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Updated: Nov 29, 2025
A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
Published on: January 28, 2020
Magnetic resonance imaging evaluation of articular disk position after orthognathic surgery with or without
Vanessa A Castro1, Rafael M A Pereira2, Gustavo M Mascarenhas3
1Postgraduate PhD student, School of Dentistry, Federal University of Uberlândia, Uberlândia, MG, Brazil; Private Practitioner, Salvador, BA, Brazil.
Objective:
The aim of this study was to compare the outcomes of 2 surgical treatment options: one for correction of class II malocclusion skeletal deformity and one for pre-existing temporomandibular joint (TMJ) disorders requiring orthognathic surgery (OS) for correction of dentofacial deformity.
Study Design:
This retrospective study evaluated patients who underwent OS with maxillomandibular advancement (MMA) with or without concomitant TMJ surgery for articular disk repositioning (ADR). Patients were divided into 2 groups: group I (MMA) was treated with OS only (18 patients); and group II (MMA-ADR) was treated with OS and concomitant ADR (19 patients). The sample consisted of 74 TMJs (mean patient age 29.86 years).
Results:
In group I, 38.5% of the disks that were originally in normal position became displaced after OS, and 33.3% of displaced disks with reduction became nonreducing after OS. In group II, 78.9% of disks exhibited normal position in the final evaluation, and 97.3% of patients showed improved disk position after surgery. There was significant symptom improvement in all patients in group II, but no significant improvement in group I.
Conclusions:
OS with ADR appears to produce stable and beneficial results in improving symptoms in patients with displaced disk and TMJ pain.
