Evaluación no lineal de dos postes diferentes

ABSTRACT: Endodontically treated teeth that will be restored with crowns and which have lost part of their dental structure need a cast post or a prefabricated post to improve final restoration retention and therefore to be able to regain their functionality and aesthetics. The literature suggests when to use a cast or prefabricated post, but it is not conclusive in terms of which one has a better stress distribution, which post material or shape is better, or whether their modulus of elasticity is related to load distribution along the tooth’s axis. Methods: by using Solid Works, two models of a maxillary central incisor with all its supporting structures were made, one with a cast post and another one with a prefabricated post plus an all-ceramic crown. By means of finite element analysis both teeth were subjected to loads of 200, 400, 600 and 800 N up to reaching their plasticity. Results: at 200 and 400 N, both posts showed different stress distribution patterns without altering the restoration or the tooth’s root. Conclusions: at normal masticatory loads, both posts are likely to restore a tooth that needs addition of a post.

• Autores: Lopera Builes, Patricia; Latorre Correa, Federico; Villarraga Ossa, Junes Abdul
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2012
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/4669
• Acceso en línea: http://hdl.handle.net/10495/4669
• Palabra clave: Poste colado; Poste prefabricado; Distribución de los esfuerzos; Método de elementos finitos
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 2.5 Colombia (CC BY-NC-SA 2.5 CO)