Abstract
To study the thermal properties of tooth adhesive resin cement, we used two currently available resin cements(Super Bond C & B:SPB and Panavia EX:PAN), both of which are often used for clinical trials.The experiments were made following a xenon flash thermal constant measuring device and performed under the condition of P/L ratio of 0.8, 1.0 and 1.2(P/L=1.0:manufacturer's instruction).The rate of thermal diffusivity(×10-2cm2s-1)of SPB was between 0.092 and 0.103 and the rate of PAN was between 0.393 and 0.474.The specific thermal capacity(Jg-1K-1)of SPB was between 1.787 and 2.059 and that of PAN was 0.786-0.830.The thermal conductivity(Wm-1K-1)of SPB was 0.213-0.221 and that of PAN was 0.657 and 0.799.The thermal conductivity of SPB was not affected by the P/L ratio.While, the thermal conductivity of the PAN decreased with a decrease of P/L ratio.The thermal conductivity of SPB was lower and that of PAN was higher than that of human dentin.
