This study describes the treatment of a patient with traumatic occlusion and pain syndrome of the left temporo-mandibular joint. Traumatic occlusion was diagnosed by clinical examination, i.a. due to the lack of mutual canine guidance. Diagnosis was enhanced with the use of a T-Scan III System. Selective teeth grinding and rebuilding the canines with composite material were done during treatment. After 3 and 6 months the effects of treatment were evaluated. Pain does not occur any more and the reconstructed occlusal conditions remain normal.

Key words: traumatic occlusion, T-Scan III, , mutual canine guidance.