Assessment of Some Properties of Heat Activated Denture Base Resin Reinforced with Strontium Titanate Nano Powder
Author(s): Wisam Ahmed Shihab* and Mohammed Moudhaffer Mohammed Ali
Abstract
Introduction: In the current research, evaluation of some properties of heat cured acrylic resin were carried out after adding different concentration of strontium titanate (SrTiO3) nano powder (1% and 1.5% wt.).
Statement of the problem: Polymethyl Methacrylate (PMMA) is the most often utilized material for dentures manufacturing. Insufficient thermal conductivity, poor surface hardness, increase in roughness values and reduced some mechanical qualities make this material far from optimal in terms of justifying mechanical requirements.
Aim of the study: The goal of this research was to investigate the effects of adding SrTiO3 (NPs) nanoparticles in proportion of 1% wt. and 1.5% wt. on some physical and mechanical properties of heat cured denture base material.
Materials and methods: One hundred twenty (120) samples were divided into four groups based on the testing property, each group had 30 specimens, which were then divided into three groups: Control group, reinforced PMMA (1% wt. and 1.5% w SrTiO3 nanoparticles).
Impact strength, transverse strength, vickers hardness test and surface roughness were all tested. Additional tests include Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR).
Result: FTIR revealed no chemical interaction between SrTiO3 NPs and acrylic resin. The results of this study showed at 1.5% wt. SrTiO3 highly significant increase in impact strength and vickers hardness, while for transverse strength the 1% wt. showed highly significant increase while there was non-significant decrease in surface roughness.
Conclusion: The addition of SrTiO3 nanoparticles into denture base acrylic material improve impact strength, transverse strength, surface hardness values, while there was non-significant reduction in surface roughness.