Long-term results following surgical treatment of internal derangement of the temporomandibular joint.

The long-term results achieved in 31 joints by means of discoplasty or (temporary) implantation of silastic for treatment of internal derangements are presented. These data support the philosophy of preserving the disc whenever possible. If, however, discectomy is inevitable this fibrous plate should be replaced. Interposition of a sheet of silastic for a period of 3-6 months has proven very useful as it has in surgery for ankylosis. Silastic induces formation of a scar located between fossa and condyle which is necessary for the preservation of both rotational and translatory movements. Our postoperative results have been stable for many years and the disadvantages noted by other authors have not been found in these patients.