Cerana--a direct ceramic inlay technique.
Ceramic materials provide aesthetic restorations which are able to withstand the oral environment but two appointments are needed to fabricate ceramic restorations by means of an indirect technique. However, single-visit systems are becoming available and a recent development, Cerana, utilises matched drills with pre-etched and silanated leucite inlays. The cavity is refined using one of three conical burs and a size- and shaped-matched conical inlay is cemented using a conventional restorative resin material. The final restoration consists of a leucite inlay surrounded by a small amount of composite resin. The exposed resin, being a restorative composite resin, has a higher filler loading than that of a luting cement and an overlap technique can be used to reduce the area of exposed surface resin. This paper describes the technique and illustrates some cases. The initial results are promising in terms of aesthetics, patient acceptance, occlusal wear and ease of use. The major clinical application of this new technique is the ability to restore a cavity with a leucite inlay at a single visit thereby offering a cost-saving alternative to current aesthetic restorations. The technique requires only a little more time than a direct placement composite restoration yet reduces polymerisation contraction, and the occlusal contacts can be placed on the ceramic surface, rather than on the composite resin, for longer-term stability.
Millar
B J
BJ
GKT Dental Institute, King's College, London. brian.millar@kcl.ac.uk
D000538:Aluminum Silicates; D002516:Ceramics; D003188:Composite Resins; D003737:Dental Cavity Preparation; D006801:Humans; D007284:Inlays / Q000379:methods*
D000538:Aluminum Silicates; C113675:Cerana; D003188:Composite Resins; C078519:leucite