2 Relationship between the stability of intercuspation and cranio-mandibular disorders

Abstract

We evaluated the relationship between the stability of intercuspation and cranio-mandibular disorders. Occlusal contact area, the number of occluding teeth and asymmetry of the occlusal contact area were measured on video images of the occlusal contacts during strong and weak occlusal forces. A premature contact index (PCI) was constructed based on changes in the contact area between the weak and strong forces. Occlusal contact area, the number of occluding teeth, and asymmetry were significantly different among the subjects. These differences were greater with weak rather than strong forces. There were also significant differences in PCI.