Abstract
Abstract In this article, BisGMA and TEGDMA were used as resin material to fabricate dental composite. Camphorquinone was used as photoinitiator and DMAEA was used as coinitiator. Different %wt of micro sized zinc oxide (0%, 3%, 6% and 9%) was used as filler to study the effect of different compositions of zinc oxide filled dental composite. Resin matrix with different compositions were prepared to fabricate dental composite samples. Polymerization shrinkage and Vickers micro-hardness were measured. This study reveals experimentally that introduction of zinc oxide in dental resin significantly reduces polymerization shrinkage and improves micro-hardness of the restorative dental composite. Minimum polymerization shrinkage of 8.02% and maximum micro-hardness of 80 Hv were achieved at 9 %wt of zinc oxide as filler in dental composite.
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