New strategy to improve velopharyngeal incompetence using CPAP and speech appliances.

1.在语音矫治器的放置条件下，无论是语音状态还是吹气状态，腭帆提肌(LVP)的活动均降低。结论：1.语言矫治器的放置和移除之间的LVP活动的差异可能为语音的腭咽闭合功能产生了储备能力。腭咽闭合功能通常可以通过放置语音矫治器来改变。因此，持续正压治疗可改善说话人的腭咽闭合功能。有实质性腭咽闭合不全的说话者和交界性腭咽闭合不全的说话者一样有效。CPAP对佩戴语音矫治器、PLP或语音灯泡的说话者的临床应用结果表明，CPAP的疗效可能依赖于语音矫治器对腭咽闭合的适应。也就是说，在语音矫治器适应性差的情况下，CPAP改善腭咽闭合功能的效果不如适应性好的语音矫治器那么明显。未来的研究应该澄清，与腭咽闭合情况相适应的语音矫治器是否通常可以有效地改善实质性的腭咽闭合不全。

1. In the placement condition of a speech appliance including a palatal lift and speech, bulb, levator veli palatini muscle (LVP) activity decreased in both condition of speech and blowing. The differential activity in LVP between placement and removal of a speech appliance might generate reserve capacity for velopharyngeal function for speech.2. Velopharyngeal function might be normally altered through placement of a speech appliance. Thus, continuous positive air pressure treatment for improvement of velopharyngeal function for speakers3. with substantial velopharyngeal incompetence could be effective as well as speakers with borderline velopharyngeal incompetence.4. The results of clinical application of CPAP for speakers wearing a speech appliance, a PLP or a speech bulb, showed that the efficacy for the CPAP is possible to dependent upon adaptation of a speech appliance to velopharyngeal. That is, in case of poor adapted speech appliance, the effect of CPAP to improve velopharyngeal function was not so clear as in case of a well adapted one.5. Future study should be warranted to clarify whether a well adapted speech appliance in relation to the circumstance of the velopharynx can commonly be effective to improve substantial velopharyngeal incompetence.