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Comparison of the bite force and occlusal contact area of the deviated and non-deviated sides after intraoral vertical ramus osteotomy in skeletal Class III patients with mandibular asymmetry: Two-year follow-up

 Hyejin Kwon  ;  Sun-Hyung Park  ;  Hoi-In Jung  ;  Woo-Chan Hwang  ;  Yoon Jeong Choi  ;  Chooryung Chung  ;  Kyung-Ho Kim 
 KOREAN JOURNAL OF ORTHODONTICS, Vol.52(3) : 172-181, 2022-05 
Journal Title
Issue Date
Asymmetry ; Bite force ; Class III orthognathic surgery ; Occlusal contact area
Objective: The objectives of this study were to compare the time-dependent changes in occlusal contact area (OCA) and bite force (BF) of the deviated and non-deviated sides in mandibular prognathic patients with mandibular asymmetry before and after orthognathic surgery and investigate the factors associated with the changes in OCA and BF on each side.

Methods: The sample consisted of 67 patients (33 men and 34 women; age range 15-36 years) with facial asymmetry who underwent 2-jaw orthognathic surgery. OCA and BF were taken before presurgical orthodontic treatment, within 1 month before surgery, and 1 month, 3 months, 6 months, 1 year, and 2 years after surgery. OCA and BF were measured using the Dental Prescale System.

Results: The OCA and BF decreased gradually before surgery and increased after surgery on both sides. The OCA and BF were significantly greater on the deviated side than on the non-deviated side before surgery, and there was no difference after surgery. According to the linear mixed-effect model, only the changes in the mandibular plane angle had a significant effect on BF (p < 0.05).

Conclusions: There was a difference in the amount of the OCA and BF between the deviated and non-deviated sides before surgery. The change in mandibular plane angle affects the change, especially on the non-deviated side, during the observation period.
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2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Preventive Dentistry and Public Oral Health (예방치과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Ho(김경호) ORCID logo https://orcid.org/0000-0002-8154-2041
Park, Sun Hyung(박선형) ORCID logo https://orcid.org/0000-0002-5293-875X
Chung, Chooryung J.(정주령) ORCID logo https://orcid.org/0000-0001-9399-7193
Jung, Hoi In(정회인) ORCID logo https://orcid.org/0000-0002-1978-6926
Choi, Yoon Jeong(최윤정) ORCID logo https://orcid.org/0000-0003-0781-8836
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