Zirconia-TZP and alumina--advanced technologies for the manufacturing of single crowns

Eur J Prosthodont Restor Dent. 1999 Dec;7(4):113-9.

Abstract

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aluminum Oxide
  • Bicuspid
  • Computer-Aided Design
  • Crowns*
  • Cuspid
  • Dental Bonding
  • Dental Marginal Adaptation
  • Dental Prosthesis Design*
  • Dental Stress Analysis
  • Dental Veneers
  • Humans
  • Materials Testing
  • Metal Ceramic Alloys* / chemistry
  • Surface Properties
  • Tensile Strength
  • Zirconium* / chemistry

Substances

  • Metal Ceramic Alloys
  • Zirconium
  • Aluminum Oxide
  • zirconium oxide