tooth wear

Secondly, as a result of tooth thickness in the direction of tooth wear, so that active and passive gear mesh gap increased.

其次，由于轮齿在齿厚方向的磨损，使主、被动齿轮的啮合间隙增大。

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Tooth Wear of the population in eolithic age from Banpo Museum

半坡博物馆馆藏六千年前人颌骨牙齿的磨耗状况分析

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The investigation on the degree of tooth wear in elderly people

中老年人牙磨耗程度的临床调查

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Method: 1033 adults in Shanghai were clinically examined according to the tooth wear index ( TWI) and questionnaires were completed.

方法：对1033名上海市成年人进行牙磨损指数（TWI）的检查，同时填写调查问卷。

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The specimens made from Bayer tooth, thermosetting plastic, copper base alloy, titanium and its alloy have relatively good wear resistance as well and are thus idea prosthetic materials.

拜尔牙、热固塑料、铜基合金、钛及钛合金是较为理想的牙科修复材料；

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Users wear a specially designed headband which is hooked up to a Blue tooth device that wirelessly sends commands to a Nokia N73 mobile phone.

用户需要佩戴一个连接蓝牙设备的特制头部饰带，通过该装置向诺基亚N73手机发送无线信号，然后回应大脑发出的信号。

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The results show that in the case of the same cutting resistance, pick-shaped teeth enjoys advantages over knife-shaped teeth, as a result of it better combined performances, such as freedom of fragment, the lower tooth cost and wear-proof.

结果表明：在截割阻力相同的情况下，镐形齿具有不易被击碎、齿耗低、耐磨等优点，其综合性能优于刀形齿。

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Objective : To investigate the metal-porcelain in the fixed prosthesis treatment of advanced tooth wear.

目的: 观察金属烤瓷牙修复面重度磨耗的临床治疗效果.

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Confined by the operation condition, intra-oral measurement can't make a precise result of tooth wear in a period. Conclusions: The 3-d computer assistant measure system can accomplish the analysis and measurement to the tooth wear, and further research in clinical application is required.

而口内测量由于操作的限制，很难实现对一定时期内牙磨耗量的精确测量。结论：该系统能进行牙磨耗图像的三维分析计算，其临床广泛的推广应用还有待于进一步研究。

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Tooth wear progresses throughout one's life.

牙齿磨耗（Tooth wear）贯穿人的一生。

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Objective: To investigate the rules and trends of tooth attrition by studying the tooth wear of population in Neolithic Age from banpo museum.

目的：调查六千年前新石器时期古人牙齿的磨耗状况，以探寻牙齿磨耗的规律及其演化发展趋势。

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Conclusions: The 3-d computer assistant measure system can accomplish the analysis and measurement to the tooth wear, and further research in clinical application is required.

结论：该系统能进行牙磨耗图像的三维分析计算，其临床广泛的推广应用还有待于进一步研究。

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The term of tooth wear ( TW) is used to describe the loss of hard tooth tissue caused by friction between tooth occlusal facing or tooth facing and food during masticatory movement and non-masticatory movement under no occurrence of dental caries and external injury.

牙齿磨耗是指在没有龋齿及外伤情况下，牙齿在咀嚼运动和非咀嚼运动过程中，由于牙面与牙面间摩擦、牙面与食物间摩擦，牙齿硬组织的丧失。

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