A Case of Facial Asymmetry and Malocclusion due to Condylar Hyperplasia of the Mandible after Orthognatic Surgery

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A 37-year-old female suffered from facial asymmetry and malocclusion. She had undergone orthognathic surgery (sagittal split ramus osteotomy and genioplasty) at the age of 21 because of facial asymmetry.<BR>Observation of the postoperative course was interrupted. Afterwards, facial asymmetry and the malocclusion were conspicuous, and the patient revisited our department for consultation on March 26, 2003. During the observation period (from March to December), growth of the left condylar process and malocclusion were recognized. Condylectomy was performed by an intraoral ap-proach. The resected specimen showed a thin fibrocartilage layer and dominantly consisted of mature lamellar bone tissue fragments with trabecular architecture.<BR>According to the clinical and histopathological features, the diagnosis was condylar hyperplasia.<BR>Exercise of Mouth-opening exercises by using a mouth gag were performed after the operation, leading to good jaw function.
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