Effect of some temporary cements on the shear bond strength of dual-cured composite resin to enamel and dentin surfaces

ABSTRACT

The purpose of this in vitro study was to evaluate the shear bond strength of dual-cured composite cement after pretreatment of the enamel and dentin surfaces with eugenol-containing and eugenol-free temporary materials and comparing the results obtained with the control group [not pretreated with any temporary materials]. Cylindrical posts of dual-cured composite were bonded to the teeth surface by using syntac adhesive bond and positioned vertically to the flat dentinal area. The shear bond strengths were measured at composite-tooth surface interface by using a universal testing machine. The results of this study have shown that the shear bond strengths of dual-cured composite in the pretreated groups were highly significant in comparison with the control group at a significant level. It was concluded that the shear bond strength of dual-cured composite is effective on using temporary materials, particularly the eugenol-containing one. Also, syntac adhesive bond improved the bond strength of dual-cured composite/tooth interface