Open AccessUsing the silastic as interpositional material in the management of left temporomandibular joint ankylosis
Author(s) -
WeiChin Chang,
Yen-Ching Chang,
Chi-Kung Lin,
Yuan-Wu Chen
Publication year - 2015
Publication title -
yīxué yánjiū zázhì/journal of medical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.176
H-Index - 12
eISSN - 2542-4939
pISSN - 1011-4564
DOI - 10.4103/1011-4564.167781
Subject(s) - silastic , medicine , ankylosis , temporomandibular joint , condyle , meniscus , dentistry , arthroplasty , surgery , physics , incidence (geometry) , optics
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