Association between masticatory muscle activity and electroencephalographic activity during sleep

• Project/Area Number: 26861654
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Showa University
• Principal Investigator: Ono Yasuhiro 昭和大学, 歯学部, 助教 (70514876)
• Research Collaborator: TAKABA Masayuki ; ABE Yuka ; YOSHIDA Yuya ; NAKAMURA Hirotaka ; NAKAZATO Yukari
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 睡眠時ブラキシズム / 脳波 / EEG / PSG / 睡眠ポリグラフ検査 / 咀嚼筋筋電図 / EMG / 脳機能 / 睡眠ポリグラフ / 機能的磁気共鳴装置

Outline of Final Research Achievements

Sleep bruxism (SB) is defined as a repetitive jaw muscle activity characterized by clenching or grinding of the teeth, which is classified as a sleep-related movement disorder according to the American Academy of Sleep Medicine. The aim of this study was to investigate the association between jaw muscle activity and electroencephalographic activity during sleep. The results showed that the sleep efficiency of SB group (94.2%) was similar to that of control group (94.9%). The proportion of Stage N1 and REM of SB group was slightly higher than that of control group, although there was not significant difference. These results indicated that the electroencephalographic activity of SB group was comparable with that of control group within the frame of this study.

Research Products

• [Journal Article] Association between patterns of jaw motor activity during sleep and clinical signs and symptoms of sleep bruxism. (2016)
  • Author(s): Yoshida Y, Suganuma T, Takaba M, Ono Y, Abe Y, Yoshizawa S, Sakai T, Yoshizawa A, Nakamura H, Kawana F, Baba K.
  • Journal Title: J Sleep Res. Volume: 印刷中 Issue: 4 Pages: 415-421
  • DOI: 10.1111/jsr.12481
  • Peer Reviewed
• [Presentation] 簡易睡眠検査装置による睡眠時ブラキシズムの測定 (2017)
  • Author(s): 中里友香理，高場雅之，吉田裕哉，安部友佳，小野康寛，葭澤秀一郎，中村浩崇，菅沼岳史，馬場一美
  • Organizer: 第30回日本顎関節学会学術大会
• [Presentation] Accuracy of newly developed portable PSG device for detection of sleep bruxism-related masseter EMG muscle activity (2017)
  • Author(s): Nakazato Yukari，Takaba Masayuki，Yoshida Yuya，Abe Yuka，Ono Yasuhiro，Yoshizawa Shuichiro，Nakamura Hirotaka，Kawana Fusae，Suganuma Takeshi，Kato Takafumi，Baba Kazuyoshi
  • Organizer: 14th World Sleep 2017, Joint Congress of World Association of Sleep Medicine and World Sleep Federation
  • Int'l Joint Research
• [Remarks] Lilitory: 昭和大学学術業績リポジトリ
  • URL: https://meta.lilitory.showa-u.ac.jp