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随着年龄的增长,老年人的生理性退变,口腔组织也逐渐表现衰老.牙周组织退行改变牙龈萎缩,牙齿出现松动、移位、脱落.有的甚至无一真牙存在,口腔医生称之为牙列缺失.牙齿是撕裂食物和粉碎食物并获得初步消化的一道门
With age, the physiological deterioration of the elderly, oral tissue also gradually aging.Patoral degeneration of the gingival tissue to change, the teeth appear loose, shift, fall off.Some even without a real tooth there, the dentist said It is a missing dentition.Teeth is a way to tear food and crush food and gain initial digestion