Stress distribution on a five unit fixed partial prosthesis with intermediate abutment: biomechanical analysis using a finite element model

  • Carolina Márquez-Córdoba Universidad de Antioquia
  • Julio César Escobar-Restrepo Universidad de Antioquia
  • Federico Latorre-Correa Universidad de Antioquia
  • Junes Villarraga-Ossa Universidad de Antioquia
Keywords: Finite element analysis, Abutment, Non rigid connectors, Rigid-commectors, Partial fixed prosthesis

Abstract

Introduction: the purpose of this study is to establish the mechanical behavior between rigid and non-rigid fixed dental prosthesis of five units with an intermediate abutment using the finite element analysis (FEA). Methods: a five unit rigid model with 124.469 nodes and 76.215 elements and a non-rigid model with 125.130 nodes and 77.396 elements were designed. It consisted of trabecular bone, cortical bone, periodontal ligament, pulp, dentine, root, resinous cement, metal ceramic crowns and tube-lock adjustment (Sterngold®, Implamed Attleboro MA). The fixed dental prosthesis included a central incisor, lateral incisor, canine, first and second upper premolars. A force of 200 N was applied with an oblique and vertical direction. The variables included in the model were modulus of elasticity, Poisson’s ratio and non-rigid adjustment. Von Misses stresses, main, maximum and minimum, were calculated for each group. Results and conclusions: the analysis of the mechanical behavior indicated that the rigid fixed dental prosthesis showed a better distribution of the stresses in comparison with the non-rigid model. The behavior of each group indicated that the rigid model transmitted less stress to the underlying root and bone. The indication to use an adjustment would not be justified according to the results of this study.

|Abstract
= 32 veces | PDF (ESPAÑOL (ESPAÑA))
= 35 veces|

Downloads

Download data is not yet available.

Author Biographies

Carolina Márquez-Córdoba, Universidad de Antioquia

Graduate student of Comprehensive Adult Dentistry with an emphasis on Prosthodontics, Faculty of Dentistry, Universidad de Antioquia.

Julio César Escobar-Restrepo, Universidad de Antioquia

Dentist, specialist in Comprehensive Adult Dentistry with emphasis on Prosthodontics, assistant professor, Faculty of Dentistry, Universidad de Antioquia.

Federico Latorre-Correa, Universidad de Antioquia

Dentist, specialist in Comprehensive Adult Dentistry, associate professor, Faculty of Dentistry, Universidad de Antioquia.

Junes Villarraga-Ossa, Universidad de Antioquia

Mechanical Engineer, Master in Mechanical Engineering, Associate Professor, Faculty of Mechanical Engineering, Universidad de Antioquia.

Published
2011-07-14
How to Cite
Márquez-Córdoba C., Escobar-Restrepo J. C., Latorre-Correa F., & Villarraga-Ossa J. (2011). Stress distribution on a five unit fixed partial prosthesis with intermediate abutment: biomechanical analysis using a finite element model. Revista Facultad De Odontología Universidad De Antioquia, 22(2), 153-163. Retrieved from https://revistas.udea.edu.co/index.php/odont/article/view/4969