Document Detail

Condylar changes after contralateral mandibular osteotomy in the rabbit.
MedLine Citation:
PMID:  10870756     Owner:  NLM     Status:  MEDLINE    
Following orthognathic surgery undesirable changes in the temporomandibular joints (TMJs) are noted sometimes. Altered stress on the condyle and surrounding tissue frequently causes morphological changes in the TMJ. The purpose of the present study was to assess these morphologic changes in a rabbit following mandibular osteotomy and the resulting mandibular body rotation. Adult male Japanese white rabbits (3 kg, 12-16 weeks old) were applied in this study. An experimental mandibular osteotomy was performed on the right side of the body of the mandible. The surgery includes vertical mandibular body osteotomy 5 mm in width after masseter muscle reflection. Then the anterior and posterior osseous segments were fixed with wire at previously made holes. As a result, the condylar medio-lateral width on the contralateral (left) side was significantly larger than that of the ipsilateral side 2 weeks postoperatively (p < 0.05). There were significant differences in the angle between the right and the left condylar heads 4 weeks postoperatively (p < 0.05). The present experimental study demonstrated morphological changes in the contralateral TMJ caused by unilateral mandibular osteotomy. Postoperative morphological changes implied that there is a process of biological adaptation in the rabbit TMJ.
K Ueki; K Nakagawa; S Takatsuka; E Yamamoto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cranio-maxillo-facial surgery : official publication of the European Association for Cranio-Maxillo-Facial Surgery     Volume:  27     ISSN:  1010-5182     ISO Abbreviation:  J Craniomaxillofac Surg     Publication Date:  1999 Dec 
Date Detail:
Created Date:  2000-07-25     Completed Date:  2000-07-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8704309     Medline TA:  J Craniomaxillofac Surg     Country:  SCOTLAND    
Other Details:
Languages:  eng     Pagination:  373-82     Citation Subset:  D; IM    
Department of Oral and Maxillofacial Surgery, School of Medicine, Kanazawa University, Japan.
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MeSH Terms
Adaptation, Physiological
Bone Wires
Cartilage / pathology
Cartilage, Articular / pathology
Incisor / pathology
Jaw Fixation Techniques / instrumentation
Mandible / pathology,  surgery*
Mandibular Condyle / pathology*,  physiopathology
Masseter Muscle / surgery
Maxilla / pathology
Stress, Mechanical
Temporomandibular Joint / pathology,  physiopathology

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