 186) and 2J-OGS groups (n = 564), demographic and skeletodental characteristics were statistically analyzed. Results 2J-OGS was more frequently performed than 1J-OGS (75.2 vs. 24.8%), despite regional differences (capital area vs. provinces, 86.6 vs. 30.7%, p < 0.001). Males outnumbered females, and their mean operation age was older in both groups. Regarding dental patterns, the most frequent maxillary arch length discrepancy (ALD) was crowding in the 1J-OGS group (52.7%, p < 0.001) and spacing in the 2J-OGS group (40.4%, p < 0.001). However, the distribution of skeletal pattern was not significantly different between the two groups (all p > 0.05). The most prevalent skeletal patterns in both groups were hyper-divergent pattern (50.0 and 54.4%, respectively) and left-side chin point deviation (both 49.5%). Maxillary spacing (odds ratio [OR], 3.645; p < 0.001) increased the probability of 2J-OGS, while maxillary crowding (OR, 0.672; p < 0.05) and normo-divergent pattern (OR, 0.615; p < 0.05) decreased the probability of 2J-OGS. Conclusions In both groups, males outnumbered females, and their mean operation age was older. The most frequent ALD was crowding in the 1J-OGS group, and spacing in the 2J-OGS group, while skeletal characteristics were not significantly different between the two groups.
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Affiliation(s)
- Seung-Weon Lim
- Division of Orthodontics, Department of Dentistry, Hanyang University Hospital, Seoul, Korea
| | - Minsoo Kim
- Department of Statistics, College of Natural Sciences, Chonnam National University, Gwangju, Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Sang Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea
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Gil SM, Kim I, Cho JH, Hong M, Kim M, Kim SJ, Kim YJ, Kim YH, Lim SH, Sung SJ, Baek SH, Kim N, Kang KH. Accuracy of auto-identification of the posteroanterior cephalometric landmarks using cascade convolution neural network algorithm and cephalometric images of different quality from nationwide multiple centers. Am J Orthod Dentofacial Orthop 2022; 161:e361-e371. [DOI: 10.1016/j.ajodo.2021.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 11/01/2021] [Accepted: 11/01/2021] [Indexed: 12/01/2022]
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Kim J, Kim I, Kim YJ, Kim M, Cho JH, Hong M, Kang KH, Lim SH, Kim SJ, Kim YH, Kim N, Sung SJ, Baek SH. Accuracy of automated identification of lateral cephalometric landmarks using cascade convolutional neural networks on lateral cephalograms from nationwide multi-centres. Orthod Craniofac Res 2021; 24 Suppl 2:59-67. [PMID: 33973341 DOI: 10.1111/ocr.12493] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 01/25/2021] [Revised: 04/16/2021] [Accepted: 04/27/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To investigate the accuracy of automated identification of cephalometric landmarks using the cascade convolutional neural networks (CNN) on lateral cephalograms acquired from nationwide multi-centres. SETTINGS AND SAMPLE POPULATION A total of 3150 lateral cephalograms were acquired from 10 university hospitals in South Korea for training. MATERIALS AND METHODS We evaluated the accuracy of the developed model with independent 100 lateral cephalograms as an external validation. Two orthodontists independently identified the anatomic landmarks of the test data set using the V-ceph software (version 8.0, Osstem, Seoul, Korea). The mean positions of the landmarks identified by two orthodontists were regarded as the gold standard. The performance of the CNN model was evaluated by calculating the mean absolute distance between the gold standard and the automatically detected positions. Factors associated with the detection accuracy for landmarks were analysed using the linear regression models. RESULTS The mean inter-examiner difference was 1.31 ± 1.13 mm. The overall automated detection error was 1.36 ± 0.98 mm. The mean detection error for each landmark ranged between 0.46 ± 0.37 mm (maxillary incisor crown tip) and 2.09 ± 1.91 mm (distal root tip of the mandibular first molar). A significant difference in the detection accuracy among cephalograms was noted according to hospital (P = .011), sensor type (P < .01), and cephalography machine model (P < .01). CONCLUSION The automated cephalometric landmark detection model may aid in preliminary screening for patient diagnosis and mid-treatment assessment, independent of the type of the radiography machines tested.
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Affiliation(s)
- Jaerong Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Inhwan Kim
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Yoon-Ji Kim
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Minji Kim
- Department of Orthodontics, College of Medicine, Ewha Woman's University, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea
| | - Mihee Hong
- Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Sung-Hoon Lim
- Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
| | - Su-Jung Kim
- Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
| | - Young Ho Kim
- Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
| | - Namkug Kim
- Department of Convergence Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sang-Jin Sung
- Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
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Oh MH, Park AH, Kim M, Kim EA, Cho JH. Part II. What drives Korean adults to seek orthodontic treatment: Factors contributing to orthodontic treatment decisions. Korean J Orthod 2021; 51:3-14. [PMID: 33446616 PMCID: PMC7837801 DOI: 10.4041/kjod.2021.51.1.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 09/13/2020] [Accepted: 10/01/2020] [Indexed: 12/28/2022] Open
Abstract
Objective This study aimed to identify the perceptions of orthodontic treatment among Korean adults and determine the factors that drive them to seek orthodontic treatment. Methods A total of 2,321 adults aged 19–64 years were surveyed using an internet research system from a specialized research company. The participants were divided into the following groups based on their experience of and willingness to undergo orthodontic treatment experience, acceptance, and non-acceptance groups. The characteristics of the participants were compared using analysis of variance with post-hoc analysis. Multinomial logistic regression analysis was performed in all three models with the non-acceptance group as a reference. Results In terms of demographic characteristics, age, gender, marital status, and education had significant influences on orthodontic treatment decisions in adults in the experience and acceptance groups (p < 0.001). When all the factors were analyzed, age, marital status, past dental treatment experience, regular oral examinations, demand for orthodontic treatment, optimal treatment period, health insurance coverage, information on orthodontic treatments, perceptions regarding orthodontic treatment, and psychosocial impact of dental esthetics significantly influenced orthodontic treatment decisions in adults in the experience and acceptance groups (p < 0.001). Conclusions These findings suggest that various factors influence orthodontic treatment decisions in adults. Individuals who seek orthodontic treatment were found to undergo more regular dental treatment and oral examination than those who did not. They also had a better perception of orthodontic treatment and more negative values for the psychosocial impact of dental esthetics.
