Is the Condylar Path Actually Fixed?

Abstract

An imaginary lateral incisal path computed by means of the kinematic formulae for mandibular movement derived by the authors^{8, 9)}, using measured condylar path and angle of hinge rotation data and assuming that the working condyle travels straight laterally on the intercondylar axis, was called“neutral line”. Correlation between the amounts of sagittal deviations of measured lateral incisal paths from their neutral lines and the sagittal displacements of working condylar path were tested. The correlation coefficients between the two was larger than 0.97, at the significance level of P=0.001¹⁰⁾.
Therefore, there are possibility that one can directs working condylar path straight laterally on the intercondylar axis, by treating the lateral incisal path so as to coincide with the neutral line.
It is suggest ed that the Condylar path, as far as the workingside is concerned, may not be fixed and may change or be changed.