A Study on Hight-strengh Denture Teeth

Part 2. Wear Resistance of Posterior Artificial Teeth against Metal

Abstract

Hight-strength denture teeth (hereafter referred to as HS teeth) were developed to improve hardness and wear resistance of the conventional plastic denture teeth, while retainingtheir feature of easy occlusal adjustment.
The objective of this study was to evaluate abrasive wear resistance of HS posteriorteeth. We conducted the two-body abrasive wear test and measured teeth wear depth usingeight types of posterior artificial teeth as one body, measured metal wear volume using Pd-Au-Agalloy plates as another one body.
The result of the two-body abrasion wear test revealed that the HS teeth have 4.7timesgrater abrasive wear resistance than conventinal plastic teeth, 0.7times grater than porcelaintooth, 8.3times grater than metal tooth. It was also found out that metal wear contact with HSteeth is smallest abrasion wear volume compare with another metal wear.