出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：Occlusal contacts are considered one of the most important factors in the success of dental treatment, as occlusal interferences can result in potential damage to the entire stomatognathic system. The aspects of biomechanical events that result from premature occlusal contacts on teeth and their supporting tissues are still not sufficiently clear. Thus, the aim of this study was to evaluate, using the three-dimensional finite element method, the distribution of stresses, in teeth and supporting tissues, generated by different premature contacts in upper and lower first premolars, in the centric occlusion position. The research was designed considering two factors of premature contacts that are possible to occur clinically, “A” contact and “B” contact. Meshes were generated using the Solidworks software and the tests were performed using the finite element software Cosmos Design Star, with a load intensity of 100 N on the occlusal surface. Von Mises maps were generated to analyze the stress distribution in the tooth, in the socket, and in the set of tooth and socket. Higher tensions were observed at the cemento-enamel junction of the maxillary premolars in contact “A” (12.34 Mpa) and “B” (13.56 Mp), while in relation to the tooth and alveolus set, higher tensions were found in the hemi- lower arch in “A” (11.02 Mpa) and “B” (10.53 Mpa) contact. It is concluded that both in premature contact in “A” and in “B”, there is always the concentration of maximum tension around the cementoenamel limit, either in the maxillary first premolar or in the mandibular first premolar.
关键词：Dental Occlusion;Stomatognathic System;Finite element analysis.
