Bonding of all Ceramic Restorations

Abstract

problem of creating micro porosity and providing adherence of resin to crystalline ceramics, some methods have been proposed and advocated in the literature. They include applying primers containing acidic methacrylates, laser irradiation and deposing reactive silicate layers on the zirconia surface. Successful adhesion depends on proper cleaning of the internal surface of the restoration conducting to a strong link between the cement and the restoration [3]. According to recent studies, analysis of results leads to the fact that surface treatments of ceramics, mechanical or chemical, have an important influence on adhesion strength for both Zirconia based ceramics and glass ceramics [3,16]. But, it is also very important to remember that Zirconia crowns can also be cemented with conventional cements if adequate crowns preparation design provides sufficient retention without bonding [14]. A 22 year old female patient was referred to the Department of Prosthodontics at Monastir University. She had unilateral congenitally missing lateral incisor. Her medical history was non relevant while the dental history revealed that an orthodontic treatment was set up with a space opening leading to a correct spacing for the left missing lateral incisor. The patient was wearing ESSIX appliances and was looking for a symmetrical aspect and a pleasing full smile (Figure 1). She was requiring a minimally invasive approach as possible. Intra oral examination showed a peg lateral incisor in the right side which can complicate the treatment and compromises the symmetrical final aspect. Soft tissues were healthy and oral hygiene was evaluated as good. The edentulous ridge was measured and it was suitable for adequate dimensions of lateral incisor. The adjacent teeth were vital,