Effects of surface treatments on bond strength of glass-infiltrated ceramic

Abstract

The purpose of this study was to evaluate the effects of various surface treatments on the bond strength at the In-Ceram/resin composite interface. Ninety-eight In-Ceram specimens were divided into seven groups and exposed to various surface treatments as follows: (A) control (B) saliva contamination (C) saliva contamination plus aluminum oxide sandblasting (D) glove powder contamination (E) glove powder contamination plus aluminum oxide sandblasting (F) rough aluminum oxide sandblasting and (G) excess glass infiltration. A resin composite cylinder was cemented to each In-Ceram specimen with Panavia 21 resin luting cement. Half of the cemented specimens in each group were stored in water for 24 h, and the other half were stored in water for 2 weeks and then were thermo-cycled for 2000 cycles. Shear bond strengths (SBS) of seven specimens in each subgroup were determined and analysed using analysis of variance (ANOVA) and Tukey HSD test as well as Student's t-test. Scanning electronic microscopy was used to identify the type of bond failure. Shear bond strength was significantly decreased by saliva and glove powder contaminations (P < 0.05). Sandblasting treatment did not improve the saliva-contaminated specimens. However, the glove powder plus sandblasting group showed no significant difference in SBS compared with the control group. There was no significant difference in SBS between the excess glass-infiltrating group and the control group. The SBS was significantly decreased by rough aluminum oxide sandblasting (P < 0.05). The SBS values of groups without thermocycling were significantly greater than those of groups with thermocycling (P < 0.05). There were no significant differences among SBS values of the seven groups with thermocycling. Combined cohesive and adhesive bond failures were seen in every group. Various surface treatments or contaminants may significantly influence the bond strength of In-Ceram restorative in clinical use.

Effect of Self‐adhesive Resin Cement and Tribochemical Treatment on Bond Strength to Zirconia

“…The silica layer left by silica coating on the ceramic surface provides a basis for silane to react. In the ceramic-resin bond, silane functions as a coupling agent, which adsorbs onto and alters the surface of the ceramic, thereby facilitating chemical interaction (Lu et al, 2001;Ozcan, 2003).…”

Effect of surface conditioning methods on the bond strength of luting cement to ceramics

“…Although hydrofluoric acid is efficient in roughening feldspathic ceramic for bonding composite resin [11 -16], neither etching with these solutions nor adding silane resulted in an adequate resin bond to some new ceramics [17 -19]. Particularly high-alumina [20,21] or zirconia ceramics [22,23] www.elsevier.com/locate/dental hydrofluoric acid etching since such ceramics do not contain a silicon dioxide (silica) phase. For this reason, special conditioning systems are indicated for these types of ceramics.…”

Effect of sandblasting on the long‐term performance of dental ceramics

“…Sandblasting of the interior surface is a common practice in all‐ceramic crown restorations—the roughened surface enables a strong mechanical bond with resin‐based dental cements 12–23. However, sandblasting introduces its own surface flaws and defects that can compromise the strength of the crown.…”