You can see the location of his mouth incisor teeth longer, and will be caused by teething.
你看他嘴里门牙位置要长牙了,长牙也会引起的。
Now that patients are keeping their own teeth longer, they are becoming more aware of the appearance of their teeth.
现今每个人都希望能够保持牙齿永恒不朽,所以更会注重牙齿外观上及结构上的完整。
The proportion of elderly patients is increasing from year to year because people are keeping their teeth longer nowadays.
由于目前人们的牙齿寿命更长,因此老年患者的比例逐年增长。
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