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

• Published in: Korean journal of orthodontics (2012) 2022, 52(1), , pp.66-74
• Main Authors: Lim, Seung-Weon, Kim, Minsoo, Hong, Mihee, Kang, Kyung-Hwa, Kim, Minji, Kim, Su-Jung, Kim, Yoon-Ji, Kim, Young Ho, Lim, Sung-Hoon, Sung, Sang Jin, Baek, Seung-Hak, Cho, Jin-Hyoung
• Format: Article
• Language: English
• Subjects: Original; 치의학
• ISSN: 2234-7518; 2005-372X
• DOI: 10.4041/kjod.2022.52.1.66

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. 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. 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%, < 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%, < 0.001) and spacing in the 2J-OGS group (40.4%, < 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; < 0.001) increased the probability of 2J-OGS, while maxillary crowding (OR, 0.672; < 0.05) and normo-divergent pattern (OR, 0.615; < 0.05) decreased the probability of 2J-OGS. 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.