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终身拥有健康的牙齿 就在不久以前,掉牙还被认为是随着年龄的增长而不可避免的事。对于我们的祖父母来说,假牙几乎如灰白头发一样司空见惯。但现在,专家们说
Lifelong Healthy Teeth It wasn’t long ago that tooth loss was considered inevitable with age. For our grandparents, dentures are almost as common as grey hair. But now, experts say