Abstract
The purpose of this study is to clarify the stability of the habitual lateral mandibular movement which is different from the border lateral movement. The movements of 30 normal subjects were measured dynamically and precisely with Kyushu University 3-D movement analizing system.
The following results were obtained:
The habitual incisal lateral movement was very stable from the intercuspal position to 3 mm lateral point.
The stability of the movement was not influenced by the occlusal factor such as the lateral guidance.
As a result, the movement was so stable and repeatable that it could be used as a reference movement for comparing with other movements.
