Position of the Mandible in Retrusive Movement

Abstract

We investigated the effects of various retrusive movements on mandibular position by simultaneously recording the position of condylar and incisor points.
1. During retrusive movement the average distances between intercuspal position (ICP) and retruded contact position (RCP) for the condylar and incisor points were 0.94 and 0.62 mm, respectively.
2. The condylar position obtained during voluntary retrusive movement was the same regardless of the method of movement used.
3. The average distance between ICP and RCP for the condylar point during passive retrusive movement was 1.04 mm, which was greater than that during voluntary movement.