Effect of Tin and Aluminum Deposition on porcelain / cement shear bond strength

Abstract

This study was carried out to investigate the effect of Tin and Aluminum deposition on the porcelain I cement shear bond strength and the color changes that might have taken place . Two different types of ceramics were used:­ a) Ducera ( L.F.C. ) b ) In - Ceram core material . Two different types of luting cements were used :­ a) Adhesive resin cement . b) Glass ionomer cement. Samples construction:- The ceramic samples were fabricated according to the manufacturer's instruction, with a 6 mm diameter and 3mm thickness using a specially designed copper mold. The ceramic samples from each type of the tested ceramics were divided into 3 groups according to the type of surface treatment employed . Group (1) :-The ceramic samples were sandblasted with 50 urn aluminum oxide ( representing the control group ) . Group (2) :- The ceramic samples were Tin coated with 0.3 urn Tin using a coating unit . Group (3) :-The ceramic samples were Aluminum coated with 0.3um Aluminum using a coating unit .