Electromyographic estimtion of incompetent lip

唇功能不全的肌电图评估

• 批准号: 08672366
• 负责人: YAMAGUCHI Kazunori
• 金额: $ 1.41万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08672366/
• 关键词: incompetent lip; clenching; electromyography; orthognathic surgery; open bite; オトガイ筋; 口唇の開閉時の筋活動; 歯列咬合と顎顔面

Part 1Young adult samples consisted of forty nine subjects with positive overjet and overbite, and seventeen with open bite. Two bipolar surface electrodes were attached to the skin of the upper and lower lips. The mean integrated amplitude of the EMG activity at mandibular rest position with the based on positive and negative values of the difference in integrated EMG activity of the mentalis muscle between two lip positions. Subjects who showed negative value was calssified as having competent lips and those with positive value were lip incompetent. The EMG activity of the mentalis muscle was indicative in sealing lips as compared to that of depressor of lower lip. All subjects in the open bite group hadn incompetent lips. The incompetent lips group showed steeper mandibular plane as well as large proclination of maxilary and mandibular incisors than the competent lips group. It was suggested that the difference of the EMG activity of the mentalis muscle at mandibular rest position w … More ith the lips in contact and apart offers an objective criterion for the evaluation of lip competence and that vertical dimension of the face as well as proclination of the incisors can affect lower lip function.Part 2Sample consisted of forty-nine subjects with positive overjet and overbite, and seventeen skeletal open bite subjects which received orthognathic surgery. EMG recording of lower lip and masticatory muscles was taken at rest and during clenching with the lips in contact and apart. EMG activities of the lower lip and cephalometric measurements were statistically compared between the competent and incompetent lips groups using analysis of variance (ANOVA). EMG activity of the lower lip during clenching with the lips in contact decreased in the incompetent lips subjects but not in the competent lips subjects and it was correlated (r= -0.910, -0.980) with that at rest position in the incompetent lips and open bite groups. It was found that the incompetent lips subjects showed distinct functional coordination between the lower lip and masseter muscle. Less

第一部分：49例覆盖和覆牙合阳性患者，17例开牙合阳性患者。将两个双极表面电极连接到上唇和下唇的皮肤。下颌静息位肌电活动的平均积分幅度是基于两个唇位间颏肌积分肌电活动差值的正负值。显示负值的受试者被归类为具有健全的嘴唇，而显示正值的受试者被归类为嘴唇机能不全。颏肌肌电图活动的指示性相比，在密封唇的下唇的抑制。开牙合组的所有受试者都有不全的嘴唇。唇功能不全组下颌平面较唇功能正常组陡，上下切牙前突较大。提示下颌静息位颏肌肌电活动的差异可能是由于下颌运动员在运动过程中，颏肌肌电活动的不同而引起的。 ...更多信息 第二部分：对49例正覆牙合患者和17例骨性开牙合患者进行了正颌外科手术治疗，并对正覆牙合患者和骨性开牙合患者的唇功能进行了比较。在休息时和紧闭双唇时记录下唇和咀嚼肌的肌电图。使用方差分析（ANOVA）对下唇肌电图活动和头影测量结果在正常和功能不全唇组之间进行统计学比较。唇功能不全组与正常组相比，在紧闭时下唇肌电活动降低，与静息位肌电活动相关（r=-0.910，-0.980）。结果发现，唇功能不全的受试者表现出明显的功能协调之间的下唇和咬肌。少

项目成果

山口 和憲: "口唇の機能と歯列咬合,および顎顔面形態の関係について 正被蓋群と逆被蓋群について" 広島大学歯学会雑誌. 28. 312-319 (1996)

Kazunori Yamaguchi：“唇功能、牙齿咬合和颌面形态之间的关系；关于正常被盖群和反向被盖群”广岛大学牙科学会杂志 28. 312-319 (1996)。

Kazunori Yamaguchi, Yuko Morimoto, Ram S.Nanda, Kazuo Tanne: "Lower lip activity during clenching in incompetent lips subjects." Journal of Indian Orthodontic Society. (in press) 29. 2 (1998)

Kazunori Yamaguchi、Yuko Morimoto、Ram S.Nanda、Kazuo Tanne：“嘴唇功能不全的受试者在咬紧过程中的下唇活动。”

山口和憲: "口唇の機能と歯列咬合,および顎顔面形態の関係について 正被蓋群と逆被蓋群について" 広島大学歯学会雑誌. 28・2. 312-319 (1996)

Kazunori Yamaguchi：“唇功能、牙齿咬合和颌面形态之间的关系；关于正常被盖群和反向被盖群”广岛大学牙科学会杂志 28・2（1996）。

Kazunori Yamaguchi, kazue Ito, Manami Ishida, Yuko Iwami, Sino Yoshida, Kazuo Tanne: "Association of the Electromyographic Lip activity with the Dento-facial structure in Adolescent sibjects with positive and negative overjets." Journal of Hiroshima Unive

Kazunori Yamaguchi、kazue Ito、Manami Ishida、Yuko Iwami、Sino Yoshida、Kazuo Tanne：“具有正负覆盖的青少年受试者中嘴唇肌电活动与牙面部结构的关联。”

Kazunori Yamaguchi: "Lower lip activity during clenching in incompetent lips subjects" Journal of Indian Orthodontic Society. 29・2. (1998)

Kazunori Yamaguchi：“嘴唇不健全的受试者咬紧时的下唇活动”，《印度正畸学会杂志》29·2（1998 年）。