Andrew Ow1, Lim Kwong Cheung. 1. Senior Resident, Oral and Maxillofacial Surgery, Discipline of Oral and Maxillofacial Surgery, Faculty of Dentistry, Prince Philip Dental Hospital, University of Hong Kong, Hong Kong, China.
Abstract
OBJECTIVE: To conduct a randomized controlled trial comparing the skeletal stability of bilateral sagittal split osteotomy (BSSO) and mandibular distraction ostoegenesis (MDO) for moderate mandibular advancement. STUDY DESIGN:Fourteen class II mandibular hypoplasia patients requiring mandibular advancement between 6 and 10 mm were randomized into 2 groups for either BSSO or MDO. Serial lateral cephalographs were taken 2 weeks, 6 weeks, 12 weeks, 6 months, and 12 months after surgery for the assessment of skeletal stability. The Student t test was used to analyze stability with statistical significance set at P < .05. RESULTS: There was no significant difference (P > .05) in horizontal and vertical skeletal relapse between the 2 groups at every postoperative time period. CONCLUSIONS: Although the MDO group reported less horizontal and vertical skeletal relapse for mandibular advancements between 6 and 10 mm at 1 year, no statistically significance was found between the groups. Other patient-related factors need to be considered when choosing one technique over the other. Copyright 2010 Mosby, Inc. All rights reserved.
RCT Entities:
OBJECTIVE: To conduct a randomized controlled trial comparing the skeletal stability of bilateral sagittal split osteotomy (BSSO) and mandibular distraction ostoegenesis (MDO) for moderate mandibular advancement. STUDY DESIGN: Fourteen class II mandibular hypoplasiapatients requiring mandibular advancement between 6 and 10 mm were randomized into 2 groups for either BSSO or MDO. Serial lateral cephalographs were taken 2 weeks, 6 weeks, 12 weeks, 6 months, and 12 months after surgery for the assessment of skeletal stability. The Student t test was used to analyze stability with statistical significance set at P < .05. RESULTS: There was no significant difference (P > .05) in horizontal and vertical skeletal relapse between the 2 groups at every postoperative time period. CONCLUSIONS: Although the MDO group reported less horizontal and vertical skeletal relapse for mandibular advancements between 6 and 10 mm at 1 year, no statistically significance was found between the groups. Other patient-related factors need to be considered when choosing one technique over the other. Copyright 2010 Mosby, Inc. All rights reserved.
Authors: Alexandre A Franco; Lucia Helena S Cevidanes; Ceib Phillips; Paul Emile Rossouw; Timothy A Turvey; Felipe de Assis R Carvalho; Leonardo K de Paula; Cátia Cardoso A Quintão; Marco Antonio O Almeida Journal: J Oral Maxillofac Surg Date: 2013-06-14 Impact factor: 1.895
Authors: Zongyang Sun; Boon Ching Tee; Kelly S Kennedy; Patrick M Kennedy; Do-Gyoon Kim; Susan R Mallery; Henry W Fields Journal: PLoS One Date: 2013-09-05 Impact factor: 3.240