1. Zirconia as a ceramic biomaterial;Piconi;Biomaterials,1999
2. Clinical trials in zirconia: a systematic review;Al-Amleh;J Oral Rehabil,2010
3. Vollkeramische Systeme;Gehre,2008
4. 3M ESPE Product information: LavaTM Zirconia Scientific Facts. Online. 2008. Available from: http://multimedia.3m.com/mws/mediawebserver?mwsId=66666UuZjcFSLXTtmxMtoxftEVuQEcuZgVs6EVs6E666666.
5. Vident Vita In-Ceram YZ: Online. 2010. Available from: http://vident.com/products/cadcam/vita-in-ceram-yz/.