Prosthodontic Insights Newsletter

October 1999 Volume 12, Number 2

Continues..

An Investigation of Enamel Wear Opposing
Procera® AllCeram Aluminium Oxide Core
Wilson et al

Fifteen samples of Procera® AllCeram core material were tested against enamel in a custom wear apparatus with human saliva. Silicone impression techniques were used to record the before and after sample profiles. Measurements with a stereomicroscope (64x) showed that wear for the abraded samples ranged from 90 + 180 mm, 15-60 mm for the polished and 210-315 mm for the glazed. When the Procera® aluminium oxide core is exposed and in contact with enamel, wear is reduced when the surface is polished with Brasseler Dialite System.
J Dent Res 1996 75 (spec issue) abstract 393.

Hacker et al	Mean wear materials opposed by enamel sample	Mean wear of opposed enamel
Olympia gold	0.32 um	9.0 um
AllCeram porcelain	4.3 um	60 um
Ceramco porcelain	3.7 um	230 um

Hacker CH, Wagner WC, Razzoog ME. An in vitro investigation of the wear of enamel on porcelain and gold in saliva. J Prosth Dent 1996; 75: 14-17.