THE EFFECT OF DİFFERENT SELF-ETCH LUTING CEMENTS ON THE MICROLEAKAGE OF IPS E-MAX GLASS CERAMİC RESTORATIONS

Self-adhesive cements have been evaluated clinically and have a successful clinical history. These cements contain resins that provide structural reinforcement of the cement and also offer strong cross-link bonding following polymerization. Despite improved adhesion with resin cements microleakage remains a concern with ceramic restorations. The cervical margins of all ceramic crowns are the weakest microleakage areas especially when they are located in dentin. Microleakage can be relat ed tomargin misfit although no strong correlation between margin fit and microleakage scores in complete crowns has been demonstrated. Classically defined, microleakage is the diffusion of substances, such as bacteria, oral fluids, molecules and/or ions into a fluid-filled gap or into a structural defect that is present or one that occurs between restorative materials and tooth structure. The aim of this study is to evaluate the microleakage of all ceramic crowns cemented with 4 different self etch cements.