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Evaluation of different post systems: finite element method / Evaluación de diferentes sistemas de postes: método de elementos finitos
Bessone, Laura; Fernandez Bodereau, Enrique.
  • Bessone, Laura; National University of Córdoba. Dental School. Department of Clinical Prosthodontics. Córdoba. AR
  • Fernandez Bodereau, Enrique; National University of Córdoba. Dental School. Department of Clinical Prosthodontics. Córdoba. AR
Int. j. odontostomatol. (Print) ; 4(3): 229-236, dic. 2010. tab, ilus, graf
Article in English | LILACS | ID: lil-594259
ABSTRACT
The aim of this study was to analyse the stress distribution in maxillary canines restored with different post systems and definitive crowns. The models of restored teeth with glass fiber, quartz fiber, titanium posts and crownswere developed with the Finite Element Method (FEM) in order to analyse their stress distribution when subjected to external compressive loads. Von Mises stress distribution values, which are considered potential fracture indicator, showed that natural tooth and glass fiber post-restored tooth, under a load of 550 N, presented similar stress values. The behaviour of a glass fiber post-restored tooth is similar to that of a natural tooth, since it produces an appropriate stress distribution, and inthis investigation, they have the best biomechanical performance.
RESUMEN
El próposito de este estudio fue analizar la distribución de tensiones en caninos superiores restaurados con diferentes sistemas de postes y coronas definitivas. Los modelos de dientes restaurados con postes defibra de vidrio, fibra de cuarzo y titanio y coronas fueron desarrollados con el Método de Elementos Finitos (FEM) para analizar la distribución de tensiones cuando fueron sometidos a cargas compresivas externas. Valores de distribución de stress de Von Mises, que fueron considerados como potenciales indicadores de fracturas, mostraron que los dientes naturales, y los dientes resturados con postes de fibra de vidrio, bajo una carga compresiva de 550N, presentaron valores semejantes. El comportamiento de los dientes restaurados con postes de fibra de vidrio fue similar al de los dientes naturales, mostrando una homogénea y más uniforme distribución del stress, y en esta investigación, presentaron una mejor performance biomecánica.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Quartz / Post and Core Technique / Finite Element Analysis / Crowns / Cuspid / Glass Limits: Humans Language: English Journal: Int. j. odontostomatol. (Print) Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Argentina Institution/Affiliation country: National University of Córdoba/AR

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Full text: Available Index: LILACS (Americas) Main subject: Quartz / Post and Core Technique / Finite Element Analysis / Crowns / Cuspid / Glass Limits: Humans Language: English Journal: Int. j. odontostomatol. (Print) Journal subject: Dentistry Year: 2010 Type: Article Affiliation country: Argentina Institution/Affiliation country: National University of Córdoba/AR