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Affiliation(s)
- Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Ae-Hyun Park
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - MinSoo Kim
- Department of Statistics, College of Natural Sciences, Chonnam National University, Gwangju, Korea
| | - Eun-A Kim
- Department of Nursing, Honam University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
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Oh MH, Kim EA, Park AH, Kim M, Cho JH. Part I. What drives Korean adults to seek orthodontic treatment: Reliability and validity of a measurement instrument for the perception of orthodontic treatment. Korean J Orthod 2020; 50:363-372. [PMID: 33144525 PMCID: PMC7642226 DOI: 10.4041/kjod.2020.50.6.363] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/21/2020] [Accepted: 07/23/2020] [Indexed: 11/24/2022] Open
Abstract
Objective To develop a standardized instrument to measure the level of cognition for orthodontic treatment in adults, and verify its reliability and validity for assessing perceptions of orthodontic treatment in adults. Methods A total of 406 adults aged 19–64 years were surveyed by an internet research system. A tool was developed through the instrument development and verification stages. The data were analyzed by correlation analysis, exploratory factor analysis, confirmatory factor analysis, and Cronbach’s α test. Results The instrument consisted of 11 items covering four factors related to orthodontic treatment. Three items were related to general perception, four described the perception of the treatment for adults, two related to the treatment effects, and two related to the retention of orthodontic treatment. In the reliability test, Cronbach’s α was 0.845 for the 11 items. In assessments for individual components, Cronbach’s α was 0.764 for the general perception of orthodontic treatment, 0.705 for the perception of this treatment for adults, 0.707 for the effects of the treatment, and 0.701 for the retention of orthodontic treatment. Finally, a measurement instrument for the perception of orthodontic treatment in adults was designed to assess the 11 items on a four-point Likert scale. Conclusions This study developed a standard measurement instrument for assessing the perception of orthodontic treatment in adults. The proposed instrument will enable additional studies on the influence of an adult’s perception of orthodontic treatment on the decision to undergo treatment.
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Affiliation(s)
- Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Eun-A Kim
- Department of Nursing, Honam University, Gwangju, Korea
| | - Ae-Hyun Park
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - MinSoo Kim
- Department of Statistics, College of Natural Sciences, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
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Kim WS, Kim Y, Cho JH, Oh H, Hwang HS. Unlocking ectopically erupting permanent first molars using light wires. J Am Dent Assoc 2020; 151:857-862. [PMID: 33121607 DOI: 10.1016/j.adaj.2020.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/27/2020] [Accepted: 07/14/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND AND OVERVIEW Ectopic eruption of permanent molars is one of the challenges that arise in the early mixed dentition period, particularly when the root of the primary second molar is resorbed due to mesial angulation of the impacted first molar. The authors introduce a simple and efficient method to unlock ectopically erupting first molars using a light wire. CASE DESCRIPTION The authors describe the cases of 2 girls (8 and 7 years old) who sought treatment for locking of their maxillary and mandibular first molars, respectively. A 0.012-inch nickel titanium wire was compressed and bonded to the first molars and primary second molars to unlock the first molars. The primary second molars were splinted to the adjacent primary first molars and canines using bonded multistranded wires. As the compressed wires straightened over time, the locked first molars were tipped back without any substantial mesial movement of the primary teeth. After unlocking the molars, the nickel titanium wires were removed to allow spontaneous eruption of the first molars. CONCLUSIONS AND PRACTICAL IMPLICATIONS Although the primary molar roots were considerably resorbed, the ectopically erupting first molars were unlocked successfully without any substantial movement of the primary teeth. The clinical procedure was simple, and no laboratory procedures were needed. In addition, the anchorage burden was reduced with the use of light forces. The authors suggest that primary second molars with substantial root resorption due to ectopic eruption of permanent first molars can be saved simply and efficiently.
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Lim SW, Park H, Lim SY, Choo HH, Baek SH, Hwang HS, Cho JH. Can we estimate root axis using a 3-dimensional tooth model via lingual-surface intraoral scanning? Am J Orthod Dentofacial Orthop 2020; 158:e99-e109. [PMID: 33131571 DOI: 10.1016/j.ajodo.2020.07.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION This research aimed to compare the estimation error of the root axis using 3-dimensional (3D) tooth models at the midtreatment stage between the whole-surface scan (WSS) and lingual-surface scan (LSS) methods. METHODS The sample consisted of 208 teeth (26 each of central incisors, canines, second premolars, and first molars in the maxillary and mandibular dentition) from 13 patients whose pre- and midtreatment intraoral scan and cone-beam computed tomography (CBCT) were available. The 3D tooth models were constructed by merging the intraoral-scan crowns and the CBCT-scan roots obtained at the pretreatment stage. To estimate the root axis at the midtreatment stage, we superimposed the individual 3D tooth models onto the midtreatment intraoral scan obtained by the WSS and LSS methods. The midtreatment CBCT scan was used as the gold standard to determine the real root axis. The estimated root axis in terms of mesiodistal angulation and buccolingual inclination was measured in the WSS and LSS methods, and statistical analysis was performed. RESULTS The estimation errors of the mesiodistal angulation and buccolingual inclination were <2.0° in both methods. The LSS method demonstrated a statistically larger but clinically insignificant estimation error than the WSS method in the mandibular canine (mesiodistal angulation, 1.95° vs 1.62°) and the total tested teeth (mesiodistal angulation, 1.40° vs 1.29°; buccolingual inclination, 1.51° vs 1.41°). CONCLUSIONS Because the estimation errors of the root axis angle using the 3D tooth model by the WSS and LSS methods were within the clinically acceptable range, the root axis can be estimated by both methods.
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Affiliation(s)
- Seung-Weon Lim
- Department of Orthodontics, Chonnam National University Dental Hospital, Chonnam National University, Gwangju, South Korea
| | - Hunkyung Park
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | | | | | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, South Korea
| | - Hyeon-Shik Hwang
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, South Korea.
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Cho JH, Han KD, Jung HY, Bond A. National health screening may reduce cardiovascular morbidity and mortality among the elderly. Public Health 2020; 187:172-176. [PMID: 32992163 DOI: 10.1016/j.puhe.2020.08.010] [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: 02/27/2020] [Revised: 08/04/2020] [Accepted: 08/09/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES Since 2007, the Korean government has provided a free health screening to the elderly starting at the age of 66 years. The purpose of this study was to evaluate the association between this general health screening and the incidences of stroke and myocardial infarction and mortality. STUDY DESIGN The study design used in this study is a retrospective cohort study. METHODS The study was conducted using the universe of insurance claims data of Korea and followed a cohort of individuals aged 66 years in 2009 from 2006 through 2016 (n = 354,194). We assessed the association between receipt of the national health screening and health outcomes using propensity matching and Cox proportional hazard models. RESULTS We found that the receipt of the national health screening was associated with a reduction in negative health outcomes. The hazard ratio for stroke was 0.89 (P < 0.001), 0.88 (P < 0.001) for myocardial infarction and 0.58 for death (P < 0.001). CONCLUSION Korea's national health screening was associated with reductions in cardiovascular morbidity and mortality in the elderly.
