Issue: Vojnosanit Pregl 2016; Vol. 73 (No. 4)

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

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

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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.