The Clarification about Mechanism of Awake Bruxism using Neuroimaging Technique

神经影像技术阐明清醒磨牙症机制

• 批准号: 21791921
• 负责人: IIDA Takashi
• 金额: $ 1.75万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21791921/
• 关键词: 脳イメージング; クレンチング; fMRI; 経頭蓋磁気刺激法; 機能的磁気共鳴装置; 無意識; 脳イメージング; クレンチング; fMRI; 経頭蓋磁気刺激法; 機能的磁気共鳴装置; 無意識

The aim of this project was to compare the cerebral activity between fists and tooth clenching in first study, and to investigate the role of periodontal afferent inputs on cerebral activation pattern evoked by masticatory muscle in second study. First study showed that bilateral light fist clenching significantly activated the bilateral sensorimotor cortex, while light teeth clenching was significantly associated with activation of bilateral sensorimotor cortex, supplementary motor area, dorsolateral prefrontal cortex, and posterior parietal cortex. Second study showed that there was no difference in cerebral activity between during sham tooth tapping and tooth tapping. Our findings suggest that the cerebral activity during tooth clenching has specific pattern in the central nerve system and the influence of periodontal afferent inputs and associated jaw muscle activity is relatively minor compared to the rhythmic jaw movements.

该项目的目的是比较第一项研究中拳头和牙齿握紧之间的大脑活性，并研究了咀嚼肌肉在第二项研究中引起的牙周传入输入对大脑激活模式的作用。第一项研究表明，双侧轻拳头握紧显着激活了双侧感觉运动皮层，而浅牙夹紧与双侧感觉运动皮层，补充运动区域，背外侧前额叶皮层和后侧侧皮层的激活显着相关。第二项研究表明，假牙齿挖掘和挖掘牙齿的脑活动没有差异。我们的发现表明，与节奏的下巴运动相比，牙齿夹紧过程中的大脑活动在中央神经系统中具有特定的模式，并且牙周传入输入和相关的下颌肌肉活动的影响相对较小。