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International Journal of Esthetic Dentistry  (English Edition)



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Int J Esthet Dent 4 (2009), No. 4     18. Nov. 2009
Int J Esthet Dent 4 (2009), No. 4  (18.11.2009)

Page 348-380, PubMed:20111760

Zirconia in Dentistry: Part 2. Evidence-based Clinical Breakthrough
Koutayas, Spiridon Oumvertos / Vagkopoulou, Thaleia / Pelekanos, Stavros / Koidis, Petros / Strub, Jörg Rudolf
An ideal all-ceramic restoration that conforms well and demonstrates enhanced biocompatibility, strength, fit, and esthetics has always been desirable in clinical dentistry. However, the inherent brittleness, low flexural strength, and fracture toughness of conventional glass and alumina ceramics have been the main obstacles for extensive use. The recent introduction of zirconia-based ceramics as a restorative dental material has generated considerable interest in the dental community, which has been expressed with extensive industrial, clinical, and research activity. Contemporary zirconia powder technology contributes to the fabrication of new biocompatible all-ceramic restorations with improved physical properties for a wide range of promising clinical applications. Especially with the development of computer-aided design (CAD)/computer-aided manufacturing (CAM) systems, highstrength zirconia frameworks can be viable for the fabrication of full and partial coverage crowns, fixed partial dentures, veneers, posts and/or cores, primary double crowns, implant abutments, and implants. Data from laboratory and clinical studies are promising regarding their performance and survival. However, clinical data are considered insufficient and the identified premature complications should guide future research. In addition, different zirconia-based dental auxiliary components (ie, cutting burs and surgical drills, extra-coronal attachments and orthodontic brackets) can also be technologically feasible. This review aims to present and discuss zirconia manufacturing methods and their potential for successful clinical application in dentistry.