Synthesis and Characterization of New Dental Composite for Dentistry Based on Unsaturated Monomers and Nano-fillers by Photopolymerization

Saleh Mahdi, Mahdi; Ali Mutar, Mohammed

doi:10.30772/qjes.v13i1.646

	Synthesis and Characterization of New Dental Composite for Dentistry Based on Unsaturated Monomers and Nano-fillers by Photopolymerization
Al-Qadisiyah Journal for Engineering Sciences
Volume 13, Issue 1, March 2020, Pages 22-30 PDF (556.46 K)
DOI: 10.30772/qjes.v13i1.646
Authors
Mahdi Saleh Mahdi; Mohammed Ali Mutar
Chemical Engineering Department -Faculty of Engineering – University of Al-Qadisiyah-Iraq
Abstract
In this study, dental nano-composite specimens were prepared by dispersion of various amounts of nano-sized fillers (HA, ZrO₂, and SiO₂) in a monomer system containing 60% Bis-GMA and 40% TEGDMA. 2,2 propyl bis-phenyl glycidyldimethacrylate (Bis-GMA) with unsaturated monomers were prepared. Camphor Quinone (CQ) of 1 wt %, 2-DiMethyl Amino Ethyl Methacrylate (DMAEMA) of 1 wt % have been applied in photo-initiation system for the purpose of initiating matrix resins’ co-polymerization. Wear resistance, flexural strength, hardness and compressive strength were measured. The results indicated an increase in the mechanical properties in the samples containing nano-size filler particles. It is interesting to note that, this improvement was observed at much lower nano-size filler content. Physicochemical properties, such as Solubility (SL), Water Sorption (WS) as well as the Volumetric Shrinkage (VS) have been examined. FT-IR as well as SEM have been utilized for implementing the characterization. SEM has been applied for showing particle size distribution as well as the particle agglomeration that is related to the treated nano-fillers in nano-composites. FT-IT is initially applied for identifying qualitative compositions regarding the nano-composites’ compositions. The Thermal stability of all dental nano-ocomposites was also studied using TGA and DSC techniques.
Keywords
Dental; composite; Nano fillers

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