The film thickness of five adhesive resin cements

The purpose of this in vitro investigation was to determine the film thickness of five resin cements, namely All-Bond 2(Bisco,AB), C&B-Metabond(Parkell,CB), Enforce(Caulk/Dentsply,E), Imperva Dual(Shofu,ID) and Panavia EX(Kuraray,P). An electronic gauge with an accuracy of 0.5 micron was recalibrated after each recording, and each cement was measured 10 times. Statistical analysis was carried out using the ANOVA test. The mean film thickness values (micron) of the five cements were: AB = 58.8 +/- 4; CB = 35.8 +/- 1.2; E = 22.9 +/- 1.4; ID = 25.7 +/- 1.2 and P = 44.3 +/- 1.2. There was a statistical significant difference between the film thicknesses of AB and the other cements (p < 0.05). The ID and E cements also demonstrated statistically significant lower film thicknesses than CB and P (p < 0.01). Imperva Dual and Enforce demonstrated the lowest and All-Bond 2 the highest film thickness values.