Optimisation of Flexural strength in Zirconia nanoclusters of the Bis-GMA & TEGDMA based dental composites

Abstract

Chewing food is a dynamic and continuous process. tooth is an important component which can not be neglected. Accordingly to WHO(world health organization) report nearly 100% people have decay once in life. Decay can be filled with gold, silver amalgam. Composites have advantages by providing natural colour of tooth, less tooth removal required to fill cavity and natural tooth structure can be maintained. The aim of this work is to present an analysis of the composites and furnish dentists with a basis that can provide criteria for choosing one or another to suit their treatment. The mechanical properties of composite resins are importantly depends upon filler content. Dental composites are using silica, quartz and alumina glass as filler for long time. Zirconia is the latest addition as filler. Chewing of food is a dynamic situation in which many forces are acting in all possible direction, the most important being the flexural force. Our aim is to optimise the flexural strength in Zirconia nanoclusters of the Bis-GMA & TEGDMA based dental composites. The aim of work is to find out best combination of composite material.

Effect of Nanohydroxyapatite, Zirconia and Glass Filler Particles on the Wear and Microhardness of Experimental Dental Composite Resin

“… 5 , 6 The filler loading of 70–80% by volume and 65–75% by weight fraction has been shown to enhance the wear properties. 7 …”

Preparation and characterization of silica based nanoclusters as reinforcement for dental applications

“…Few methods to prepare silica nanoclusters for use in dental resin composites have been reported. These include sintering at 1300°C, [ 27 ] Spray‐Drying Process, [ 24 ] and solvent evaporation. [ 28 ] However, based on their preparation procedures most of them seem to be complex, time consuming, and have low efficiency applications in terms of high energy consumption and demanding industrial applications.…”

“…[21,22] Another alternative method of improving the clinical performance of the resin is the use of particle fillers in the form of nanoclusters. [23,24] This improvement includes higher filler load, reduction of polymerization shrinkage, increased wear resistance and flexural strength, high compressive strength, and wear volume of composites. Despite this important development, few studies on the use of prepolymerized fillers in the form of silica/polymer clusters are found in the literature.…”