...示了维持呼吸道通畅的常用 三种方法（Three maneuvers）: 头后仰（Head Tilt）、抬举下颌（Chin lift）和前托下颌 （Jaw thrust）。 图13-8 图13-9 怀疑有颈椎损伤时应当保持头中立位，有人认为 Chin lift 和 Jaw thrust 均可能引起 - 139 - 颈椎移位。
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为了基托均匀分散牙合力，这需要两侧上下颌尽可能多的人工牙在相互滑动的过程中有接触关系。
For the forces to be distributed throughout the denture bases, there need to be contacts between as many teeth as possible as they glide over each other, and on both sides of the arch.
目的分析下颌全口义齿软衬前后的义齿基托组织面位移情况，研究其对义齿稳定性的影响。
Objective To study the stability of mandibular complete denture with soft denture liner by means of investigating the displacement of tissue surface of the base plate.
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