Document Detail

Midfacial changes through distraction osteogenesis using a rigid external distraction system with retention plates in cleft lip and palate patients.
MedLine Citation:
PMID:  20417011     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The purpose of this study was to investigate the changes in and stability of the maxilla and soft tissue profile achieved after the application of distraction osteogenesis (DO) by use of rigid external distraction (RED) with a retention plate system in unilateral cleft lip and palate (UCLP) adult patients. We compared 2 treatment methods in the management of maxillary hypoplasia: Le Fort I osteotomy and DO. MATERIALS AND METHODS: Six UCLP adult patients who underwent treatment with the RED retention plate system were examined (DO group). Changes in the positions of soft and hard tissue landmarks were calculated from lateral cephalograms taken before distraction, at the removal of the halo, and 1 year after surgery and were compared with those in 7 other UCLP patients who underwent Le Fort I osteotomy (LF1 group). RESULTS: The mean maxillary advancement was significantly larger in the DO group than in the LF1 group after distraction. During the follow-up period, the relapse rate of the maxilla was significantly smaller in the DO group. An undesirable labial inclination of the upper incisors was found in the LF1 group, which may have been due to relapse. The DO group tended to have a higher soft tissue-to-hard tissue anterior movement ratio from the time of distraction to follow-up. CONCLUSIONS: The RED retention plate system improved the midfacial profile by advancement of soft and hard tissue and minimized the risk of injury to the upper lip. Using the RED system with retention plates prevented the undesirable labial inclination of upper incisors that was found in the LF1 group.
Takayoshi Daimaruya; Yoshimichi Imai; Shoko Kochi; Masahiro Tachi; Teruko Takano-Yamamoto
Publication Detail:
Type:  Controlled Clinical Trial; Journal Article     Date:  2010-04-22
Journal Detail:
Title:  Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons     Volume:  68     ISSN:  1531-5053     ISO Abbreviation:  J. Oral Maxillofac. Surg.     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-21     Completed Date:  2010-07-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8206428     Medline TA:  J Oral Maxillofac Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1480-6     Citation Subset:  AIM; D; IM    
Copyright Information:
Copyright 2010 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.
Department of Orthodontics and Dentofacial Orthopedics, Tohoku University School of Dentistry, Aoba-ku, Sendai, Japan.
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MeSH Terms
Bone Plates
Cleft Lip / complications,  rehabilitation,  surgery*
Cleft Palate / complications,  rehabilitation,  surgery*
External Fixators*
Face / anatomy & histology
Facial Asymmetry / etiology,  surgery
Functional Laterality
Jaw Fixation Techniques
Maxilla / abnormalities,  surgery*
Maxillofacial Development
Orthognathic Surgical Procedures / instrumentation,  methods*
Osteogenesis, Distraction / instrumentation*,  methods
Osteotomy / methods
Treatment Outcome
Young Adult

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

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