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CASE REPORT
Year : 2015  |  Volume : 35  |  Issue : 5  |  Page : 226-229

Using the silastic as interpositional material in the management of left temporomandibular joint ankylosis


1 Division of Oral and Maxillofacial Surgery; School of Dentistry, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
2 Department of Pathology, Tri-Service General Hospital, Taipei, Taiwan, Republic of China
3 Division of Family Dentistry and Oral Diagnosis; Division of Oral and Maxillofacial Surgery; School of Dentistry, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan, Republic of China

Correspondence Address:
Yuan-Wu Chen
Department of Oral and Maxillofacial Surgery, Tri-Service General Hospital, No. 325, Cheng-Kung Road, Section 2, Neihu 114, Taipei, Taiwan
Republic of China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1011-4564.167781

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Mandibular condylar trauma is the most common cause of temporomandibular joint (TMJ) ankylosis. The pathogenesis of this condition is typified by fibrous or bony tissue replacement of the two articular surfaces, resulting in an inability to open the mouth. Treatment includes joint interpositional arthroplasty to remove the ankylosed tissue and meniscus. After smoothing the ankylotic joint surface, autogenous or alloplastic material is used to replace the meniscus. We present a case of TMJ ankylosis treated with interpositional arthroplasty and a Silastic graft. The patient suffered joint trauma that was treated with intermaxillary fixation and insufficient instruction for mouth opening exercise. The patient subsequently developed Type II bony ankylosis in left TMJ, which was diagnosed on clinical examination, and computed tomography. Interpositional arthroplasty with a Silastic autopolymerizing membrane was performed through a preauricular approach. Postoperatively, mouth opening improved significantly from an interincisal distance of 3-28 mm. Surgical and physical therapy accomplished good wound healing without re-ankylosis after two years of follow-up.


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