BIOENGINEERING OF GLASS-CERAMICS AND CERAMICS FOR DENTAL RESTORATION, pp. 169-178
Authors: W. Höland, V. Rheinberger, Ivoclar Vivadent AG, Schaan, Principality of Liechtenstein
Abstract: The challenge of bioengineering glass-ceramics and ceramics for the fabrication of dental restorations, such as inlays, onlays, veneers, dental crowns and dental bridges, is to fulfill the needs of patients. The methods and principles of developing metal-based and metal-free restorations according to bioengineering principles will be demonstrated and clinical applications will be shown. Current efforts are concentrated on developing materials for metal-free restorations. Bioengineering principles are employed with the objective of developing materials with properties that are close to those of natural teeth. Therefore, the translucency, color, mechanical properties and chemical durability of these biomaterials have to be close to or even better than the properties of natural teeth. The authors will report on methods for developing materials that show a combination of different properties. Solid state reactions in various chemical systems which are prepared according to different methods will be used to fulfill the demands. Glass-ceramics and ceramics demonstrating high strength and toughness but also translucency and tooth color will be presented. The preferred and modern technologies of molding and machining will be shown.