A Physiological Study Of Orientation Of Occlusal Plane In Complete Dentures Construction

The orientation of the occlusal plane is an important clinical procedure in prosthodontic treatment for edentulous patient. Many works have been involved in this subject but most of them were limited in exploring ways of the orienting method, few related to the physiological effects caused by the plane.The purpose of this study was to elucidate the relationship between the orientation of occlusal plane and masticatory function, and the health of stomatognathic system in complete dentures wearers. The study included two main parts. The first part was to establish three dimensional models of complete dentures and their underlying supporting tissues, by means of simulating the stomatognathic states (complete dentures, mucosa, maxillary and mandibular bones, masticatory muscles and tempo.omandibular joints) of complete dentures wearers based on the previous literature and clinical measurements for both measuring the stresses of the dentures and the bones by strain gauging method and calculating the displacement and the state of stress distribution of the dentures and the (?)ones by finite element method. Then, the three dimensional finite element models were improved by comparing the stress state of dentures and lones between the measuring and calculating method in the same load c(?)ndition. Furthermore, the effects of anterioposterior inclination of occlu al plane on displacement of the dentures and the bones, and on the stres, distribution of the bones were investigated by three dimensional finite element analysis method. In the second part, the effects of anterioposterior and Lateral inclination of occlusal plane on...