Abstract
The effect of zinc oxide-eugenol material (Cariosan, Spofa Dental) on resin-based restorative materials (a composite resin - Premise, Kerr Company, a compomer - Dyract Extra, Dentsply, a giomer - Beautifil, Shofu) hardness was investigated. Surface hardness was evaluated using a digital microhardness tester (Micro-Vickers Hardness System CV- 400DMTM, CV Instruments Namicon). In contact with eugenol-based cement the hardness values of all tested materials significantly decreased. After cement storage in artificial saliva for 1 and 7 days, the hardness values of all three resin-based materials registered a significantly increase when compared to the samples where the materials were placed in contact with eugenol-based cement immediately after setting, but still significantly lower when compare to the samples having no contact with eugenol-based cement.
Keywords: Zinc oxid eugenol material; composite resin; giomer; compomer; surface hardness