PMC10235746_01
Depicts preoperative frontal view (a), Lateral profile views (b and c), and occlusion with reduced mouth opening (d)
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On clinical examination, there was the complete absence of mouth opening, a severely retruded mandible, and the absence of TMJ movements on palpation [Figure 1].
Depicts preoperative computed tomography images of the patient
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TMJ ankylosis bilaterally with a retruded mandible with bilaterally enlarged coronoid processes. The posterior airway space was consistently reduced [Figure 2].
Panoramic radiographs during different stages of distraction
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The distractors were retained in the patient thereafter for the period of consolidation [Figure 3].
Intraoperative images showing superior and inferior cuts of double-sliding genioplasty before advancement (a), after advancement and fixation (d), exposed temporomandibular joint (b), and intraoperative mouth opening (c)
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A planned chin advancement of approximately 17 mm was achieved with intraoperative mouth opening of 45 mm [Figure 4].
Lateral cephalograms before and after genioplasty showing a considerable increase in posterior airway space and facial profile
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A satisfactory chin and facial profile were obtained postoperatively with promising soft tissue changes in the chin [Figures 5 and 6].
Postoperative clinical pictures showing improved facial profile and improved mouth opening
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A satisfactory chin and facial profile were obtained postoperatively with promising soft tissue changes in the chin [Figures 5 and 6].