Diskectomy in temporomandibular joints with internal derangement: a follow-up study.

OBJECTIVE: To follow up a series of patients treated consecutively who had undergone a diskectomy 2 years previously because of persistent pain and disk displacement in the temporomandibular joint.

STUDY DESIGN: Sixteen subjects rated their current symptoms during 1 week and were systematically examined for signs of temporomandibular disorders clinically and radiographically by independent observers.

RESULTS: Subjectively, all subjects were satisfied with the operation. Five rated their current pain as significant during masticatory function. Some signs of temporomandibular disorders, usually related to function, were registered in all subjects. Postoperative mandibular movements were improved but still below normal range. Signs and symptoms correlated significantly. Surgical complications were nonexistent, but radiographic changes were extensive. Erosion and flattening of the condyle were common.

CONCLUSIONS: It was verified that subjects with persistent pain and disk displacement benefit subjectively and clinically from diskectomy. The radiographic outcomes appear less encouraging. Only prospective, randomized, and controlled studies can eventually clarify the effectiveness of diskectomy in relieving pain caused by displacements in the temporomandibular joint.