tooth wear

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。

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。

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

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.

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；

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。

Tooth wear progresses throughout one's life.

牙齿磨耗（Tooth wear）贯穿人的一生。

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。

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。

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。

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。

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。

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