The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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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

  • Lim, Seung-Weon (Division of Orthodontics, Department of Dentistry, Hanyang University Hospital) ;
  • Kim, Minsoo (Department of Statistics, College of Natural Sciences, Chonnam National University) ;
  • Hong, Mihee (Department of Orthodontics, School of Dentistry, Kyungpook National University) ;
  • Kang, Kyung-Hwa (Department of Orthodontics, School of Dentistry, Wonkwang University) ;
  • Kim, Minji (Department of Orthodontics, College of Medicine, Ewha Womans University) ;
  • Kim, Su-Jung (Department of Orthodontics, Kyung Hee University School of Dentistry) ;
  • Kim, Yoon-Ji (Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Kim, Young Ho (Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine) ;
  • Lim, Sung-Hoon (Department of Orthodontics, College of Dentistry, Chosun University) ;
  • Sung, Sang Jin (Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine) ;
  • Baek, Seung-Hak (Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University) ;
  • Cho, Jin-Hyoung (Department of Orthodontics, Chonnam National University School of Dentistry)
  • Received : 2021.04.05
  • Accepted : 2021.08.09
  • Published : 2022.01.25
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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.

Keywords

Acknowledgement

This research was supported by a grant (BCRI20037) of Chonnam National University Hospital Biomedical Research Institute and a grant from the Korea Health Technology R&D Project through the Korea Health Industry Development Institute, funded by the Ministry of Health & Welfare, Republic of Korea (HI18C1638).

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