Effect of different surface treatments on bond strength of resin cement to two recent ceramic materials

Abstract

Statement of the problem: Recent ceramics provide wide range of indications for restorative dentistry, however one of the most common failures is loss of retention & de-bonding of ceramic restorations, that’s why achieving maximum adhesive bonding strength is a major goal. So Long-term survival of adhesive esthetic restorations remains a challenging matter and depends on the success of a reliable bond among ceramic, the luting agents and the dental substrates, In an attempt to improve bonding of resin cements to ceramics, various surface treatments have been recommended to facilitate chemical and micromechanical retention, yet choosing the right protocol for each particular material is the key for success of different adhesive restorations. Aim of the study: This research was performed to study the effect of different surface treatments which are: Acid etching & silanation (9.5 % HF acid etching), Al2O3 sandblasting & silanation, 2W, Er,Cr:YSGG laser etching with repition rate 20 HZ for 20 secs & silanation, to two recent ceramic materials: resin nano ceramic (Crystal Ultra) &True hybrid ceramic polymer infiltrated ceramic network material. (Vita Enamic).