Tooth wear is defined as the loss of the tooth substance which is not caused by dental plague, caries and injuries.(牙齒磨損是指在沒有菌斑、齲壞及外傷情況下牙體組織喪失的現象。)

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.(本產品從蘆薈中提取植物精華素，馥郁芳香，口感獨特，并選用高檔硅磨料配方，減少牙齒表面磨損。)

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：通過調查普通人群牙齒切緣及咬面的磨耗情況，研究牙齒磨耗與年齡和性別的關系。)

This paper introduces the methods of diagnosing the tooth-wear through the spectrum analysis of gear noise.(本文探討了用齒輪噪聲頻譜分析來診斷齒輪磨損程度的方法。)

Gear tooth thickness at the site are unilateral wear, so gear can be rotated 180 degrees to use.(齒輪在齒厚部位都是單側磨損，所以可將齒輪翻轉180度使用。)

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輕。)

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.(這就意味著，由于一支齒輪上的每一個齒面將與另一個齒輪的齒面接觸相同的次數，因此磨損面均勻的分布于齒輪的每一個齒上。)

Conclusion: Severe tooth wear lead to abnormal mandibular maximum excursions.(結論：牙齒重度磨耗導致異常的下頜邊緣運動。)

By 3-5 years: All teeth may have tartar build-up and some tooth wear.(5歲，所有的牙齒上都有牙垢，一些牙發生磨損。)

Tooth wear is popularly found in dental clinical practice.(牙齒磨耗臨床十分常見。)