Flexural Strength, Elastic Modulus, and pH Profile of Self‐etch Resin Luting Cements

Abstract

The self-etching resin cements evaluated in this study displayed disparate properties and cannot be considered a homogeneous group. Flexural strength properties were most uniform and were similar to those of the conventional resin cements, whereas moduli of elasticity showed greater variation. Setting pH profiles differed, depending on the brand and mode of cure, even within the same category of luting cement. All cements with dual-cure capability, both conventional and self-etch, showed significantly superior properties when photopolymerized.

Are self-adhesive resin cements a valid alternative to conventional resin cements? A laboratory study of the long-term bond strength

“…In the study by Han [22] , the pH value for RXU was 7.0 48 hours after cementation, while GCM (pH 3.6) and SMC (pH 4.0) maintained in a significant lower pH level. Similar results have been shown in a study by Saskalauskaite [26]. Further studies are needed to determine if a low pH level influences the adhesion of cements to dentin.…”

“…In addition, pretreatment of the dentin facilitates to create a real hybrid layer which occurred with PAN but not with RXU [4]. Furthermore, differences in shrinkage behaviour [24], physical properties [25,26], pH values, and film thickness [22] of different self-adhesive resin cements were shown in a number of studies. In a study by Kitzmüller [24], shrinkage behaviour was depended on the temperature of the cement and the curing mode.…”

Bonding of Y-TZP to Dentin: Effects of Y-TZP Surface Conditioning, Resin Cement Type, and Aging

“…According to previously reported studies, [24][25][26] the lower values of bond strength obtained for Clearfil SA Cement can be explained by the inability of this cement to remove the smear layer on the dentin surface, as is the case with other self-adhesive resin cements. This leads to the formation of a poor hybridization layer between the resin cement and dentin.…”

Fracture resistance of endodontically treated premolars restored with lithium disilicate CAD/CAM crowns or onlays and luted with two luting agents

“…However, other studies have pointed out that the elastic modulus of resin cement plays a positive role in the strength of ceramic crowns 12,35) . In our study, the elastic modulus of resin cement is 5.5 GPa for RelyX ARC and 7.8 GPa for RelyX Unicem 36) , but neither produced an influence on the fracture loads of IPS e.max CAD all-ceramic crowns and onlays. This may be explained by the fact that the inherent fracture resistance of IPS e.max CAD material surpasses that produced from the resin cement 27) .…”