Tooth wear is popularly found in dental clinical practice.
牙齿磨耗临床十分常见。
By 3-5 years: All teeth may have tartar build-up and some tooth wear.
3 - 5岁，所有的牙齿上都有牙垢，一些牙发生磨损。
By 3-5 years: All teeth may have tartar build-up and some tooth wear.
5岁，所有的牙齿上都有牙垢，一些牙发生磨损。
Conclusion: Severe tooth wear lead to abnormal mandibular maximum excursions.
结论：牙齿重度磨耗导致异常的下颌边缘运动。
The first molar has the most serious tooth wear and the third molar was the lightest.
第一磨牙的磨耗程度最重，第三磨牙的磨耗程度最轻。
Objective: to study the influence of severe tooth wear on mandibular maximum excursions.
目的：研究牙齿重度磨耗对下颌边缘运动的影响。
In addition, the tooth wear and the abnormal cups and the root diseases were also scored.
另外，对牙齿磨耗症、畸形中央尖、根尖疾病等也分别作了记录。
Results: the stresses on the surface of the condyle increased obviously as the tooth wear aggravated.
结果：随着磨耗程度的加重，髁状突表面的应力增加较多。
Conclusion the 3-d computer assistant measure system can exactly accomplish the clinical tooth wear measurement.
结论：自行开发研制的计算机三维辅助测量法可以较精确、快速地实现牙磨耗量的测定。
Confined by the operation condition, intra-oral measurement can't make a precise result of tooth wear in a period.
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。
Tooth wear is defined as the loss of the tooth substance which is not caused by dental plague, caries and injuries.
牙齿磨损是指在没有菌斑、龋坏及外伤情况下牙体组织丧失的现象。
Methods The diagnosis and treatment process of 23 patients with dentition defect and severe tooth wear was retrospectively analysed.
方法对23例牙列缺损伴重度磨耗患者的临床诊治过程进行回顾性分析。
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。
AIM: to study the correlation between tooth wear and age as well as gender by investigating the state of average tooth wear on incisal and occlusion surfaces in general population.
目的：通过调查普通人群牙齿切缘及咬面的磨耗情况，研究牙齿磨耗与年龄和性别的关系。
To explore the effect of high fluoride and low protein on tooth development and clarify the mechanism of excessive tooth wear, and decalcification of incisors were researched by SEM.
为了探索高氟低蛋白对牙齿发育的影响 ，阐明牙齿过度磨损的机理 ，应用扫描电镜对第一、二切齿脱钙前的矿化及脱钙后的基质结构作了观察。
This work is a clinical case report of a patient presenting with marked tooth wear in all teeth, a reduction in the vertical dimension of occlusion, and fatigue in the muscles of mastication.
这项工作是一个在所有牙齿明显牙齿磨损，在咬合垂直距离减少病人的临床症状的情况提出报告，并在咀嚼的肌肉疲劳。
Steel tooth bit can increase the bit's stability and lower the tooth impact load, and enhance its wear resistance.
钢齿牙轮钻头增强了工作的平稳性，降低了牙齿的冲击载荷，使牙轮钻头的耐磨性能得到提高；
Poor tooth brushing techniques can harm your teeth - if you really scrub your teeth too hard, you will wear the sides of your teeth down, leaving V-shaped defects near the gum margins.
不恰当的刷牙方法会损害牙齿，如果你真的太用力刷牙，就会磨损牙齿边缘，在牙龈缘附近形成V字形缺口。
Gear tooth thickness at the site are unilateral wear, so gear can be rotated 180 degrees to use.
齿轮在齿厚部位都是单侧磨损，所以可将齿轮翻转180度使用。
The distribution of engaging efficiency, EHD oil film thickness and tooth face wear and their changes along with transmission parameters are presented.
给出了超环面行星蜗杆传动啮合效率、齿面磨损量和弹流油膜厚度的分布规律及其随传动参数的变化规律。
This means that wear is evenly distributed over the gears since each tooth on one gear touches on the other gear the same number of times.
这就意味着，由于一支齿轮上的每一个齿面将与另一个齿轮的齿面接触相同的次数，因此磨损面均匀的分布于齿轮的每一个齿上。
The tooth enamel is softened by the acid and brushing straight after will wear the teeth down.
酸性物质会软化牙釉质，立即刷牙会磨损牙齿。
Failure mode of tooth surface is varied such as teeth surface pitting, teeth wear, teeth bonding and teeth plastic deformations and so on.
齿面常见的失效形式有齿面点蚀、齿面磨损、齿面胶合和齿面塑性变形等。
Gear tooth face serious wear new gear should be changed, if only gear at both ends of the plane wear, can be in surface grinding machine on grinding repair light.
齿轮齿面严重磨损时应更换新齿轮，如果只是齿轮的两端平面磨损，可在平面磨床上磨削修光。
Further study on the correlation was provided that the changes of vibration signal were more sensitive than the changes of wear when the tooth surfaces of the gear broke down.
进一步关系研究发现，齿面发生故障时，相比磨损故障变化，振动信号反映故障的变化更敏感。
Special brass synchronizer tooth ring wear ability is poor in using.
特种黄铜同步器齿环在应用中耐磨性差。
This product is extracted from the aloe plant essence, fragrance aroma, taste unique, and the election Abrasive formula with high-grade silicon, reduction of tooth surface wear.
本产品从芦荟中提取植物精华素，馥郁芳香，口感独特，并选用高档硅磨料配方，减少牙齿表面磨损。
The parabolic gear is characterized by a new-type tooth profile, which may ensure very great load rating and fairly good unyielding, anti-sticking and wear - resisting properties.
抛物线齿轮是我们新近研究出来的一种新齿廊，它具有很高的抗接触、抗弯曲、抗胶合与抗磨损的能力。
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 ；
Result:The wear of acrylic resin tooth was greatest when against porcelain and then followed with composite resin and acrylic resin.
结果：丙烯酸树脂牙牙尖磨耗度由大到小分别为：陶瓷、复合树脂、丙烯酸树脂。
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