Korean J Orthod.  2022 Jan;52(1):66-74. 10.4041/kjod.2022.52.1.66.

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

Affiliations
  • 1Division of Orthodontics, Department of Dentistry, Hanyang University Hospital, Seoul, Korea
  • 2Department of Statistics, College of Natural Sciences, Chonnam National University, Gwangju, Korea
  • 3Department of Orthodontics, School of Dentistry, Kyungpook National University, Daegu, Korea
  • 4Department of Orthodontics, School of Dentistry, Wonkwang University, Iksan, Korea
  • 5Department of Orthodontics, College of Medicine, Ewha Womans University, Seoul, Korea
  • 6Department of Orthodontics, Kyung Hee University School of Dentistry, Seoul, Korea
  • 7Department of Orthodontics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
  • 8Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, Korea
  • 9Department of Orthodontics, College of Dentistry, Chosun University, Gwangju, Korea
  • 10Department of Orthodontics, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, Korea
  • 11Department of Orthodontics, Chonnam National University School of Dentistry, Gwangju, Korea

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.

Keyword

Class III orthognathic surgery; Class III diagnosis; Class III treatment

Figure

  • Figure 1 Frequency of 1J-OGS and 2J-OGS in 10 University Hospitals. AMC, AUDH, EUMC, KHUDH, KUAH, and SNUDH were categorized as the capital region hospitals, while CNUDH, CSUDH, KNUDH, and WUDH were categorized as the provincial region hospitals. 1J-OGS, one-jaw orthognathic surgery; 2J-OGS, two-jaw orthognathic surgery; AMC, Asan Medical Center; AUDH, Ajou University Dental Hospital; EUMC, Ewha University Medical Center; KHUDH, Kyung Hee University Dental Hospital; KUAH, Korea University Anam Hospital; SNUDH, Seoul National University Dental Hospital; CNUDH, Chonnam National University Dental Hospital; CSUDH, Chosun University Dental Hospital; KNUDH, Kyungpook National University Dental Hospital; WUDH, Wonkwang University Dental Hospital.


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