Effects of surgical factors on the outcomes of zygoma reduction malarplasty: a quantitative computed tomography study
10.1186/s40902-023-00371-z
- Author:
Jong Chul PARK
1
Author Information
1. Wonjin Dental Clinic, Pagoda Tower 1306 6 Seocho‑dong Seocho‑gu, Seoul, South Korea
- Publication Type:RESEARCH
- From:Maxillofacial Plastic and Reconstructive Surgery
2023;45(1):3-
- CountryRepublic of Korea
- Language:English
-
Abstract:
Background:Malarplasty is widely performed for zygoma reduction. The effects of body segmentation, plate bending, and postoperative arch location on zygomatic movement have not been analyzed using computed tomography (CT).
Results:We quantitatively analyzed the effects of surgical factors on zygomatic movements via superimposition of preoperative and postoperative CT images using three-dimensional software. Our results showed that segmentation had the most significant effect on the horizontal reduction of malar eminence (β = 0.593, r = 0.696, adjusted r2 0.479, F = 79.595; p < 0.001). In addition, upward and posterior arch movements had significant effects on the anteriorand posterior movements of the eminence (β = − 0.379 for vertical arch movement, β = 0.324 for arch setback, r = 0.603, adjusted r2 = 0.352, F = 31.943; p < 0.001). The major factors that influenced inward arch movement at thecoronoid process included segmentation and inward movement at the arch osteotomy site. To prevent interference of the coronoid process and arch, surgeons should pay attention to the degree of segmentation (β = 0.349) and inward movement at the arch osteotomy site (β = 0.494; r = 0.688, adjusted r2 = 0.464, F = 50.412; p < 0.001).
Conclusions:Surgical factors related to malarplasty affect the movement of specific parts of the zygoma. In addition, accurate application is possible by considering the anatomical structure of the application area when using the bending plate.
