Effect of artificial aging environment and time on mechanical properties of composite materials

Abstract

Aim: The purpose of this study was to evaluate the Vicker's hardness and surface roughness of eight different composite materials immersed artificial saliva and distill water. Materials and Methods: Five standardized disc shape specimens (2mm diameter X 2mm height) were prepared from eight composite materials (Grandio, Estelite Flow, Filtek Bulk-fill, Charisma, Clearfil, Ultimate, Quadrant and G-aenial for each artificial aging environment. Specimens were immersed during 7, 90 and 180 days in artificial saliva and distill water at 37 °C respectively. The Vicker's hardness and surface roughness values of the samples were measured after each artificial aging period. Mean values and standard deviations were calculated and statistical analysis was performed using one-way ANOVA. Results: In this study Vicker's hardness and surface roughness values of all samples significantly increased after both in artificial saliva and distill environment 7 days aging period. Conclusion: In this study, suggested the similar to mechanical behavior of the bulk-fill and resin-based composite materials both artificial saliva and distill aging periods. However, in this study no linear relationship was found between filler volume and surface roughness both in artificial saliva and distill aging environment.