Restored occlusions. Part II: The relationship of clinical and subjective symptoms to varying degrees of TMJ dysfunction.

Fifty subjects restored with fixed restorations were examined by means of pantographic tracings and the PRI in order to determine the prevalence of TMJ dysfunction. In addition to the prevalence of dysfunction, the PRI categorized subjects as to the degree of dysfunction and clinical and subjective symptoms were related to the varying degrees of dysfunction. There were positive relationships (X)2 between the PRI categories and any dysfunction and many of the variables at the 0.1 level. There were positive correlations (Spearman R) at the 0.5 level between PRI categories and any level of TMJ dysfunction and many variables. The absence of clinical symptoms did not always indicate the absence of dysfunction as determined by the PRI.