Bimaxillary Distraction for Hemifacial Microsomia-A Retrospective Study on 6 Patients -

摘要

This is a retrospective evaluation of the effects of bimaxillary distraction on hard and soft tissue changes in 6 patients with hemifacial microsomia.Hemifacial microsomia is a congenital condition that induces asymmetric growth in both hard and soft tissues. The clinical features include mandibular hypoplasi,facial asymmetry, occlusal canting as well as soft tissue deficiency, which would be more evident after growth. Surgical correction using bimaxillary osteotomy with bone grafting would usually pose instability and additional donor site morbidity The use of bimaxillary distraction technique in adults with hemifacial microsomia had been introduced by Ortiz Monasterio et al. since 1997, In Hong Kong, a protocol of bimaxillary distraction had been employed on patients with hemifacial microsomia and severe occlusal canting since 1999. The objective of this study is to assess the long term effect of bimaxillary distraction in terms of hard and soft tissue stability.