Semi-Sintered Medical Zirconia Ceramic Used for Denture CAM Processing

Abstract:

CAD/CAM technology has been widely applied in the field of oral restoration, which creates a revolutionary change in the pattern of traditional handmade denture and puts forward new demands on the past medical dental restorative material. The materials used for making dentures should own good machining properties and biocompatibilities. Medical zirconium ceramic have a broad prospect in the field of oral restoration because of its features are high strength, high toughness, good biocompatibility, high similarity of performance and aesthetic effect of processed dentures to real dentals. Dental restoration was obtained initially by NC machining using the feature that zirconium ceramic was not fully hardened but had a definite range of strength in the semi-sintered state. Experimental results shown that the ceramic denture machined by this processing has better surface quality and can satisfy requirements of oral restoration. Observation results shown that cutting surfaces were smooth, grinding cracks were tiny and uniform, and there were no obvious fracture gaps on edges and complex irregular surface of neck could be better reflected.

• Periodical: Key Engineering Materials (Volume 693)
• Pages: 597-604
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.693.597
• Online since: May 2016
• Authors: Xiao Bao Lei*, Feng Xie
• Keywords: Dental Restoration, Grinding, Molar Crown, Semi-Sintered, Zirconium Ceramic

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