Radiographic cephalometry analysis of condylar position after bimaxillary osteotomy in patients with mandibular prognathism

Nikola D. Miković; Miloš M. Lazarević; Zoran Tatić; Sanja Krejović-Trivić; Milan Petrović; Aleksandar Trivić

doi:10.2298/7318

Nikola D. Miković Clinic of Maxillofacial Surgery, Faculty of Dentistry, University of Belgrade, Belgrade, Serbia
Miloš M. Lazarević Clinic of Maxillofacial Surgery, Faculty of Dentistry, University of Belgrade, Belgrade, Serbia
Zoran Tatić Clinic of Oral Surgery and Implantology, Military Medical Academy, Belgrade, Serbia; Faculty of Medicine of the Military Medical Academy, University of Defence, Belgrade, Serbia
Sanja Krejović-Trivić Clinic of Oral Surgery and Implantology, Military Medical Academy, Belgrade, Serbia
Milan Petrović Clinic of Maxillofacial Surgery, Faculty of Dentistry, University of Belgrade, Belgrade, Serbia
Aleksandar Trivić Clinic of Otorhinolaryngology and Maxillofacial Surgery, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia

DOI: https://doi.org/10.2298/7318

Keywords: prognathism, surgery, oral, postoperative period, cephalometry, temporomandibular joint, centric relation,

Abstract

Background/Aim. Postoperative condylar position is a substantial concern in surgical correction of mandibular prognathism. Orthognathic surgery may change condylar position and this is considered a contributing factor for early skeletal relapse and the induction of temporomandibular disorders. The purpose of this study was to evaluate changes in condylar position, and to correlate angular skeletal measurements following bimaxillary surgery. Methods. On profile teleradiographs of 21 patients with mandibular angular and linear parametres, the changes in condylar position, were measured during preoperative orthodontic treatment and 6 months after the surgical treatment. Results. A statistically significant difference in values between the groups was found. The most distal point on the head of condyle point (DI) moved backward for 1.38 mm (p = 0.02), and the point of center of collum mandibulae point (DC) moved backward for 1.52 mm (p = 0.007). The amount of upward movement of the point DI was 1.62 mm (p = 0.04). Conclusion. In the patients with mandibular prognathism, the condyles tend to migrate upward and forward six months after bimaxillary surgery.

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