Association between masticatory muscle activity and electroencephalographic activity during sleep

2017 Fiscal Year Final Research Report

• 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
• 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

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.

Free Research Field

歯科補綴学