The changes of jaw bone, especially the size and position of the mandible have more effects than the displacement of teeth on the oropharyngeal airway dimension and the hyoid bone level position. 颌骨的变化尤其下颌骨的大小和位置变化较牙齿的位移对上气道口咽部矢状径及舌骨水平位置的变化影响大。
The oropharyngeal airway dimension can not be changed obviously by extraction orthodontic treatment, however extraction treatment will affect the nasopharyngeal airway dimension and the hyoid bone level position. 拔牙矫治未引起口咽气道(OPA)大小的明显变化,但拔牙矫治对上气道鼻咽部及舌骨水平向位移有影响。
Clinical observation of effect of a self-made oropharyngeal airway 自制急救口咽通气管及临床效果观察
The minimum cross-section of the oropharyngeal airway most located in the end of the soft palate or near the base of the tongue, oropharyngeal airway presents a narrow middle, two wide funnel-shaped form. 口咽气道(OPA)的最小截面多位于软腭尾处或舌根处附近,提示口咽气道(OPA)呈现一个中间窄,两头宽的漏斗型形态。
Method : Taken away the flat iron circle used as a tooth pad from an ordinary oropharyngeal airway, the new device is made by fixing an air pipe in size 8 or 9 at the connector. 方法:取出口咽通气管作牙垫用的扁形铁圈,插入8号~9号一次性气管导管接头。