Sliding friction and wear of human teeth against biocompatible polyether ether ketone (PEEK) under various wear conditions
Sliding friction and wear of human teeth against biocompatible polyether ether ketone (PEEK) under various wear conditions
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DOI：
10.1016/j.wear.2021.204110
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发表时间：
2021-12
期刊：
影响因子：
5
通讯作者：
M. Kucher;M. Dannemann;R. Füßel;Marie-Theres Weber;N. Modler
中科院分区：
文献类型：
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作者：
M. Kucher;M. Dannemann;R. Füßel;Marie-Theres Weber;N. Modler
针对热塑性聚合物聚醚醚酮（PEEK）在牙科中的应用，对其摩擦磨损性能进行了分析。因此，PEEK对人类牙釉质/牙本质的摩擦系数和比磨损率进行了研究，在各种潮湿条件下。从9个下颌磨牙制备牙釉质和牙本质标本。通过使用具有边界膜润滑（去离子水）的块-环旋转测试配置来确定对应物的滑动摩擦以及材料损失。通过轮廓测量法测量材料损失。结果采用单因素方差分析（ANOVA）进行统计学分析。结果，牙齿样本的对立面显示出比PEEK制成的聚合物样本更高的硬度和更硬。在1 ~ 0.1 m/s的3种转速下，初始滑动摩擦系数在μ= 0.23-0.44之间变化，在1500 m的总滑动行程内，稳定值在μ= 0.54-0.58之间。PEEK的比磨损率为80±65.5 10-6 mm³/Nm，显著高于牙釉质/牙本质的系数为0.9±0.7 10-6 mm³/Nm（p< 0.01）。在大多数情况下，一个显着增加的平均表面粗糙度的牙齿样品后，摩擦学测试。一般而言，与PEEK的材料损失相比，研究获得的牙齿硬组织（牙釉质、牙本质）去除率较低。
For the application in dentistry, the friction and wear behaviour of the thermoplastic polymer polyether ether ketone (PEEK) was analysed. Therefore, the friction coefficient and specific wear rate of PEEK against human enamel/dentine was investigated under various wet conditions. The tooth specimens consisting of enamel and dentine were prepared from nine mandibular molars. The sliding friction as well as the material loss of the counterparts was determined by using a block-on-ring rotational test configuration with a boundary film lubrication (deionised water). The material loss was measured by profilometry. The results were statistically analysed by one-way analysis of variance (ANOVA). As a result, the counter surfaces of the tooth samples showed a higher hardness and were stiffer than the polymeric specimens made of PEEK. The initial sliding friction coefficient varied in the range of μ= 0.23-0.44 for the three investigated rotational velocities from 1 m/s to 0.1 m/s and the stationary values were measured in the range of μ= 0.54-0.58 for the total sliding path of 1500 m. The resulting specific wear rate of PEEK was significantly higher w s= 80±65.5 10-6 mm³/Nm than the coefficient of enamel/dentine w s= 0.9±0.7 10-6 mm³/Nm (p< 0.01). In most cases, a significant increase of averaged surface roughness of the tooth samples was determined after tribological tests. In general, the investigations obtained a low removal of dental hard tissue (enamel, dentine) compared to the material loss of PEEK.