The validity of temporomandibular joint radiographs using the head positioner.

1. TMJ radiographs made using the head positioner provide a valuable adjunct to diagnosis and treatment planning for patients with MPD syndrome. 2. Where extensive restorative procedures are anticipated, TMJ radiographs can be useful before embarking on a treatment plan and in documenting the postoperative results. 3. Bilateral condylar symmetry is a reasonable objective of extensive restorative dentistry. 4. Radiographic retrusion is more frequently accompanied by signs and symptoms than bilateral condylar symmetry and protrusion.