A study on high-strength denture teeth. Part I. Wear resistance of anterior artificial teeth.

High-strength denture teeth (hereafter referred to as HS teeth) were developed to improve hardness and wear resistance of the conventional plastic denture teeth, while retaining their feature of easy occlusal adjustment.The objective of this study was to evaluate wear resistance of HS teeth. We conducted the wear test and measured surface roughness, using six types of anterior artificial teeth; ie.three types of HS teeth and three types of conventional plastic denture teeth (hereafter referred to as PL teeth) which served as the control.The result of the toothbrush abrasion test revealed that the HS teeth have about 5 times grater wear resistance than the conventional PL teeth. It was also found out that the type of artificial teeth and the number of wear-testing strokes made a significant influence on the surface roughness of artificial teeth.(P<0.05)