Document Detail

Assessment of the relationship between the recovery of maximum mandibular opening and the maxillomandibular fixation period after orthognathic surgery.
MedLine Citation:
PMID:  18280381     Owner:  NLM     Status:  MEDLINE    
PURPOSE: The purpose of this study was to evaluate the differences in the recovery of maximum mandibular opening (MMO), and the relationship between MMO and the maxillomandibular fixation (MMF) period after sagittal split ramus osteotomy (SSRO) and intraoral vertical ramus osteotomy (IVRO), with and without Le Fort I osteotomy. PATIENTS AND METHODS: Sixty-eight patients with diagnosed mandibular prognathism with or without asymmetry were divided into 4 groups (SSRO, IVRO, SSRO with Le Fort I osteotomy, and IVRO with Le Fort I osteotomy). MMO and the MMF period were measured preoperatively and at 1, 3, 6, 12, and 18 months after surgery. The differences among surgical procedures and the relationship between MMO and the MMF period were examined statistically. RESULTS: In relation to time-dependent changes in MMO, there were no significant differences among the groups. There were significant positive correlations between MMO and the MMF period from 1 month to 6 months after surgery. However, there were no significant correlations at 12 and 18 months after surgery. CONCLUSION: This study suggests that there were no significant differences between single-jaw surgery and double-jaw surgery in terms of postoperative time-dependent changes in the recovery of MMO. However, the MMF period was associated with the recovery of MMO.
Koichiro Ueki; Kohei Marukawa; Yukari Hashiba; Kiyomasa Nakagawa; Kagan Degerliyurt; Etsuhide Yamamoto
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons     Volume:  66     ISSN:  1531-5053     ISO Abbreviation:  J. Oral Maxillofac. Surg.     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-02-18     Completed Date:  2008-03-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8206428     Medline TA:  J Oral Maxillofac Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  486-91     Citation Subset:  AIM; D; IM    
Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Kanazawa University, Kanazawa, Japan.
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MeSH Terms
Analysis of Variance
Internal Fixators
Jaw Fixation Techniques* / instrumentation
Mandible / physiopathology*,  surgery
Maxilla / physiopathology*,  surgery
Osteotomy / adverse effects,  instrumentation,  methods*
Osteotomy, Le Fort / adverse effects,  instrumentation,  methods
Prognathism / surgery*
Range of Motion, Articular / physiology
Recovery of Function / physiology
Regression Analysis
Retrospective Studies
Temporomandibular Joint / physiopathology
Time Factors
Treatment Outcome
Vertical Dimension

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

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