Properties and Clinical Application of Three Types of Dental Glass-Ceramics and Ceramics for CAD-CAM TechnologiesReportar como inadecuado


Properties and Clinical Application of Three Types of Dental Glass-Ceramics and Ceramics for CAD-CAM Technologies


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Ivoclar Vivadent AG, Bendererstr. 2, LI-9494 Schaan, Principality of Liechtenstein





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Abstract The main properties mechanical, thermal and chemical and clinical application for dental restoration are demonstrated for three types of glass-ceramics and sintered polycrystalline ceramic produced by Ivoclar Vivadent AG. Two types of glass-ceramics are derived from the leucite-type and the lithium disilicate-type. The third type of dental materials represents a ZrO2 ceramic. CAD-CAM technology is a procedure to manufacture dental ceramic restoration. Leucite-type glass-ceramics demonstrate high translucency, preferable optical-mechanical properties and an application as dental inlays, onlays and crowns. Based on an improvement of the mechanical parameters, specially the strength and toughness, the lithium disilicate glass-ceramics are used as crowns; applying a procedure to machine an intermediate product and producing the final glass-ceramic by an additional heat treatment. Small dental bridges of lithium disilicate glass-ceramic were fabricated using a molding technology. ZrO2 ceramics show high toughness and strength and were veneered with fluoroapatite glass-ceramic. Machining is possible with a porous intermediate product. View Full-Text

Keywords: biomaterials; glass-ceramics; ceramics; clinical applications; metal-free; CAD-CAM; dentistry biomaterials; glass-ceramics; ceramics; clinical applications; metal-free; CAD-CAM; dentistry





Autor: Christian Ritzberger * , Elke Apel, Wolfram Höland, Arnd Peschke and Volker M. Rheinberger

Fuente: http://mdpi.com/



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