Relationship between filler content and selected mechanical properties of six microhybrid composites

  • Eduardo Gonçalves Mota PUCRS
  • Adriano Weiss PUCRS
  • Ana Maria Spohr PUCRS
  • Hugo Mistuo Silva Oshima PUCRS
  • Lígia Maria Nogarett de Carvalho PUCRS
Keywords: Composite resin, mechanical properties, dental materials

Abstract

Purpose: The purpose of this study was to evaluate the influence of filler weight content on selected mechanical properties of six microhybrid composite resins. Methods: Compressive strength, elastic modulus, Vickers microhardness (VHN), and weight filler content were evaluated in the following dental composites: Admira (AD), Charisma (CH), InTen-S (IN), Tetric Ceram (TC), Point 4 (P4), and Z250 (Z2). Results: Mean values for compressive strength (MPa) ranged from P4 76.60 to Z2 222.33. The elastic moduli (GPa) ranged from IN 2.56 to Z2 4.59. Microhardness VHN ranged from P4 50.53 to Z2 87.88. Filler weight content (Wt %) ranged from IN 72.51 to TC 79.56. Significant differences were found between the composites (ANOVA/Tukey’s, P<0.05). Conclusion: Z2 had the highest compressive strength; Z2 and TC showed the highest elastic modulus, VHN and filler weight content. Weight filler content had a strong influence on mechanical properties (0.78

Author Biographies

Eduardo Gonçalves Mota, PUCRS
Dreas de Materiais Dentários e Dentística
Adriano Weiss, PUCRS
DDS Graduate Student in Dental Materials, Pontifical Catholic University of Rio Grande do Sul
Ana Maria Spohr, PUCRS
DDS, MS, PhD Professor, Prosthodontic Department, Pontifical Catholic University of Rio Grande do Sul
Hugo Mistuo Silva Oshima, PUCRS
DDS, MS, PhD Professor, Prosthodontic Department, Pontifical Catholic University of Rio Grande do Sul
Lígia Maria Nogarett de Carvalho, PUCRS
DDS.
Published
2010-12-06
Section
Original Article