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Affiliation(s)
- J H Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Konkuk University, Seoul, Republic of Korea.
| | - K D Han
- Department of Biostatistics, Catholic University College of Medicine, Seoul, Republic of Korea
| | - H-Y Jung
- Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, NY, USA
| | - A Bond
- Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, NY, USA
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Oh MH, Cho JH. The three-dimensional morphology of mandible and glenoid fossa as contributing factors to menton deviation in facial asymmetry-retrospective study. Prog Orthod 2020; 21:33. [PMID: 32959138 PMCID: PMC7505907 DOI: 10.1186/s40510-020-00335-3] [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: 04/01/2020] [Accepted: 08/13/2020] [Indexed: 01/27/2024] Open
Abstract
Background The aim of this study is to evaluate whether the three-dimensional (3D) morphology of the mandibular condyle, glenoid fossa, and mandible correlated with menton deviation in facial asymmetry. Subjects and methods Thirty adults (15 males and 15 females; mean age, 23.2 ± 3.8 years) with facial asymmetry were included. Linear, angular, and volumetric measurements of the 3D morphology of the mandibular condyle, glenoid fossa, and mandible were recorded using computed tomography (CT) images. The right/left differences were obtained by subtracting the left value from the right value, and an independent t test was used to compare the differences between the females and males. Multiple regression analysis was performed to identify the correlation between the right/left difference of the 3D morphology and menton deviation. Results The results of the comparative analysis did not show any statistical difference between the females and males (P > .05), so the females and males were combined. Multiple regression analysis for the mandibular condyle, glenoid fossa, and mandible showed that neck length, ramus length, and frontal ramal inclination had positive influences on menton deviation, with 76.5% of explanatory power. The neck length and head volume of the mandibular condyle when only the mandibular condyle was considered, and the ramus length and frontal ramal inclination when only the mandible was considered had positive influence on menton deviation with 69.9% and 68.6% explanatory power, respectively. On the other hand, when only considering glenoid fossa, the glenoid fossa had little effect on menton deviation with 15.7% of explanatory power. Conclusions In facial asymmetry, the right/left differences in mandibular condyle and mandible have more impact on the menton deviation than the right/left differences in glenoid fossa. Trial registration CNUDH, CNUDH-EXP-2017-016. Registered 28 September 2017
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Affiliation(s)
- Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Dental 4D Research Institute, Dental Science Research Institute, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Korea.
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Lim SW, Moon RJ, Kim MS, Oh MH, Lee KM, Hwang HS, Kim TW, Baek SH, Cho JH. Construction reproducibility of a composite tooth model composed of an intraoral-scanned crown and a cone-beam computed tomography-scanned root. Korean J Orthod 2020; 50:229-237. [PMID: 32632042 PMCID: PMC7369385 DOI: 10.4041/kjod.2020.50.4.229] [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: 11/12/2019] [Revised: 01/30/2020] [Accepted: 03/03/2020] [Indexed: 11/10/2022] Open
Abstract
Objective To evaluate the construction reproducibility of a composite tooth model (CTM) composed of an intraoral-scanned crown and a cone-beam computed tomography (CBCT)-scanned root. Methods The study assessed 240 teeth (30 central incisors, 30 canines, 30 second premolars, and 30 first molars in the maxillary and mandibular arches) from 15 young adult patients whose pre-treatment intraoral scan and CBCT were available. Examiner-Reference (3 years' experience in CTM construction) and Examiners-A and Examiner-B (no experience) constructed the individual CTMs independently by performing the following steps: image acquisition and processing into a three-dimensional model, integration of intraoral-scanned crowns and CBCT-scanned teeth, and replacement of the CBCT-scanned crown with the intraoral-scanned crown. The tooth axis angle in terms of mesiodistal angulation and buccolingual inclination of the CTMs constructed by the three examiners were measured. To assess the construction reproducibility of CTMs, intraclass correlation coefficient (ICC) assessments were performed. Results The ICC values of mesiodistal angulation and buccolingual inclination among the 3 examiners showed excellent agreement (0.950-0.992 and 0.965-0.993; 0.976-0.994 and 0.973-0.995 in the maxillary and mandibular arches, respectively). Conclusions The CTM showed excellent construction reproducibility in mesiodistal angulation and buccolingual inclination regardless of the construction skill and experience levels of the examiners.
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Affiliation(s)
- Seung-Weon Lim
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Ryu-Jin Moon
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Seok Kim
- Department of Oral Anatomy, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Kyung-Min Lee
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hyeon-Shik Hwang
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Tae-Woo Kim
- Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
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Lim SW, Hwang HS, Cho IS, Baek SH, Cho JH. Registration accuracy between intraoral-scanned and cone-beam computed tomography-scanned crowns in various registration methods. Am J Orthod Dentofacial Orthop 2020; 157:348-356. [PMID: 32115113 DOI: 10.1016/j.ajodo.2019.04.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 10/24/2022]
Abstract
INTRODUCTION The purpose of this study was to investigate the registration accuracy between intraoral-scanned crowns and cone-beam computed tomography (CBCT)-scanned crowns in various registration methods. METHODS The samples consisted of 18 Korean adult patients, whose pretreatment intraoral scans and CBCT images were available. A 3-dimensional (3D) dental model was fabricated using a TRIOS intraoral scanner (3Shape, Copenhagen, Denmark) and the OrthoAnalyzer program (version 1.7.1.4; 3Shape). After the CBCT image was taken, 3D volume rendering was performed to fabricate a 3D dental model using InVivo5 software (version 5.1; Anatomage, San Jose, Calif). Registration of the 3D dental crowns made from intraoral- and CBCT-scanned images was performed with Rapidform 2006 software (Inus Technology, Seoul, Korea) by a single operator. According to registration methods, 3 groups were established: individual-arch-total-registration group, individual-arch-segment-registration group, and bimaxillary-arch-centric-occlusion-registration group (n = 18 per group). After the amounts of shell/shell deviation were obtained, the mixed model analysis of variance and Bonferroni correction were performed. RESULTS Although there was no significant difference in the registration accuracy between the individual-arch-total-registration group and individual-arch-segment-registration group, the bimaxillary-arch-centric-occlusion-registration group exhibited the lowest registration accuracy (maxillary and mandibular teeth, all 0.21 mm in the individual-arch-total-registration group; all 0.20 mm in the individual-arch-segment-registration group vs 0.26 mm and 0.25 mm in the bimaxillary-arch-centric-occlusion-registration group; P <0.001). Color-coded visualization charts exhibited that most red spots were localized on the occlusal surface of the posterior teeth in all 3 groups. CONCLUSIONS When considering the registration accuracy and convenience of the process, the individual-arch-total-registration method can be regarded as an efficient tool when integrating CBCT-scanned crown and intraoral-scanned crown.
