Abstract
Resin cements consisting of TMPT-filler as a powder and a mixture of HPPM and DEGDMA or TEGDMA as a liquid were prepared. Mechanical properties of the resin cements and their tensile bond strength to bovine tooth were investigated in regard to the monomer compositions. The powder-liquid ratio (P/L) was 1:1 by weight. The best results were obtained with HPPM-TEGDMA (4:6, by weight). The mechanical properties of this cement were measured: the compressive strength was 2, 000 kgf/cm2, diametral tensile strength 360 kgf/cm2, setting time 5 min and consistency 32 mm. The amount of eluted monomers was minimized. The tensile bond strength to enamel etched with 65 wt% phosphoric acid aqueous solution was 42 kgf/cm2. However the film thickness was 51.7 μm and tensile bond strength to etched dentin was low.
