Yoon Jeong Choi1, Jeong Eun Chang2, Chooryung J Chung2, Ji Hyun Tahk3, Kyung-Ho Kim4. 1. Department of Orthodontics, Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea. 2. Department of Orthodontics, Gangnam Severance Dental Hospital, Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea. 3. Harvard School of Dental Medicine, Harvard University, Boston, MA. 4. Department of Orthodontics, Gangnam Severance Dental Hospital, Institute of Craniofacial Deformity, College of Dentistry, Yonsei University, Seoul, Korea. Electronic address: khkim@yuhs.ac.
Abstract
INTRODUCTION: We investigated the long-term success of orthopedic treatment in skeletal Class III malocclusions, established a model to predict its long-term success, and verified previously reported success rates and prediction models. METHODS: Fifty-nine patients who underwent successful facemask treatment and were followed until growth completion were evaluated. After completion of growth, the patients were divided into successful and unsuccessful groups according to overjet, overbite, and facial profile. Pretreatment cephalometric measurements were compared between groups, and logistic regression analysis was used to identify the predictors of long-term success. Four previously published articles were selected to verify the success rate and predictability of the prediction models with regard to our patient sample. RESULTS: The treatment success rate was 62.7%. The AB-mandibular plane angle, Wits appraisal, and the articular angle were identified as predictors. The success rates differed according to success criteria and patient characteristics. The prediction models proposed by the 4 previous studies and our study showed similar predictabilities (61.0%-64.4%) for our patient sample. The predictability for the unsuccessful group was low. CONCLUSIONS: Our results suggest that no particular method or factor can predict the long-term success of orthopedic treatment for skeletal Class III malocclusion.
INTRODUCTION: We investigated the long-term success of orthopedic treatment in skeletal Class III malocclusions, established a model to predict its long-term success, and verified previously reported success rates and prediction models. METHODS: Fifty-nine patients who underwent successful facemask treatment and were followed until growth completion were evaluated. After completion of growth, the patients were divided into successful and unsuccessful groups according to overjet, overbite, and facial profile. Pretreatment cephalometric measurements were compared between groups, and logistic regression analysis was used to identify the predictors of long-term success. Four previously published articles were selected to verify the success rate and predictability of the prediction models with regard to our patient sample. RESULTS: The treatment success rate was 62.7%. The AB-mandibular plane angle, Wits appraisal, and the articular angle were identified as predictors. The success rates differed according to success criteria and patient characteristics. The prediction models proposed by the 4 previous studies and our study showed similar predictabilities (61.0%-64.4%) for our patient sample. The predictability for the unsuccessful group was low. CONCLUSIONS: Our results suggest that no particular method or factor can predict the long-term success of orthopedic treatment for skeletal Class III malocclusion.
Authors: Natalia Tejedor; Conchita Martín; José Antonio Alarcón; María Dolores Oteo-Calatayud; Juan Carlos Palma-Fernández Journal: Prog Orthod Date: 2021-06-21 Impact factor: 2.750