有牙时咀嚼压力籍牙周膜传达到牙槽骨,并可作为一种生理刺激以重建牙槽骨,一旦牙齿拔除,(牙合)力仅作用于牙槽骨表面,牙槽骨只能忍受一定程度的压力,长期戴义齿造成牙槽嵴萎缩。牙槽嵴萎缩有个体差异,在不同时期及不同部位亦有差异。Carlsson等指出大部份 Periodic chewing pressure teeth periodontal membrane transmitted to the alveolar bone, and can be used as a physiological stimulus to reconstruct the alveolar bone, once the tooth is removed, (occlusal) force only acts on alveolar bone surface, alveolar bone can only Endure a certain degree of pressure, long-term denture caused alveolar ridge atrophy. Alveolar ridge shrinkage individual differences in different periods and different parts are also different. Mostly pointed out by Carlsson et al