Satoh Y, Nagai E, Maejima K, Ohyama T, Ito S, Toyoma H, Ohwa M, Kobayashi E, Ohki K, Kaketani M
Department of Removable Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
J Nihon Univ Sch Dent. 1992 Dec;34(4):249-64. doi: 10.2334/josnusd1959.34.249.
An in vitro evaluation of abrasive wear resistance of high-strength denture (HS) teeth and wear of metal plates (Pd alloy) on the opposing side was conducted. A total of 8 types of teeth were used in the experiments including 3 types of HS teeth, 3 types of conventional plastic denture (PL) teeth, porcelain teeth and metal teeth (Pd alloy). Sliding-induced wear tests were conducted by sliding these teeth over the metal plates. Abrasive wear resistance of the teeth was evaluated in terms of wear depth and weight loss. A comparison of wear depth showed that the abrasive wear resistance of HS teeth was 4.7 times that of PL teeth, 0.7 times that of porcelain teeth and 8.3 times that of metal teeth. Weight loss showed that the abrasive wear resistance of HS teeth was 3.3 times that of PL teeth, 0.2 times that of porcelain teeth and 11.4 times that of metal teeth. The weight loss of the metal plates was minimal when they slid over HS teeth, but increased in the order PL teeth, porcelain teeth and metal teeth.
对高强度义齿（HS）牙齿的耐磨耗性以及对侧金属板（钯合金）的磨损进行了体外评估。实验共使用了8种类型的牙齿，包括3种HS牙齿、3种传统塑料义齿（PL）牙齿、瓷牙和金属牙（钯合金）。通过让这些牙齿在金属板上滑动进行滑动磨损试验。根据磨损深度和重量损失评估牙齿的耐磨耗性。磨损深度的比较表明，HS牙齿的耐磨耗性是PL牙齿的4.7倍、瓷牙的0.7倍、金属牙的8.3倍。重量损失表明，HS牙齿的耐磨耗性是PL牙齿的3.3倍、瓷牙的0.2倍、金属牙的11.4倍。当金属板在HS牙齿上滑动时，金属板的重量损失最小，但按PL牙齿、瓷牙和金属牙的顺序增加。
