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Begg医师研究了石器时代人类的牙列,他提出:人的牙列是不稳定的,一生都在变化,牙齿不断地向近中和(牙合)向移动,以补偿牙齿邻面和(牙合)面或切缘的磨耗,现代人类食物的软化,使牙齿的磨耗减少。但这并不影响牙齿的生理性移动。 多年来,通过临床观察,看到不少人,尤其高龄人的牙齿生长,牙根暴露到根分歧部,出现冷、热、疼痛,更甚者出现牙龈松动,自行脱落,上下颌间垂直距离增高,面部随着年龄的增加而变长,这实际上就是牙齿在不断地生理性萌出,龈缘却保持相对稳定。通常在临床上被误认为牙龈退缩。
Begg, who studied the human dentition during the Stone Age, suggested that the human dentition is unstable and has been life-changing and that the teeth are constantly moving towards the mesial and occlusal to compensate for the orthosis and the teeth Cohesion) Face or cut edge of the wear and tear, the softening of modern human food, so that the reduction of tooth wear. But this does not affect the physiological movement of teeth. Over the years, through clinical observation, many people, especially elderly people, have seen tooth growth, root deformities exposed to root bifurcation, cold, heat, and pain. What's more, gums become loose, fall off on their own, and the vertical distance between the upper and lower jaws increases , The face grows longer with age, which is actually the teeth in the continuous physiological eruption, gingival margin has remained relatively stable. It is usually clinically mistaken for gingival recession.