Bilateral sagittal split osteotomies and mandibular distraction osteogenesis: a randomized controlled trial comparing skeletal stability

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 advan...

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Published in:Oral surgery, oral medicine, oral pathology, oral radiology and endodontics oral medicine, oral pathology, oral radiology and endodontics, 2010, Vol.109 (1), p.17-23
Main Authors: Ow, Andrew, BDS, MDS, FRACDS, MOSRCS, AdvDipOMS, Cheung, Lim Kwong, BDS, FFDRCS, FRACDS, FRACDS(OMS), PhD
Format: Article
Language:English
Subjects:
Adolescent
Adult
Biological and medical sciences
Cephalometry
Dentistry
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Malocclusion, Angle Class II - surgery
Mandible - abnormalities
Mandible - surgery
Mandibular Advancement - methods
Medical sciences
Micrognathism - surgery
Orthopedic surgery
Osteogenesis, Distraction
Osteotomy
Otorhinolaryngology. Stomatology
Secondary Prevention
Skeleton and joints
Surgery
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Vertebrates: osteoarticular system, musculoskeletal system
Young Adult
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Summary: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.
ISSN:1079-2104
1528-395X
DOI:10.1016/j.tripleo.2009.07.030