The analysis of tongue and soft palate movements during mastication and the relationship of these movements and dysphagia

咀嚼过程中舌、软腭运动分析及其与吞咽困难的关系

• 批准号: 13672090
• 负责人: IIDA Seiji
• 金额: $ 2.24万
• 依托单位: Osaka University Dental Hospital
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13672090/
• 关键词: Dysohaeia; palateslossus muscle; levator veli palatini muscle; palatal muscle; soft palate; chewing; mastication; 嚥下

(ア) This research was performed to clarify the contributions of soft palate muscles during food intake process by using an electromyographical technique.In sucking behavior, soft palate showed some different movements. In sucking using inspiration, soft palate was elevated by activation of the levator veil palatini muscles(LVP). In sucking using the oral negative pressure, soft palate was pulled down and contact with retro-tongue by activation of the palatoglossus muscle (PG), but in forced sucking using mouth-opening, LVP also showed its activities accompanied with activities of PG, to prevent the collapse of closed oral cavity. In chewing sequence, both PG and LVP showed phasic activities accompanied with jaw movements and these activities may contribute to position the food on molars. PG showed continuous activity in the chewing with water in the mouth. and this continuous activity may cause the inefficiency chewing, because these activities do not permit to large opening mouth.Our investigation concerning with the chewing position and the efficiency of the chewing showed the supine position decreases the efficiency of chewing and this trend was more clearly observed the chewing with water in oral cavity. This result may indicate that the PG activities observed in such condition may prevent the large opening mouth and the positioning of the foods in oral cavity. In conclusion, to know these activities of soft palate are very important to understand the mechanism of dysphagia.

（11）本研究采用肌电技术研究了软腭肌在食物摄取过程中的作用。在吸气吸吮时，通过激活腭帆提肌（LVP）使软腭升高。在口腔负压吸吮时，腭舌肌（PG）的活动将软腭向下拉，使软腭与舌后接触，而在张口强制吸吮时，LVP也伴随着PG的活动而活动，以防止闭合的口腔塌陷。在咀嚼序列中，PG和LVP都表现出与下颌运动相伴随的阶段性活动，这些活动可能有助于食物在磨牙上的定位。PG在含水咀嚼中表现出持续的活性。这种持续的活动可能会导致低效率的咀嚼，因为这些活动不允许大开口，我们关于咀嚼位置和咀嚼效率的调查显示，仰卧位降低了咀嚼效率，并且这种趋势在口腔中有水的咀嚼中更明显。这一结果可能表明，在这种情况下观察到的PG活性可能会阻止大开口和食物在口腔中的定位。因此，了解软腭的这些活动对了解吞咽困难的发生机制具有重要意义。

项目成果

S.Iida: "Soft palate movement during sucking behavior."Dysphagia. Vol.18. (in press) (2003)

S.Iida：“吸吮行为期间软腭运动。”吞咽困难。

S.Iida et al.: "Soft palate movement during sucking behavior"Dysphagia. 18(in press). 2003

S.Iida 等人：“吸吮行为期间的软腭运动”吞咽困难。

Iida, S., Harada, T, Okamoto M, Inada Y, Koso M, Masuda Y: "Soft palate movement during sucking behavior"Dysphasia. 18. 1-5 (2003)

Iida, S., Harada, T, Okamoto M, Inada Y, Koso M, Masuda Y：“吸吮行为期间的软腭运动”言语障碍。