Preparation and characterization of Novel Bis-GMA Dental Nanocomposite and their application as dental material: Mechanical Properties and Water Sorption/volumetric shrinkage

Abstract

Novel Nanocomposite materials on the basis of unsaturated monomers as well as 2,2 propyl bisphenol glycidyl dimethacrylate (Bis-GMA) and unsaturated monomers with Nano inorganic fillers [SiO2,ZrO2 and Hydroxyapatite (HA)] were subjected to process of synthesizing as well as characterizing for the purpose of evaluating their possible applications as restorative materials in the field of dentistry. The initial method has been for generating in addition to characterizing novel Nanocomposites bases on (Bis-GMA), N,N'-methylene bis acryl amide (MBA), acrylic acid(AA) and methylacrylate(MA) monomers. Composites containing Bis-GMA and N,N'-methylene bis acrylamide (MBA) with the ratio (wt / wt) of (40 / 20), which has been filled with various Nanofiller amounts (up to 5% wt) were prepared. Photo-polymerization has been induced with camphorquinone / N,N-Dimethylaminoethyl methacrylate(CQ / DMAEMA), as photo-initiator system. Physicochemical properties, such as solubility (SL), water sorption (WS), as well as the volumetric shrinkage (VS) have been examined. The mechanical properties of the of dental Nanocomposites flexural strength and compressivewere widely discussed. Characterization will be implemented through the use of FTIR and SEM are applied for showing particle size distribution in addition to particle agglomeration related to the treated Nanofillers in Nano-composites. FTIR spectroscopy has been initially applied for identifying qualitative composition of composition of Nanocomposites. The Thermal stability of all dental Nanocomposites were also studied using the TGA and DSC techniques.