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Affiliation(s)
- Seung-Weon Lim
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea; Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Hyeon-Shik Hwang
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Il-Sik Cho
- Private practice, Seoul Barune orthodontic clinic, Pohang, Gyeongsangbuk-do, Korea
| | - Seung-Hak Baek
- Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea.
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Park HJ, Cho JH, Kim HJ, Park JY, Lee HS, Byun MK. The effect of low body mass index on the development of chronic obstructive pulmonary disease and mortality. J Intern Med 2019; 286:573-582. [PMID: 31215064 DOI: 10.1111/joim.12949] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Sarcopenia may worsen disease progression and lead to poor outcomes in chronic obstructive pulmonary disease (COPD). OBJECTIVES We aimed to determine the effect of BMI on the development of COPD and mortality. METHODS We enrolled 437 584 participants registered in the physical health check-up cohort database of the Korean National Health Interview Survey from 2002 to 2003, and we defined COPD diagnosis based on the ICD-10 code and prescribed medication. BMI (kg m-2 ) classified them to five groups (low BMI < 18.5, normal BMI 18.5-23, overweight 23-25, obesity 25-30, severe obesity ≥30) at baseline. RESULTS Participants in the low BMI group had a significantly higher rate of COPD development for 13 years (7.6%) than those in other groups (3.4-4.1%, P < 0.0001). Amongst never or light smokers, COPD development in the low BMI group (5.6-6.7%) was significantly higher than that in other groups (2.8-4.7%). Similarly, amongst participants with a smoking history of ≥30 years, COPD development in the low BMI group (20.1%) was higher than those in other groups (8.4-12.4%). On multivariable analysis, normal or higher than normal body weight was significantly protective against the development of COPD (hazard ratio [HR], 0.609-0.739,) compared to low BMI. COPD-free-survival (HR, 0.491-0.622) and overall survival (HR, 0.440-0.585) were also better in them compared to those with low BMI (all P < 0.0001). CONCLUSIONS Low BMI is an important risk factor for COPD development and mortality. Maintaining adequate body weight may reduce the risk for COPD development and mortality.
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Affiliation(s)
- H J Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J H Cho
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - H J Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - J-Y Park
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - H S Lee
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - M K Byun
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Park WY, Kim MS, Kim MS, Oh MH, Lee SY, Kim SH, Cho JH. Effects of pre-applied orthodontic force on the regeneration of periodontal tissues in tooth replantation. Korean J Orthod 2019; 49:299-309. [PMID: 31598486 PMCID: PMC6769261 DOI: 10.4041/kjod.2019.49.5.299] [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: 02/19/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 11/29/2022] Open
Abstract
Objective This study aimed to investigate the effect of pre-applied orthodontic force on the regeneration of periodontal ligament (PDL) tissues and the underlying mechanisms in tooth replantation. Methods Orthodontic force (50 cN) was applied to the left maxillary first molars of 7-week-old male Sprague–Dawley rats (n = 32); the right maxillary first molars were left untreated to serve as the control group. After 7 days, the first molars on both sides were fully luxated and were immediately replanted in their original sockets. To verify the effects of the pre-applied orthodontic force, we assessed gene expression by using microarray analysis and real-time reverse transcription polymerase chain reaction (RT-PCR), cell proliferation by using proliferating cell nuclear antigen (PCNA) immunofluorescence staining, and morphological changes by using histological analysis. Results Application of orthodontic force for 7 days led to the proliferation of PDL tissues, as verified on microarray analysis and PCNA staining. Histological analysis after replantation revealed less root resorption, a better arrangement of PDL fibers, and earlier regeneration of periodontal tissues in the experimental group than in the control group. For the key genes involved in periodontal tissue remodeling, including CXCL2, CCL4, CCL7, MMP3, PCNA, OPG, and RUNX2, quantitative RT-PCR confirmed that messenger RNA levels were higher at 1 or 2 weeks in the experimental group. Conclusions These results suggest that the application of orthodontic force prior to tooth replantation enhanced the proliferation and activities of PDL cells and may lead to higher success rates with fewer complications.
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Affiliation(s)
| | - Min Soo Kim
- Department of Statistics, College of Natural Sciences, Chonnam National University, Gwangju, Korea
| | - Min-Seok Kim
- Department of Oral Anatomy, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Su-Young Lee
- Department of Oral Anatomy, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Sun-Hun Kim
- Department of Oral Anatomy, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea.,Dental 4D Research Institute, Chonnam National University, Gwangju, Korea
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Moon JS, Lee SY, Kim JH, Choi YH, Yang DW, Kang JH, Ko HM, Cho JH, Koh JT, Kim WJ, Kim MS, Kim SH. Synergistic alveolar bone resorption by diabetic advanced glycation end products and mechanical forces. J Periodontol 2019; 90:1457-1469. [PMID: 31294467 DOI: 10.1002/jper.18-0453] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 01/08/2019] [Accepted: 03/01/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND The association between diabetes mellitus (DM) and bone diseases is acknowledged. However, the mechanistic pathways leading to the alveolar bone (AB) destruction remain unclear. This study aims to elucidate the mechanical forces (MF)-induced AB destruction in DM and its underlying mechanism. METHODS In vivo periodontal tissue responses to MF were evaluated in rats with diabetes. In vitro human periodontal ligament (PDL) cells were either treated with advanced glycation end products (AGEs) alone or with AGEs and MF. RESULTS In vivo, the transcription of VEGF-A, colony stimulating factor-1 (CSF-1), and Ager was upregulated in diabetes, whereas changes in DDOST and Glo1 mRNAs were negligible. DM induced VEGF-A protein in the vascular cells of the PDL and subsequent angiogenesis, but DM itself did not induce osteoclastogenesis. MF-induced AB resorption was augmented in DM, and such augmentation was morphologically substantiated by the occasional undermining resorption as well as the frontal resorption of the AB by osteoclasts. The mRNA levels of CSF-1 and vascular endothelial growth factor (VEGF) during MF application were highly elevated in diabetes, compared with those of the normal counterparts. In vitro, AGEs treatment elevated Glut-1 and CSF-1 mRNA levels via the p38 and JNK pathways, whereas OGT and VEGF levels remained unchanged. Compressive MF especially caused upregulation of VEGF, CSF-1, and Glut-1 levels, and such upregulation was further enhanced by AGEs treatment. CONCLUSIONS Overloaded MF and AGEs metabolites may synergistically aggravate AB destruction by upregulating CSF-1 and VEGF. Therefore, regulating the compressive overloading of teeth, as well as the levels of diabetic AGEs, may prove to be an effective therapeutic modality for managing DM-induced AB destruction.
