USE OF SILASTIC AS INTERPOSITIONAL MATERIAL IN THE MANAGEMENT OF UNILATERAL TEMPOROMANDIBULAR JOINT ANKYLOSIS
Abstract
Background: Ankylosis is a very common condition developed mainly after damage tomandibular condyles or temporomandibular joint (TMJ) at a growing age. Different autogenousand alloplastic interpositional materials have been attempted after the resection of the ankyloticbone to achieve desirable results. This condition is relatively common in Pakistan. We treatedTMJ ankylosis with alloplastic medical grade silicone “silastic” interpositional arthroplasty. Eightjoints accompanied ipsilateral or contralateral coronoidectomy to achieve desirable results.Method: All patients were presented at Punjab Dental Hospital Lahore. Sixty-one joints withunilateral TMJ ankylosis were underwent surgery after careful examination and final radiographicconfirmation. The preoperative CT scan was also performed in few patients. Results: Thepostoperative measurements of the interincisal opening with lateral and protrusive jaw movementswere criteria for success of surgery. The lateral and protrusive jaw movements were assessed asexcellent, good and poor. Less than 25 mm interincisal opening was considered as poor jawopening. Conclusion: The overall success rate was 98.4 % with 84 % desirable interincisal jawopening. Less than 5 % patients were observed with poor jaw opening. The immediate latecomplications were transient and were included oedema, weakness of a branch of the facial nerveon the operated side. Two implants were infected along with one wire in the first month of surgeryand were removed under local anaesthesia without further complication.Key words: Ankylosis, silastic, interpositional material, arthroplasty, coronoidectomy and jawmovements.References
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