Additional retentive forces are supplied by the natural action of the oral and facial musculature resting and acting against the polished surfaces of the dentures.

• 额外的固位由口腔颌面部肌肉在行使功能时静休息或施压于义齿抛光面而提供，这提示我们，这些肌肉作用部位的基托表面形态应自然的适合于肌肉以加强边缘封闭。