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Affiliation(s)
- Jung-Sun Moon
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Su-Young Lee
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jung-Ha Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Yoon-Ho Choi
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Dong-Wook Yang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jee-Hae Kang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Hyun-Mi Ko
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jin-Hyoung Cho
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jeong-Tae Koh
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Won-Jae Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Min-Seok Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Sun-Hun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
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Liu SD, Song MH, Yun W, Lee JH, Kim HB, Cho JH. Effect of carvacrol essential oils on immune response and inflammation-related genes expression in broilers challenged by lipopolysaccharide. Poult Sci 2019; 98:2026-2033. [PMID: 30590708 DOI: 10.3382/ps/pey575] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 05/28/2018] [Accepted: 12/08/2018] [Indexed: 02/06/2023] Open
Abstract
This experiment was conducted to study the effects of orally administered carvacrol essential oils on immune response and inflammation-related genes expression in broilers challenged by lipopolysaccharide (LPS). Eighty 28-day-old (1.28 ± 0.15 kg) ROSS 308 broilers were assigned to a 2 × 2 factorial arrangement of treatments (20 pens of 1 chick/trt). Factors were carvacrol essential oil (orally administered or non-orally administered) and LPS (challenged or non-challenged). Individually housed broilers were randomly assigned (n = 20 broilers per treatment: 10 males and 10 females) to four treatments: (1) basic diet (CTR), (2) basic diet + carvacrol (CAR), (3) basic diet + LPS-challenge (LPS), (4) basic diet + carvacrol + LPS-challenge (CAR+LPS). All were fed with the same diet. The experimental period was for 15 d, after which injecting LPS significantly up-regulated the gene expression levels of TNF-α (P < 0.05), IL-1β (P < 0.05), IL-6 (P < 0.05), IL-8 (P < 0.05), TLR2 (P < 0.05), TLR4 (P < 0.05), NF-κB p65 (P < 0.05), AVBD-9 (P < 0.05), and SIgA(P < 0.05) compared with the CTR group; the broilers were challenged by LPS after oral administration of carvacrol, they had significant lower on the gene expression levels of TNF-α (P < 0.05), IL-1β (P < 0.05), IL-6 (P < 0.05), TLR4 (P < 0.05), NF-κB p65 (P < 0.05), and AVBD-9 (P < 0.05) than the LPS group. In conclusion, the broilers orally administrated carvacrol essential oils inhibited the secretion of inflammatory cytokines caused by LPS, affected the pathway of TLRs/NF-κB, and showed an anti-inflammatory function.
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Affiliation(s)
- S D Liu
- Division of Food and Animal Science, Chungbuk National University, Cheongju-si 361-763, Republic of Korea.,College of Animal Science and Technology, Hebei Agricultural University, Baoding, 071000, China
| | - M H Song
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - W Yun
- Division of Food and Animal Science, Chungbuk National University, Cheongju-si 361-763, Republic of Korea
| | - J H Lee
- Division of Food and Animal Science, Chungbuk National University, Cheongju-si 361-763, Republic of Korea
| | - H B Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-714, Republic of Korea
| | - J H Cho
- Division of Food and Animal Science, Chungbuk National University, Cheongju-si 361-763, Republic of Korea
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Park HY, Lee JS, Cho JH, Hwang HS, Lee KM. Accuracy of three-dimensional cephalograms generated using a biplanar imaging system. Korean J Orthod 2018; 48:292-303. [PMID: 30206528 PMCID: PMC6123077 DOI: 10.4041/kjod.2018.48.5.292] [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: 08/11/2017] [Revised: 01/15/2018] [Accepted: 01/19/2018] [Indexed: 11/10/2022] Open
Abstract
Objective Biplanar imaging systems allow for simultaneous acquisition of lateral and frontal cephalograms. The purpose of this study was to compare measurements recorded on three-dimensional (3D) cephalograms constructed from two-dimensional conventional radiographs and biplanar radiographs generated using a new biplanar imaging system with those recorded on cone-beam computed tomography (CBCT)-generated cephalograms in order to evaluate the accuracy of the 3D cephalograms generated using the biplanar imaging system. Methods Three sets of lateral and frontal radiographs of 15 human dry skulls with prominent facial asymmetry were obtained using conventional radiography, the biplanar imaging system, and CBCT. To minimize errors in the construction of 3D cephalograms, fiducial markers were attached to anatomical landmarks prior to the acquisition of radiographs. Using the 3D Ceph™ program, 3D cephalograms were constructed from the images obtained using the biplanar imaging system (3D cephbiplanar), conventional radiography (3D cephconv), and CBCT (3D cephcbct). A total of 34 measurements were obtained compared among the three image sets using paired t-tests and Bland-Altman plotting. Results There were no statistically significant differences between the 3D cephbiplanar and 3D cephcbct measurements. In addition, with the exception of one measurement, there were no significant differences between the 3D cephcbct and 3D cephconv measurements. However, the values obtained from 3D cephconv showed larger deviations than those obtained from 3D cephbiplanar. Conclusions The results of this study suggest that the new biplanar imaging system enables the construction of accurate 3D cephalograms and could be a useful alternative to conventional radiography.
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Affiliation(s)
- Ha-Yeon Park
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jae-Seo Lee
- Department of Radiology, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hyeon-Shik Hwang
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Kyung-Min Lee
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
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Lee WJ, Kim DM, Lee UY, Cho JH, Kim MS, Hong JH, Hwang YI. A Preliminary Study of the Reliability of Anatomical Facial Landmarks Used in Facial Comparison. J Forensic Sci 2018; 64:519-527. [PMID: 30107642 DOI: 10.1111/1556-4029.13873] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/04/2018] [Accepted: 06/25/2018] [Indexed: 11/30/2022]
Abstract
Anatomical landmarks are considered the most objective indicators for use in forensic facial comparisons. Therefore, accurately identifying and locating these landmarks is the beginning of reliable facial comparison. This study evaluated the accuracy with which facial landmarks are located and examined their reliability according to type of landmark, head posture, and image quality. Nine operators located a series of landmarks on prepared facial images used to produce comparison images. Then, the average distances between the reciprocal landmarks (ADRL) on the reference and the comparison images were measured as indicators of landmark reliability. We found that a set of landmarks had higher or lower reliability as a function of the head angle and image quality. More reliable landmarks were associated with certain head postures and degrees of image quality. These should be used for facial comparison analysis depending on various head and image conditions.
