Relationship between mandibular rotation and mandibular incisal position during chewing movements

Abstract

The purpose of this study was to investigate the relationship between mandibular rotation and mandibular incisal position during chewing movements.
Measurement of mandibular movements during mastication was made using the Sirognathograph Analyzing System in 25 normal subjects.
The rotation around the anteroposterior axis and lateral axis of the mandible and the lateral deviation exhibited high correlation at each vertical dimension except 1-2mm level. The rotation around the anteroposterior axis and the lateral deviation exhibited no correlation at 1-2mm level.
It is suggested that measuring mandibular rotation is important to comprehend detailed mandible movements during mastication.