Satoh Y, Ohtani K, Maejima K, Morikawa M, Matsuzu M, Nagai E, Toyoma H, Ohwa M, Ohki K, Kaketani M
Department of Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
J Nihon Univ Sch Dent. 1990 Dec;32(4):247-58. doi: 10.2334/josnusd1959.32.247.
High-strength denture teeth (HS teeth) were developed in order to improve the hardness and wear resistance of conventional plastic denture teeth (PL teeth), while retaining their feature of easy occlusal adjustment. The objective of this study was to evaluate the abrasive wear resistance of HS teeth. We conducted wear tests and measured surface roughness using six types of anterior artificial teeth, i.e., three types of HS teeth and three types of PL teeth, the latter serving as the control. The results of the toothbrush abrasion test revealed that the HS teeth had about 5 times greater wear resistance than the PL teeth. It was also found that the type of artificial teeth and the number of abrasive wear-testing strokes had a significant (P less than 0.05) influence on the surface roughness of artificial teeth.
高强度义齿牙（HS牙）是为了提高传统塑料义齿牙（PL牙）的硬度和耐磨性而研发的，同时保留其易于咬合调整的特性。本研究的目的是评估HS牙的耐磨耗性。我们使用六种类型的前牙人工牙进行了磨损测试并测量了表面粗糙度，即三种类型的HS牙和三种类型的PL牙，后者作为对照。牙刷磨损试验的结果表明，HS牙的耐磨性比PL牙高约5倍。还发现人工牙的类型和磨耗测试行程次数对人工牙的表面粗糙度有显著（P小于0.05）影响。
