J Med Assoc Thai 2001; 84 (6):811

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Mandibular Distraction Osteogenesis in Unilateral Craniofacial Microsomia : Preliminary Report
Mahatumarat C Mail, Chokrungvaranont P , Rojvachiranonda N

At present, Ilizarov's distraction principle becomes applicable in craniofacial surgery. We
would like to present a report of mandibular lengthening by distraction osteogenesis that has been
performed in 4 Thai children with unilateral craniofacial microsomia in King Chulalongkom Memo-
rial hospital from 1996 to 1997. The distraction process was composed of latency, distraction, and
consolidation phases. After the latency period, the distraction was performed by a patient's family
member at home at the rate of 1 millimeter per day. Facial asymmetry and malocclusion were
improved in all cases after the process was completed. No complication was experienced. No
relapse or complication was detected after a mean follow-up period of 99.5 weeks. However, more
cases and longer follow-up are needed before any conclusion can be made.
Key word: Mandibular Lengthening, Distraction, Osteogenesis, Ilizarov, Hemifacial, Craniofacial
Microsomia

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