Abstract
The purpose of this article is to review the literature on the relationship between occlusal
discrepancies and temporomandibular disorders (TMD) and to summarize the guidelines of treating
TMD by prosthetic rehabilitation.
To date, the relationship between occlusal condition and TMD has not been confirmed, although
there is a current trend toward making a weak correlation between occlusal interference and TMD.
Furthermore, several types of occlusal discrepancies have been considered as variable features
of the norm. But unstable occlusion in the intercuspal position may cause TMD.
In cases of restored dentition, the problem is probably different and iatrogenic TMD are not rare.
Namely, malformed occlusal surfaces, defects in anterior guidance, occlusal curvature, and
vertical dimension may lead to some TMD trouble.
According to these recent concepts the treatment modalities of TMD have been changed.
Conservative treatments such as counseling, behavioral modification, physical therapy, pharmacotherapy,
and interocclusal appliances should be the first choice, and treatments that
lead to drastic changes of occlusion are not recommended.
