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Revista Española de Cirugía Oral y Maxilofacial

On-line version ISSN 2173-9161Print version ISSN 1130-0558

Abstract

AMARISTA-ROJAS, Félix-José et al. Postoperative skeletal stability in conventional bimaxillary orthognathic surgery vs rotation of the maxillomandibular complex. Rev Esp Cirug Oral y Maxilofac [online]. 2019, vol.41, n.1, pp.17-25. ISSN 2173-9161.  http://dx.doi.org/10.20986/recom.2019.1031/2019.

Introduction:

Postoperative skeletal stability in orthognathic surgery has been evaluated over time, several authors have reported a decrease of it in movements of the jaws occasionally used in cases of alteration of the maxillo-mandibular complex. The aim of the present study was to compare the postoperative skeletal stability of conventional bimaxillary orthognathic surgery versus bimaxillary orthognathic surgery with rotation of the maxillo-mandibular complex in patients undergoing orthognathic surgery at the Oral and Maxillofacial Surgery Service of the Central Military Hospital of Bogotá between January 2012 until July 2016.

Materials and methods:

A retrospective study was conducted. We performed a cephalometric analysis to compare the skeletal stability between patients with conventional bimaxillary orthognathic surgery versus bimaxillary orthognathic surgery patients with maxillo-mandibular alteration during 3 moments: before surgery (T1), right after the surgery (T2), at least 6 months after surgery (T3).

Results:

A cohort of 45 patients undergoing conventional bimaxillary orthognathic surgery or bimaxilar orthognathic surgery with rotation of the maxillo-mandibular complex was obtained. Most of the measurements showed that there is no significant difference in long-term stability in both groups.

Conclusions:

Orthognathic surgery with rotation of the maxillo-mandibular complex both clockwise and counter-clockwise is a stable procedure when rigid internal fixation is used, when the temporomandibular joints (TMJs) are healthy and stable and when rotation is performed at a point through the mandibular condyle.

Keywords : Orthognathic surgery; occlusal plane alteration; counterclockwise rotation; clockwise rotation.

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