Document Detail

Two-step transport-disk distraction osteogenesis in reconstruction of mandibular defect involving body and ramus.
MedLine Citation:
PMID:  20430585     Owner:  NLM     Status:  MEDLINE    
One-step transport-disk distraction osteogenesis (TDDO) is effective for repairing segmental mandibular defects. The authors studied whether it was effective for reconstructing angled large mandibular defects using a two-step TDDO procedure in seven patients suffering from neoplasm. In the two-step TDDO procedure, the first distraction (horizontal distraction) was initiated immediately after mandibulectomy, aimed at restoring the mandibular body. It was followed by the second distraction, which was obliquely vertical and aimed at restoring the height of the ramus. The distraction rate was set at twice 0.4mm/day. The treatment lasted for 14-18 months. The horizontal distraction length ranged from 48 to 55mm, and the vertical one from 33 to 43mm, with full ossification in the distraction area. No obvious shift of mandible, malocclusion or mouth opening limitation was observed. Patients had a regular diet and spoke clearly. In conclusion, the two-step TDDO is still an option for the reconstruction of large angled mandibular defects when patients are prudently selected, despite the long treatment period required.
J Chen; Y Liu; F Ping; S Zhao; X Xu; F Yan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-28
Journal Detail:
Title:  International journal of oral and maxillofacial surgery     Volume:  39     ISSN:  1399-0020     ISO Abbreviation:  Int J Oral Maxillofac Surg     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-14     Completed Date:  2010-09-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8605826     Medline TA:  Int J Oral Maxillofac Surg     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  573-9     Citation Subset:  D; IM    
Department of Oral and Maxillofacial Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R.China.
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MeSH Terms
Ameloblastoma / rehabilitation,  surgery
Bony Callus / physiology
External Fixators
Fibroma, Ossifying / rehabilitation,  surgery
Mandible / surgery*
Mandibular Neoplasms / rehabilitation*,  surgery
Models, Anatomic
Oral Surgical Procedures / methods*
Osteogenesis, Distraction / instrumentation,  methods*
Reconstructive Surgical Procedures / methods*
Recovery of Function
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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