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Type: Journal article
Title: The effect of autogenous costochondral grafts on temporomandibular joint fibrous and bony ankylosis: A preliminary experimental study
Author: Matsuura, H.
Miyamoto, H.
Kurita, K.
Goss, A.
Citation: Journal of Oral and Maxillofacial Surgery, 2006; 64(10):1517-1525
Publisher: W B Saunders Co
Issue Date: 2006
ISSN: 0278-2391
Statement of
Hiroaki Matsuura, Hizuru Miyamoto, Kenichi Kurita and Alastair N. Goss
Abstract: <h4>Purpose</h4>The purpose of this study was to test the functional and histologic fate of costochondral grafts (CG) in temporomandibular joint (TMJ) reconstruction for unilateral ankylosis in the sheep.<h4>Materials and methods</h4>Five pure-bred adult Merino sheep were used. Ankylosis was induced by articular damage, disc removal, and placement of a bone graft. At 3 months, a gap arthroplasty was performed with a CG from the thirteenth rib. The sheep were sacrificed 3 months after CG reconstruction. The range of jaw movements were recorded at first operation, at lysis of ankylosis, and at sacrifice. The joints were examined radiologically, macroscopically, and histologically.<h4>Results</h4>All sheep showed a decrease in masticatory function, as shown by weight loss and decreased jaw opening, during the ankylosis period. On release, they regained weight and increased the range of jaw movement. Histologically, the joint space was filled with fibrous tissue. However, the partial spaces around the CG head were covered by fibrous tissue and/or fibrous cartilage.<h4>Conclusions</h4>This study shows that, when CGs are used with a gap arthroplasty in a fibrous and bony ankylosed TMJ, masticatory function is restored.
Keywords: Cartilage
Temporomandibular Joint
Sheep, Domestic
Temporomandibular Joint Disorders
Range of Motion, Articular
Bone Transplantation
Analysis of Variance
Recovery of Function
Description: Copyright © 2006 American Association of Oral and Maxillofacial Surgeons Published by Elsevier Inc.
DOI: 10.1016/j.joms.2006.06.256
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Dentistry publications

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