采用自制的往复式牙刷磨耗试验机,对比研究了4种尼龙牙刷对牙齿颈部的磨损情况。结果表明,中健牌牙刷对牙齿磨损最小,黄鹤牌最大;牙刷刷毛的直径与其对牙齿的磨损有正相关关系;磨刷压力也影响牙刷对牙齿的磨损,压力增大,磨损也增大;磨料的存在与否明显地影响着牙刷对牙齿的磨损。 A self-made reciprocating toothbrush wear tester was used to compare the wear of four kinds of nylon toothbrush on the neck of the tooth. The results showed that Zhongjian brand toothbrush had the least wear on the teeth and the largest on the crane; the diameter of toothbrush bristles had a positive correlation with the wear on the teeth; the brushing pressure also affected the toothbrush's wear to the tooth, the pressure increased and the wear increased The presence or absence of abrasive significantly affects toothbrush wear on the teeth.