5 - 10岁，牙齿磨损程度加重，出现病牙症状。
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。
Tooth wear is defined as the loss of the tooth substance which is not caused by dental plague, caries and injuries.
当一组牙齿磨损后，可掉过头来使用另一组牙齿，从而提高了牙板的使用寿命。
After one set of teeth is abraded, the tooth-plate can be reversed so that the other set of teeth can be used, and therefore, the service life of the tooth-plate is increased.
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。
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.
通过156口调整井钻井试验，对比分析了刮刀钻头和牙轮钻头的钻进特性、牙齿磨损特性、井底流场特性及钻井效果。
Through drilling experiment in 156 adjustment Wells, the drilling behaviors, cutter wear, downhole jet flow field and drilling effect of drag bits and roller ones were comparatively analyzed.
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.
从水牛磨损的牙齿来看，它已经很老了，尽管还能伸伸腿，但看起来它已抬不动头了。
We could see from his worn teeth that he was veryold, and though he could move his legs, he couldn’t seem to lift his head.
磨牙和紧要牙齿(应激状态下会加剧)会导致牙齿过度磨损甚至出现裂缝。
Grinding or clenching your teeth (which can intensify if you're stressed) can cause excessive wear and even cracking and chipping.
给舌头打洞装舌钉常常会导致口腔感染，牙齿的磨损与破损，或是口腔外伤。
Tongue piercings have also been associated with infections, chipped or broken teeth, and gum trauma.
对于修复孩子们磨损的牙齿，这是一种理想的需要谨慎选择的方法。
It’s the perfect, discreet alternative to the braces our kids wear.
“你的牙医可以检查出你有没有磨牙，因为牙齿珐琅质的磨损区会是光滑的。”
"Your dentist can see if you're grinding, because areas of the tooth enamel will be worn smooth."
斯科菲尔德博士和他的研究小组用高清显微镜来对比研究室里培养的切叶蚁蚁蛹的牙齿和野外的切叶蚁已经磨损的牙齿。 他们发现蚁蛹的锯片比老龄切叶蚁的锯片锋利340倍。
Dr Schofield and his team used hi-tech microscopes to compare the pristine teeth of laboratory-reared pupae with the worn teeth of the wild forager ants.
这就意味着，这些不断生长的牙齿，可以有规律地脱落磨损部分，以保持边缘锋利。
This means the teeth, which grow continuously, can regularly shed damaged areas to keep a well-honed edge.
对于一个被认为为食用很多高磨损性食物的种群，胡桃钳子人的牙齿却只有很小的磨损迹象。
For a species that was supposed to be eating a lot of abrasive foods, Nutcracker Man had teeth that showed very little sign of pitting.
这些牙膏或牙粉含有粗槽的磨牙剂，使用龈线上的牙齿的磨损增加。
Sometimes they contain rough abrasives that cause increased abrasion of the teeth at the gum line.
在马的一生中，牙齿在咀嚼粗饲料和精加工饲料的过程中被自然磨损。
Throughout a horse's lifetime, its teeth wear naturally from eating roughage and processed feeds.
它们都有研磨作用，会磨损牙釉质，长此以往会导致牙齿敏感和发黑，因为牙釉质磨损会暴露出里面黄褐色的牙质。
They are abrasive and can wear your enamel away and in the long-term lead to sensitivity and darkening of your teeth as the enamel wears and the inner amber-coloured dentine becomes visible.
酸性物质会软化牙釉质，立即刷牙会磨损牙齿。
The tooth enamel is softened by the acid and brushing straight after will wear the teeth down.
啃东西已经不再为了磨损牙齿，或者填饱肚子，仅仅是为了咀嚼的口感，啃咬的乐趣了。
Eating is no longer something to wear the teeth, or fill his belly, just to chew the taste, chew the fun.
另一方面，硬毛牙刷刷，刷的积极可能导致经济衰退的牙龈和牙齿的珐琅质磨损，暴露根耦合表面。
On the other hand, a hard-bristled brush, coupled with vigorous brushing can result in recession of the gums and the abrasion of tooth enamel and exposed root surfaces.
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。
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.
象牙用于防御；和牙齿一样，它们也会磨损，或者脱落。
The tusks are used for defense, and, like teeth, they may wear down or be broken off.
结论：高氟低蛋白营养首先影响牙基质的发育，进一步影响矿化，从而使牙齿整体发育不良，过度磨损。
Conclusion: high fluoride and low nourishment would cause underdevelopment of tooth matrix firstly, then affect the calcification of matrix, finally deteriorate the quality of teeth.
结论：高氟低蛋白营养首先影响牙基质的发育，进一步影响矿化，从而使牙齿整体发育不良，过度磨损。
Conclusion: high fluoride and low nourishment would cause underdevelopment of tooth matrix firstly, then affect the calcification of matrix, finally deteriorate the quality of teeth.
应用推荐