Comparison of the resistance of three ceramic systems in anterior fixed prosthetic segments: a finite element analysis

Authors

  • Érika Alejandra Pineda-Duque Universidad de Antioquia
  • Julio César Escobar-Restrepo Universidad de Antioquia
  • Federico Latorre-Correa Universidad de Antioquia
  • Junes Abdul Villarraga-Ossa Universidad de Antioquia

Keywords:

Dentures, Crowns, Ceramics, Aluminum oxide

Abstract


Introduction: the purpose of this study was to evaluate stress distribution on three-unit fixed partial dentures (FPD) in the anterior region, made of three ceramic systems with connector variations. The study was performed by the finite element method. Methods: four segments of FPD were modeled; three of them were made on ceramic systems: lithium disilicate, alumina, and zirconia, and the fourth model was of lithium disilicate with a connector of 9 mm2 in area. The modeling included three variables: elastic modulus, Poisson’s ratio, and ultimate tensile strength. An initial load of 200 N was applied and increased up to 1000 N calculating von Mises, maximum tensile, compressive, and shear stresses. Results and conclusions: all the ceramic systems showed a suitable behavior for FPDs in the anterior area; the structure’s elastic modulus influences stress behavior; if it is higher, it reduces stresses in feldspar ceramics and periodontal ligament. We noted that in presence of a connector of 16 mm2 in area, the periodontal ligament received greater stresses as a compensation effect, but they significantly decreased in the structure. By reducing the connector area to 9 mm2, the stresses increased to 48%, but did not reach yield strength when subjected to loads of 1000 N, providing the system with proper margin tolerance without fracturing.

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Author Biographies

Érika Alejandra Pineda-Duque, Universidad de Antioquia

Dentist, Specialist in Comprehensive Dentistry of the Adult with an emphasis on Prosthodontics, School of Dentistry, Universidad de Antioquia.

Julio César Escobar-Restrepo, Universidad de Antioquia

Dentist, Specialist in Comprehensive Dentistry of the Adult with an emphasis on Prosthodontics, Associate Professor. School of Dentistry, Universidad de Antioquia

Federico Latorre-Correa, Universidad de Antioquia

Dentist, Specialist in Comprehensive Dentistry of the Adult with an emphasis on Prosthodontics, Full Professor. School of Dentistry, Universidad de Antioquia.

Junes Abdul Villarraga-Ossa, Universidad de Antioquia

Mechanical Engineer, Universidad Nacional de Colombia at Medellín. Msc Mechanical Engineering. Universidad Simón Bolívar, Caracas, Venezuela. Ph.D. (C) Science and Technology of Materials

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Published

2014-01-13

How to Cite

Pineda-Duque, Érika A., Escobar-Restrepo, J. C., Latorre-Correa, F., & Villarraga-Ossa, J. A. (2014). Comparison of the resistance of three ceramic systems in anterior fixed prosthetic segments: a finite element analysis. Revista Facultad De Odontología Universidad De Antioquia, 25(1), 44–75. Retrieved from https://revistas.udea.edu.co/index.php/odont/article/view/11886
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