Effect of canine guidance on the working condylar path.

The purposes of the study were to compare the relationship of anterior guidance with condylar movement and to analyze the three-dimensional relationship of canine guidance and the working condylar path. The mandibular movements of ten subjects with normal dentitions and no observable temporomandibular joint abnormalities were recorded using an electronic mandibular measuring system capable of measuring six degrees of freedom. Measurements were made employing both canine and clutch guidance. The data were collated and evaluated making use of mathematical modeling techniques. It was shown that the movements of the working condyle were affected by anterior guidance. When canine guidance is not consistent with the working condylar path, there is a sagittal displacement of the working path created to compensate for the lack in harmony.