Assessment of some mechanical properties of PMMA/silica/zirconia nanocomposite as a denture base material
Abdalbseet A. Fatalla, Mustafa S. Tukmachi, Ghasak H. Jani
Abstract
Abstract In this research, nanocomposites of poly(methyl methacrylate) (PMMA) and a mixture of nano silica (SiO 2 ) and nano zirconia (ZrO 2 ) were prepared in different weight percentages of the nano fillers to improve some of the properties of PMMA resin to be used as a denture base material. The nano filles were surface modified with a coupling agent and added to the PMMA in different amounts. Impact strength, transverse strength, hardness and roughness were tested for both control and experimental groups. The results indicate that PMMA/silica/zirconia nanocomposites, prepared with 5% by weight of both types of fillers, had a slight increase in impact strength, transverse strength and hardness with only an insignificant increase in roughness. This kind of composite material may have the potential for application in dental practice.