Measurement of Disocclusion during Protrusive Movement

Part I Normal Dentition with Anterior Teeth

Abstract

Amounts of disocclusion during protrusive movement were measured using leaf gauge, on study models of 25 male subjects with normal dentition and free of TMD, mounnted on a semi-adjustable articulator. The results showed that the average amount of disocclusion for molars is 1.06+0.43mm. The amount of disocclusion of the first molar is larger than those of the first and second premolar portion and the second molar, in average. The amount of disocclusion during protrusive movement of a subject with normal dentition with anterior teeth will never be zero.