Abstract
In order to improve the mechanical properties of dental composite resins, organic fillers were prepared.We polymerizied composite resins containing these fillers with BPO-Amine and examined the effect of organic filler on the mechanical properties of composite resin.TMPT filler was proved to have better mechanical properties than UDMA filler as organic filler because of the reactivity of residual double bonds in TMPT filler.Furthermore, we examined the monomer which was compatible with TMPT filler, and found that EDMA or TEGDMA was adaptable monomer of the TMPT composite resin matrix, but at the same time the disadvantage in these compositions was the amount of water sorption.Then we used RDMA monomer as the component of resin matrix to reduce the amount of water sorption and measured the mechanical properties.Composite resin which was the mixture of TMPT filler and EDMA/RDMA or TEGDMA/RDMA had good mechanical properties such as Brinell hardness, compressive strength, water sorption and coefficjent of thermal expansion, compared with other organic filler composite resins.
