Craig R G, Powers J M
Int Dent J. 1976 Jun;26(2):121-33.
Wear may result from physiological or pathological conditions and may be desirable, as in the reduction of an overcontoured restoration, or undesirable as in the production of cervical abrasion cavities. A variety of methods, including clinical testing, the use of wear machines and the measurement of related properties such as hardness or coefficient of friction have been used to investigate wear of tooth tissue and of dental materials. Because these methods may not reveal the nature of the wear process recent work has been directed to the study of surface failure resulting from a single sliding contact. Many clinical studies have been conducted but they are time consuming and difficult to quantify, nor do they allow of evaluation of different parameters contributing to the wear. Laboratory simulation of wear has been shown to be valuable in comparing materials of the same group but between-group comparisons may give anomalous results. The most rewarding studies have been those using a single or small number of passes of a suitable abrading point over the material since these permit determination of the actual process by which wear is produced.
磨损可能由生理或病理状况引起，可能是可取的，比如过度凸形修复体的减少；也可能是不可取的，比如颈部磨损龋洞的产生。已经采用了多种方法来研究牙齿组织和牙科材料的磨损，包括临床测试、使用磨损试验机以及测量相关性能，如硬度或摩擦系数。由于这些方法可能无法揭示磨损过程的本质，近期的研究工作已转向对单次滑动接触导致的表面失效的研究。已经进行了许多临床研究，但这些研究耗时且难以量化，也无法对导致磨损的不同参数进行评估。磨损的实验室模拟已被证明在比较同一组材料时很有价值，但组间比较可能会得出异常结果。最有价值的研究是那些使用合适的磨蚀点在材料上单次或少量通过的研究，因为这些研究能够确定产生磨损的实际过程。