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Affiliation(s)
- Won-Joon Lee
- Department of Forensic Medicine Investigation, National Forensic Service Seoul Institute, Seoul, 08036, Korea
| | - Dong-Min Kim
- Forensic Science Division, National Digital Forensic Center, Supreme Prosecutor's Office, Seoul, 06590, Korea
| | - U-Young Lee
- Catholic Institute for Applied Anatomy, Department of Anatomy, College of Medicine, Catholic University of Korea, Seoul, 06591, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, 61186, Korea
| | - Min-Su Kim
- Department of Statistics, Chonnam National University, Gwangju, 61186, Korea
| | - Jong-Ha Hong
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Young-Il Hwang
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, 03080, Korea
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Kim W, Kim HO, Cho JH, Kim JM, Chung HM. 4064Effects of chronic kidney disease on clinical outcomes in patients with peripheral artery disease undergoing endovascular treatment: analysis from the K-VIS ELLA registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4064] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - H O Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J H Cho
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - J M Kim
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - H M Chung
- Kyung Hee University Hospital, Seoul, Korea Republic of
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Kim W, Kim JM, Cho JH, Kim HO, Woo JS, Chung HM. P6400Circadian distribution of acute myocardial infarction in different age groups: sinusoidal function analyses. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6400] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- W Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J M Kim
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - J H Cho
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - H O Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J S Woo
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - H M Chung
- Kyung Hee University Hospital, Seoul, Korea Republic of
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Lim SY, Jiang T, Oh MH, Kook MS, Cho JH, Hwang HS. Cone-beam computed tomography evaluation on the changes in condylar long axis according to asymmetric setback in sagittal split ramus osteotomy patients. Angle Orthod 2018; 87:254-259. [PMID: 28253453 DOI: 10.2319/043016-349] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To determine whether the condylar rotation is affected by asymmetric setback in patients undergoing sagittal split ramus osteotomy. MATERIALS AND METHODS Thirty patients who underwent bilateral sagittal split ramus osteotomy setback surgery were divided into the two groups, symmetric setback and asymmetric setback, according to the right/left difference of setback amount (<2.0, ≥2.0 mm). Condylar long axis changes were evaluated using the three-dimensional superimposition of before and immediately after surgery cone-beam computed tomography volume images. Evaluations were performed separately in lesser setback and greater setback side in patients undergoing asymmetric setback, whereas both side condyles were evaluated together in patients undergoing symmetric setback. Condylar axis changes on axial view were correlated with setback amount or right/left setback difference using Pearson correlation analysis. RESULTS In general, the condylar axis change occurred in a pattern of inward rotation. The condyles in patients undergoing symmetric setback showed 3.4° rotation in average. In case of asymmetric setback, the lesser setback side showed larger value (4.3°) than the greater setback side (2.3°) with a statistical significance. In the correlation analysis, setback amount showed no significant correlation with the condylar axis changes in both groups. However, correlation with right/left setback difference showed a positive correlation in lesser setback side of patients undergoing asymmetric setback. CONCLUSION The findings of this study indicate that large amount of setback alone does not contribute to the change in condylar long axis, but asymmetric setback might cause a change in condylar long axis, particularly on the lesser setback side.
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Oh MH, Kang SJ, Cho JH. Comparison of the three-dimensional structures of mandibular condyles between adults with and without facial asymmetry: A retrospective study. Korean J Orthod 2018; 48:73-80. [PMID: 29564216 PMCID: PMC5854884 DOI: 10.4041/kjod.2018.48.2.73] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 08/10/2017] [Accepted: 09/01/2017] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE This retrospective study compared the three-dimensional (3D) structure of mandibular condyles between adults with and without facial asymmetry, and whether it influences menton deviation. METHODS Sixty adult patients were classified into symmetry and asymmetry groups based on the menton deviation on postero-anterior radiographs. The right/left differences of 3D measurements were compared between the two groups, and measurements were compared separately on the right and left sides. The correlations between menton deviation and the right/left differences were analyzed. RESULTS The mediolateral dimension, neck length, condylar angles to the anteroposterior reference (PO) and midsagittal reference planes, and neck and head volumes showed significantly larger right/left differences in the asymmetry group compared to the symmetry group. Separate comparisons of the right and left sides between the two groups showed that the neck was significantly shorter and neck and head volumes were significantly smaller on the left side, which was deviated side in the asymmetry group. Pearson's correlation analysis showed significant positive correlations of menton deviation with right/left differences in neck length, condylar angle to the PO plane, and neck and head volumes in the asymmetry group. CONCLUSIONS In individuals with facial asymmetry, menton deviation is associated with the right/left differences caused by a smaller condyle on the deviated side, particularly in neck length and neck and head volumes.
