Zirconia-TZP and alumina--advanced technologies for the manufacturing of single crowns.
All-ceramic crowns based on Zirconia-TZP-frameworks should have advantages in comparison to copings of Alumina (PROCERA-AllCeram) because of their mechanical properties. Zirconia-TZP-frameworks were manufactured after optical digitising using a modified Precident-DCS-System. The mean fracture strength and the vertical marginal discrepancy of Zirconia-TZP-frameworks and Alumina-copings (PROCERA-AllCeram) were determined. Additionally the bonding strength of suitable veneering ceramics on pre-treated Zirconia-TZP surfaces was examined using the scratch test and the shear bonding strength. The results show that the bonding between Zirconia-TZP and the veneering ceramics as well as the precision of fit of the veneered crowns are comparable with established systems.
Luthardt
R G
RG
Medical Faculty Carl Gustav Carus, Department of Prosthetic Dentistry, Technical University of Dresden, Fetscherstrasse 74, 01307 Dresden, Germany.
Sandkuhl
O
O
Reitz
B
B
D000537:Aluminum Oxide; D001641:Bicuspid; D017076:Computer-Aided Design; D003442:Crowns; D003481:Cuspid; D001840:Dental Bonding; D018772:Dental Marginal Adaptation; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis; D003801:Dental Veneers; D006801:Humans; D008422:Materials Testing; D016876:Metal Ceramic Alloys / Q000737:chemistry; D013499:Surface Properties; D013718:Tensile Strength; D015040:Zirconium / Q000737:chemistry
D016876:Metal Ceramic Alloys; D015040:Zirconium; D000537:Aluminum Oxide; C028541:zirconium oxide