Home Bratislava Medical Journal 2020 Bratislava Medical Journal Vol.121, No.6, p.379–385,2020

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Published Monthly, in English
Founded: 1919
ISSN 0006-9248
(E)ISSN 1336-0345

Impact factor 1.564


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Bratislava Medical Journal Vol.121, No.6, p.379–385,2020

Title: Condylar position and mandibular function after bilateral sagittal split osteotomy
Author: D. Hirjak, B. Dvoranova, J. P. Reyneke, M. Machon, A. Neff

Abstract: AIM: The purpose of this retrospective study was to perform an evaluation of postoperative positional changes of the condyle and mandibular function after bilateral sagittal split osteotomy (BSSO) with manual proximal segment positioning.
PATIENTS: 45 patients were divided into the 2 groups ‒ G1 (advancement ‒ 14 patients) and G2 (setback – 31 patients). Rigid internal fixation screws were utilized in all cases. Inclusion criteria were only BSSO, no TMJ symptoms preoperatively and age 18 or older.
RESULTS: The differences between pre- and postoperative condyle position were evaluated using measurements taken from preoperative CT scans and compared to CT scans made a minimum of 6 months postoperatively. The positional changes in both the axial and sagittal planes were measured and compared. The recovery of mandibular function was evaluated by measuring maximal interincisal opening (MIO). The results revealed that condylar positional changes after BSSO in both groups were minimal and not significantly different for all three dimensions measured. The recovery of mandibular function was faster in the group G2 than in the group G1. Mandibular function reached almost preoperative level in 6-12 months postoperatively in both groups.
CONCLUSION: The results demonstrated that following BSSO, only insignificant condylar displacement and functional changes occurred within 6 to 12 months postoperatively (Tab. 4, Fig. 2, Ref. 47).

Keywords: condylar position, bilateral sagittal split osteotomy (BSSO), mandibular function, condylar sag, temporomandibular joint (TMJ)
Published online: 31-May-2020
Year: 2020, Volume: 121, Issue: 6 Page From: 379, Page To: 385

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