口蓋裂術後鼻咽腔閉鎖不全症例における発音時の口蓋帆挙筋の疲労に関する研究 : 健常者との相違 Levator muscle fatigue during phonation in patients with velopharyngeal incompetence after surgery for cleft palate : Differences from normal subjects

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著者

    • 野原 幹司 NOHARA Kanji
    • 大阪大学歯学部附属病院顎口腔機能治療部 Division for Oral-Facial Disorders, Osaka University Dental Hospital
    • 舘村 卓 TACHIMURA Takashi
    • 大阪大学大学院歯学研究科高次脳口腔機能学講座顎口腔機能治療学教室 Division for Oral and Facial Disorders, Department of Functional Oral Neuroscience, Osaka University Graduate School of Dentistry
    • 和田 健 WADA Takeshi
    • 大阪大学大学院歯学研究科高次脳口腔機能学講座顎口腔機能治療学教室 Division for Oral and Facial Disorders, Department of Functional Oral Neuroscience, Osaka University Graduate School of Dentistry
    • 尾島 麻希 OJIMA Maki
    • 大阪大学大学院歯学研究科高次脳口腔機能学講座顎口腔機能治療学教室 Division for Oral and Facial Disorders, Department of Functional Oral Neuroscience, Osaka University Graduate School of Dentistry
    • 小谷 泰子 KOTANI Yasuko
    • 大阪大学大学院歯学研究科高次脳口腔機能学講座顎口腔機能治療学教室 Division for Oral and Facial Disorders, Department of Functional Oral Neuroscience, Osaka University Graduate School of Dentistry
    • 佐々生 康宏 SASAO Yasuhiro
    • 大阪大学大学院歯学研究科高次脳口腔機能学講座顎口腔機能治療学教室 Division for Oral and Facial Disorders, Department of Functional Oral Neuroscience, Osaka University Graduate School of Dentistry

抄録

The purpose of this study was to examine whether the levator veli palatini muscle (LVP) in patients with velopharyngeal incompetence who have undergone surgery for cleft palate is more easily fatigued than that of normal subjects during speech. Five patients with postsurgical cleft palate who were identified to have borderline velopharyngeal incompetence on nasopharyngeal fiberscopy were studied. Five normal subjects served as control. Each subject was asked to pronounce/pu/more than 50 times at a rate of one time per second. Electromyograms (EMG) of the LVP were recorded at a sampling rate of 2000/sec. The mean power frequency (MPF) of one syllable was obtained by power spectral analysis with an analytic window 1 second in width. In all normal subjects, the slopes of the regression line relating the MPF of the LVP EMG to the syllable number were slightly, but not significantly negative. However, in all patients with borderline velopharyngeal incompetence, the slopes of the regression line were significantly negative. These findings revealed that the LVP of speakers with borderline velopharyngeal incompetence was more easily fatigued than that of normal speakers during repetition of syllables. This study suggests that the fatigability of the LVP might be one cause of borderline velopharyngeal incompetence after surgery in patients with cleft palate.

収録刊行物

  • 日本口腔外科学会雑誌  

    日本口腔外科学会雑誌 50(8), 455-460, 2004-08-20 

    Japanese Society of Oral and Maxillofacial Surgeons

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各種コード

  • NII論文ID(NAID)
    10018619346
  • NII書誌ID(NCID)
    AN00189163
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00215163
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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