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Affiliation(s)
- Min-Hee Oh
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Sung-Ja Kang
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
- 4D Research Institute, Chonnam National University, Gwangju, Korea
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Lee J, Kang HG, Lim TH, Oh J, Cho Y, Cho JH. The Development of Emergency Medicine in South Korea: Academic Productivity in Highly Cited Journals. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791402100402] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction The purpose of this study was to examine the number of publications by South Korean emergency physicians in highly cited journals and the increase in their numbers. It also sought to assess the impact factors of such publications. Methods The present study was a retrospective quantitative literature review of the publications by South Korean emergency physicians from 1996 to 2011 in the category of “emergency medicine” in the science edition of Journal Citation Reports 2011. We analysed the total number of articles published by South Korean emergency physicians and their impact factors. Results Between 1996 and 2011, the number of South Korean board-certified emergency physicians increased from 51 to 958, and 230 articles were published in 14 highly cited journals. The total impact factor (IF) of the original articles published during that period was 227.86, and the mean IF was 1.93. More than 10 articles had been published annually in the past 5 years in highly cited journals and there were over 400 South Korean board-certified emergency physicians. Conclusions Emergency medicine in South Korea started about 20 years ago, but academic productivity, indicated by at least ten articles annually in highly cited journals, was only achieved in the last five years. The mean IF of these articles was similar to that in other highly productive countries. (Hong Kong j.emerg.med. 2014;21:205-212)
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Affiliation(s)
| | | | | | | | - Y Cho
- Hallym University, Kandong Sacred Heart Hospital, Department of Emergency Medicine, College of Medicine, Seoul, Korea
| | - JH Cho
- Kangwon National University, Department of Emergency Medicine, Institute of Medical Sciences, School of Medicine, Kangwon-do, Korea
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Kim SH, Park KN, Kim J, Eun CK, Park YM, Oh MK, Choi KH, Kim HJ, Kim DW, Choo HJ, Cho JH, Oh JH, Park HY. Accuracy of Plain Abdominal Radiography in the Differentiation between Small Bowel Obstruction and Small Bowel Ileus in Acute Abdomen Presenting to Emergency Department. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791101800202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Introduction Our purpose was to evaluate whether plain abdominal radiography (PAR) could accurately differentiate between small bowel obstruction (SBO) and small bowel ileus (SBI) in an emergency setting. We also evaluated the value of known classic signs on the PAR for differentiating between SBO and SBI. Methods This retrospective study included 216 emergency room patients who had small bowel distension (maximal small bowel diameter ≥2.5 cm) on the PAR and who underwent successive abdominal computed tomography. One radiologist and one emergency physician retrospectively reviewed PAR in consensus, unaware of the patients' clinical data; they divided the patients into an SBO group and an SBI group according to the radiographic findings. Presence or numeric values of 10 radiographic signs were also recorded. Final diagnoses of SBO and SBI were established by a combined analysis of medical charts, surgical records, radiographic findings on abdominal computed tomography, and small bowel studies. The differential diagnoses based on PAR and the final diagnoses were compared, and the sensitivity and specificity of PAR were calculated. We also evaluated the differences among 10 radiographic signs between the final SBO and SBI groups. Results Sensitivity and specificity of PAR for SBO were 82.0% and 92.4%, respectively. Among the 10 radiographic signs, all except maximal colon diameter were statistically significant predictors on the final diagnosis. Conclusions PAR is an accurate and effective initial imaging modality for differentiating between SBO and SBI in an emergency setting, and most of the classic radiographic signs have a diagnostic value.
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Affiliation(s)
- SH Kim
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - KN Park
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - J Kim
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - CK Eun
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - YM Park
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - MK Oh
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - KH Choi
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
- Uijeongbu St. Mary's Hospital, Department of Emergency Medicine, The Catholic University of Korea, 65-1 Geumo-dong, Uijeongbu-si, Gyeonggi-do, 480-717, Republic of Korea
| | - HJ Kim
- Uijeongbu St. Mary's Hospital, Department of Emergency Medicine, The Catholic University of Korea, 65-1 Geumo-dong, Uijeongbu-si, Gyeonggi-do, 480-717, Republic of Korea
| | - DW Kim
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - HJ Choo
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - JH Cho
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - JH Oh
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - HY Park
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
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Jung JG, Park JH, Kim SC, Kang KH, Cho JH, Cho JW, Chang NY, Bay RC, Chae JM. Effectiveness of pulsed electromagnetic field for pain caused by placement of initial orthodontic wire in female orthodontic patients: A preliminary single-blind randomized clinical trial. Am J Orthod Dentofacial Orthop 2017; 152:582-591. [DOI: 10.1016/j.ajodo.2017.04.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 04/01/2017] [Accepted: 04/01/2017] [Indexed: 01/13/2023]
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Hong TH, Cho JH, Shin SM, Kim HK, Choi YS, Zo JI, Shim YM, Kim J. F-063EXTENDED SLEEVE LOBECTOMY FOR CENTRALLY LOCATED NON-SMALL CELL LUNG CANCER: A 20-YEAR SINGLE CENTRE EXPERIENCE. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shin S, Choi YS, Cho JH, Kim HK, Kim J, Zo JI, Shim YM. F-072PROGNOSTIC IMPACT OF PATHOLOGIC MICROSCOPIC LYMPHOVASCULAR INVASION IN COMPLETELY RESECTED EARLY STAGE NON-SMALL CELL LUNG CANCER: IMPLICATION TO THE T DESCRIPTOR. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Oh MH, Hwang HS, Lee KM, Cho JH. Cone-beam computed tomography evaluation on the condylar displacement following sagittal split ramus osteotomy in asymmetric setback patients: Comparison between conventional approach and surgery-first approach. Angle Orthod 2017; 87:733-738. [PMID: 28530843 DOI: 10.2319/122316-925.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To compare the condylar displacement following sagittal split ramus osteotomy (SSRO) in asymmetric setback patients between the conventional approach and surgery-first approach and to determine whether the condylar displacement is affected by asymmetric setback in SSRO patients. MATERIALS AND METHODS This was a retrospective study. The subjects consisted of patients with facial asymmetry who underwent SSRO and had cone-beam computed tomography taken before and 1 month after surgery. They were allocated into the conventional (n = 18) and surgery-first (SF) groups (n = 20). Descriptive, independent t-tests and Pearson correlation analysis were computed. RESULTS The amount of condylar displacement in x-, y-, and z-directions and Euclidean distance showed no statistically significant differences between the conventional and SF groups. Comparing the postoperative condylar position with the preoperative position, the condylar displacement occurred in posterior (P < .05) and downward (P < .05) directions in both groups except on the deviated side in the conventional group. The condylar displacement occurred in a posterior (P < .05) direction on the deviated side of the conventional group. However, the condylar displacement in three dimensions showed no statistically significant differences between the two groups. In the correlation analysis, the condylar displacement in both the deviated and contralateral sides showed no significant correlation with asymmetric setback in either group. CONCLUSION The condylar displacement in three dimensions and the distance of condylar displacement in SSRO patients with facial asymmetry showed no significant difference between conventional and SF groups. Condylar displacement was not associated with asymmetric setback.
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Oh SY, Yun W, Lee JH, Lee CH, Kwak WK, Cho JH. Effects of essential oil (blended and single essential oils) on anti-biofilm formation of Salmonella and Escherichia coli. J Anim Sci Technol 2017; 59:4. [PMID: 28239484 PMCID: PMC5316425 DOI: 10.1186/s40781-017-0127-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 07/28/2016] [Accepted: 01/31/2017] [Indexed: 11/21/2022]
Abstract
Background Biofilms were the third-dimensional structure in the solid surface of bacteria. Bacterial biofilms were difficult to control by host defenses and antibiotic therapies. Escherichia coli (E. coli) and Salmonella were popular pathogenic bacteria that live in human and animal intestines. Essential oils are aromatic oily liquids from plant materials and well known for their antibacterial activities. Method This study was conducted to determine effect of essential oil on anti-biological biofilm formation of E. coli and Salmonella strains in in vitro experiment. Two kinds of bacterial strains were separated from 0.2 g pig feces. Bacterial strains were distributed in 24 plates per treatment and each plates as a replication. The sample was coated with a Bacterial biofilm formation was. Result Photographic result, Escherichia coli (E. coli) and Salmonella bacteria colony surface were thick smooth surface in control. However, colony surface in blended and single essential oil treatment has shown crack surface layer compared with colony surfaces in control. Conclusion In conclusion, this study could confirm that essential oils have some interesting effect on anti-biofilm formation of E. coli and Salmonella strains from pig feces.
