alexa Skeletal stability and complications of bilateral sagittal split osteotomies and mandibular distraction osteogenesis: an evidence-based review.
Surgery

Surgery

Reconstructive Surgery & Anaplastology

Author(s): Ow A, Cheung LK

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Abstract PURPOSE: To provide an evidence-based review comparing the skeletal stability and complications of bilateral sagittal split osteotomies (BSSOs) and mandibular distraction osteogenesis (MDO) in the treatment of mandibular hypoplasia. MATERIALS AND METHODS: A Medline search from January 1957 to December 2007 was performed wherein articles were retrieved on the basis of a set of inclusion and exclusion criteria. Data on mean skeletal stability and complications for the 2 techniques were retrieved from these articles. RESULTS: Based on the articles about stability, patients undergoing BSSO or MDO with an advancement or lengthening between 6 and 10 mm showed a similar mean skeletal relapse of 15.0\% and 17.1\%, respectively, within postoperative months 6 to 12. Greater skeletal relapse was reported for BSSO patients with high mandibular plane angles compared with normal mandibular plane angle patients (29.6\% vs 11.3\%). Based on the articles about complications, patients who underwent MDO showed a lower incidence of persistent inferior alveolar nerve disturbance (2.9\%) and condylar resorption (1.4\%) compared with BSSO patients, in whom the incidence of these conditions was 27.8\% and 6.1\%, respectively. CONCLUSION: Both BSSO and MDO showed similar relapse rates for mandibular advancements between 6 and 10 mm. Both techniques may also share similar risk factors for skeletal relapse. BSSO has a higher incidence of persistent neurosensory disturbances and condylar resorption than MDO. Randomized controlled trials of these 2 techniques are still lacking. This article was published in J Oral Maxillofac Surg and referenced in Reconstructive Surgery & Anaplastology

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