中老年人常见牙病,大多为牙痛、龋齿和牙周炎。据有关数据统计,90%的老年人患有龋齿(俗称虫牙),2/3的老年人患有不同程度的牙周病(牙齿周围支持组织的病损,可造成牙齿松动脱落)。现介绍几种防治牙病的食物,有兴趣者不妨一试。核桃有的人牙齿洁白而坚固,外表完整无缺,但一遇到酸 Common dental diseases in the elderly, mostly toothache, dental caries and periodontitis. According to the statistics, 90% of the elderly suffer from dental caries. Two-thirds of the elderly suffer from periodontal disease (loss of supportive tissues around the teeth and can cause the teeth to loosen and fall off). Now introduce several kinds of food to prevent dental problems, those who are interested may wish to give it a try. Some walnut teeth white and solid teeth, the appearance of intact, but one encountered acid