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Affiliation(s)
- S Y Oh
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763 South Korea
| | - W Yun
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763 South Korea
| | - J H Lee
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763 South Korea
| | - C H Lee
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763 South Korea
| | - W K Kwak
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763 South Korea
| | - J H Cho
- Division of Food and Animal Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763 South Korea
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Kim EK, Cho JH, Jeong AR, Kim EJ, Park DK, Kwon KA, Chung JW, Kim KO, Kim JH, Kim JH, Kim YJ. Anti-inflammatory effects of simvastatin in nonsteroidal anti-inflammatory drugs-induced small bowel injury. J Physiol Pharmacol 2017; 68:69-77. [PMID: 28456771] [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] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 02/24/2017] [Indexed: 06/07/2023]
Abstract
Small bowel injury can occur as the result of a multifaceted process that includes increased acid secretion, generation of reactive oxygen species, and cyclooxygenase inhibition. However, no effective medication for small bowel ulceration is available. Simvastatin is an important lipid-lowering agent with anti-inflammatory activity. We aimed to validate the effects of simvastatin in vitro and in vivo. In presence or absence of simvastatin, IEC-6 small bowel cell line with 50 ng/ml of tumor nectosis factor α (TNF-α) was investigated by western blotting, qRT-PCR, and DCF-DA assay. In addition, an in vivo study of nonsteroidal anti-inflammatory drugs (NSAID)-induced small bowel inflammation was performed using 7-week-old specific-pathogen-free (SPF) male C57BL/6 mice. Simvastatin treatment reduced the mRNA levels of interleukin-6 and interleukin-8 by approximately 50% in TNF-α-stimulated IEC-6 cells. Treatment with a combination of 50 ng/ml TNF-α and μM simvastatin decreased activation of Akt, IκBα, and nuclear factor-κB p65 level in IEC-6 cells. By DCF-DA staining, intracellular reactive oxygen species (ROS) production was increased in TNF-α-stimulated cells, and treatment with simvastatin decreased the level of ROS. In addition, in vivo mouse model of NSAID-induced small bowel inflammation, the administration of simvastatin reduced the number of small bowel hemorrhagic lesions and the level of ROS production as determined by gross examination and 8-hydroxydeoxyguanosine immunohistochemistry of small bowel tissue, respectively. Simvastatin reduced NSAID-induced injuries by both suppression of ROS generation and modulation of inflammatory cytokines in vitro and in vivo. Therefore, simvastatin, an HMG-CoA reductase inhibitor, has potential as a prophylactic and therapeutic agent for NSAID-induced small bowel injury.
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Affiliation(s)
- E K Kim
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea.
- Gachon Medical Research Institute, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - J H Cho
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - A R Jeong
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - E J Kim
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - D K Park
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - K A Kwon
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - J W Chung
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - K O Kim
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - J H Kim
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - J H Kim
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Y J Kim
- Division of Gastroenterology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
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Jang HI, Kim SC, Chae JM, Kang KH, Cho JW, Chang NY, Lee KY, Cho JH. Relationship between maturation indices and morphology of the midpalatal suture obtained using cone-beam computed tomography images. Korean J Orthod 2016; 46:345-355. [PMID: 27896208 PMCID: PMC5118213 DOI: 10.4041/kjod.2016.46.6.345] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/10/2016] [Accepted: 05/30/2016] [Indexed: 11/23/2022] Open
Abstract
Objective The purpose of this study was to determine whether predicting maturation of the midpalatal suture is possible by classifying its morphology on cone-beam computed tomography (CBCT) images and to investigate relationships with other developmental age indices. Methods The morphology of the midpalatal suture was assessed by using CBCT images of 99 patients. Axial plane images of the midpalatal suture were classified into five stages according to the classification scheme. To make the assessment more accurate, the morphology and fusion of the midpalatal suture were additionally investigated on coronal cross-sectional planar images and volume-rendered images. Bone age was evaluated using the hand and wrist method (HWM) and cervical vertebrae method (CVM); dental age (Hellman's index), sex, and chronological age were also assessed. To evaluate relationships among variables, Spearman's rho rank test was performed along with crosstabs using contingency coefficients. Results The HWM and CVM showed strong correlations with the maturation stage of the midpalatal suture, while other indices showed relatively weak correlations (p < 0.01). Through crosstabs, the HWM and CVM showed high association values with CBCT stage; the HWM demonstrated slightly higher values (p < 0.0001). Based on the HWM, the midpalatal suture was not fused until stage 6 in both sexes. Conclusions Among developmental age indices, the HWM and CVM showed strong correlations and high associations, suggesting that they can be useful in assessing maturation of the midpalatal suture.
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Affiliation(s)
- Hong-Ik Jang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Sang-Cheol Kim
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea.; Wonkwang Dental Research Institute, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Jong-Moon Chae
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea.; Department of Orthodontics, Wonkwang University Daejeon Dental Hospital, Daejeon, Korea
| | - Kyung-Hwa Kang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea.; Wonkwang Dental Research Institute, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Jin-Woo Cho
- Department of Orthodontics, Wonkwang University Daejeon Dental Hospital, Daejeon, Korea
| | - Na-Young Chang
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea.; Wonkwang Dental Research Institute, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Keun-Young Lee
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea.; Wonkwang Dental Research Institute, School of Dentistry, Wonkwang University, Iksan, Korea
| | - Jin-Hyoung Cho
- Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea.; Wonkwang Dental Research Institute, School of Dentistry, Wonkwang University, Iksan, Korea
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Chang NY, Park JH, Kim SC, Kang KH, Cho JH, Cho JW, Jang HE, Chae JM. Forced eruption of impacted maxillary central incisors with severely dilacerated roots. Am J Orthod Dentofacial Orthop 2016; 150:692-702. [DOI: 10.1016/j.ajodo.2016.04.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 04/01/2016] [Accepted: 04/01/2016] [Indexed: 11/17/2022]
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