Shear bond strength to feldspathic porcelain of two luting cements in combination with three surface treatments

摘要: Abstract Statement of problem. Although selection clinically reliable bonding system is essential, limited information concerning the combination durable ceramic and luting agents available. Purpose. This in vitro study was conducted for purpose evaluating bond strengths materials conjunction with their initiation silane-activation modes. Material methods. Disk-shaped fired porcelain specimens were air-abraded alumina, then bonded six combinations three silane priming two agents; also cements without priming. Shear determined both before after thermocycling. Results. For unprimed control groups, as well groups Panavia 21 cement (Clearfil Porcelain Bond 21; Ceramic Primer 21) reduction thermocycling remarkable compared corresponding prethermocycling ( p Conclusion. The above systems appeared to be useful long-term clinical success feldspathic restorations. (J Prosthet Dent 1997;78:511-17.)