Comparison of the Effects of Different Fixation Methods on Fragments and Temporomandibular Joint in Sagittal Split Ramus Osteotomy Applied to Patients with Mandibular Asymmetry Using Three-Dimensional Finite Element Analysis

Özlü M.

CYPRUS JOURNAL OF MEDICAL SCIENCES, vol.10, no.1, pp.44-50, 2025 (ESCI, TRDizin)

  • Publication Type: Article / Article
  • Volume: 10 Issue: 1
  • Publication Date: 2025
  • Doi Number: 10.4274/cjms.2024.2024-45
  • Journal Name: CYPRUS JOURNAL OF MEDICAL SCIENCES
  • Journal Indexes: Emerging Sources Citation Index (ESCI), TR DİZİN (ULAKBİM), CABI: Global Health
  • Page Numbers: pp.44-50
  • Yozgat Bozok University Affiliated: Yes

Abstract

BACKGROUND/AIMS: Fixation of the mobilized bone fragments is of importance for the healing of the patients and stabilization of the

osteotomy in the postoperative period. In our study, models with different degrees of asymmetry were fixed with different fixation methods

and the results were evaluated.

MATERIALS AND METHODS: Models with right rotations of 2, 5, and 10 mm were fixed with three bicortical screws and two miniplates with four

monocortical screws, and the results were compared with those of finite element analysis (FEA). Tension and compression stresses in the bone

segments and temporomandibular joint of two different fixation methods were compared.

RESULTS: FEA showed that the tensile and compressive stresses in the buccal, lingual, and temporomandibular discs were higher with bicortical

screws.

CONCLUSION: It was predicted that stabilization problems would increase with increasing motion in sagittal split osteotomy. When selecting the

most stable fixation method, the least stress to the surrounding tissues should be taken into consideration.

Keywords: Three-dimensional finite element analysis, fixation systems, orthognathic surgery, sagittal split ramus osteotomy