Evaluation of Bonding Resistance after Surface Treatment of Two Glass-Ceramics Used in Dentistry

Abstract

The goal of this study was to evaluate the bonding resistance of two dental ceramics. The samples, one of each type of ceramics, were split into 4 groups (n=4) separated from those from control group, the others were conditioned with 5% hydrofluoric acid, according to the times of 20, 40 and 60 seconds. Cylindrical pins of resin cement were applied in each sample. After a shearing test, the obtained results showed that experimental groups has given higher bonding strength values than the control groups for both ceramics. For the e.max ceramic, the highest values were observed with timings of 20 and 40 seconds and for the Suprinity ceramic the conditioning timings were insignificant. The authors concluded that the surface treatment with hydrofluoric acid improved the bonding strength for both ceramics; and the e.max ceramic showed higher bonding values than the Suprinity.

Is the bond strength of zirconia-reinforced lithium silicate lower than that of lithium disilicate? - A systematic review and meta-analysis

“…The samples were aged in five studies, one of which was stored in water for three months [13], and the other four were thermocycled [6,11,29,31]. Two types of bond strength tests were used: shear bond strength tests [11,29,30,38] and micro-tensile bond strength tests [6,13,31]. Based on the parameters considered in the quality assessment, all studies presented a medium risk of bias (Table 2).…”