Figure 2: Drop in pressure of the saliva film as a result of a displacing force, causing impaction of the buccal mucosa and greatly increased retention (After Basker,R.M. &Davenport,J.C 1976).

 
  • 图2:脱位力施压于唾液薄膜,引起颊粘膜受压,大大增强了固位。
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