Effects Of Surface Treatments On Tensile Bond Strength Between Dentin And Glass-Infiltrated Ceramics

ObjectiveGlass - infiltrated ceramics (In - Ceram) is a promising dental ceramic materials for restoration. Because the inner surface of dental ceramics is always associated with fracture, the fiting surface should be strengthened. A proper adhesive method is of primary importance in dental ceramic restoration success. Earlier studies have noticed that most silica - based ceramics should be managed with etching and silane coupling agent , followed by adhesive cement. Because of the high quality of alumina in In - Ceram, a roughened surface can not be a-chieved with etching methods. So it is very important to investicate a proper adhesive method for this kind of ceramic material. The purpose of this study is to investicate the surface treatment methods effects on the bonding strengths between dentin and galss - infiltrated ceramics in order to provide the proper knowledge about it.MethodsAll the In - Ceram specimens were assigned into four groups associated with three surface treatments , respectively. Panavia adhesive, a phosphate - ester adhesive was used to have the composite bonded between dentin and In - Ceram. A Universal Testing machine was used at a crosshead speed of 0.5 mm/min to test the tensile bond strengths after 24 hours in distilled water. One - way ANOVA and Turky HSD( alpha =0. 5) test were analyzed with Spss 11. 5. All the surface failure modes were examed with electron scanning microscopy.