Positional changes and stability of bone segments during simultaneous bilateral mandibular lengthening and widening by distraction

M. Gonzalez, W. H. Bell, C. A. Guerrero, P. H. Buschang, M. L. Samchukov

Research output: Contribution to journalArticle

8 Scopus citations


The purpose of this study was to analyse the skeletal changes and stability of the distracted segments during and after simultaneous widening and bilateral lengthening of the mandible in baboons with a miniaturized intraoral bone-borne osteodistractor. Distraction appliances were activated 5 days after vertical posterior body and midsymphyseal osteotomies at a rate of 0.9 mm/day for 10 days. The appliances were then stabilized for a period of 8 weeks, after which the animals were killed. The distraction gaps and gingival tissues were studied clinically and on standardized radiographs. The proportional movement of the distracted segments that we found supports the clinical use of the miniaturized intraoral bone-borne distraction appliance to widen and lengthen the mandible selectively. It also supports the concept of positioning the mandibular osteodistractors parallel to the common vector of distraction, which should parallel the corrected maxillary occlusal plane.

Original languageEnglish (US)
Pages (from-to)169-178
Number of pages10
JournalBritish Journal of Oral and Maxillofacial Surgery
Issue number3
StatePublished - Jan 1 2001


ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

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