在国外,有一种“牙齿即名片”的说法。人与人交往时,张开嘴,笑一下,相互间就可以判断出对方来自怎样境况的家庭,过着怎样水准的生活。“明眸皓齿”似乎在某种层面已成为个人教养、地位和财富的象征。正因如此,任谁都想始终拥有一口健康、美观的牙齿。但其实,衰老是人体新陈代谢的必然过程,牙齿同样也不例外,我们周围“老掉牙”的朋友就不胜枚举。不过,人类牙齿的实际寿命可达120年。这意味着,若保护得好,注意‘抗衰老’,一口好牙几乎可以陪 Abroad, there is a “teeth that card ” argument. When people communicate with each other, open your mouth, smile, each other can judge each other from what situation the family, living a standard of living. “Bright eyes white teeth ” seems to have become a symbol of personal rearing, status and wealth in some aspects. Because of this, no one wants to always have a healthy, beautiful teeth. But in fact, aging is the inevitable process of human metabolism, the same is not the case of teeth, around us, “old friends” can not be enumerated. However, the actual life of human teeth can reach 120 years. This means that if protected well, pay attention to ’anti-aging’, a good tooth can almost accompany