Examination of efficacy of occlusal splints by means of a newly developed ultraminiature cordless EMG measurement system

通过新开发的超小型无线肌电图测量系统检查咬合夹板的功效

• 批准号: 17592012
• 负责人: YAMAGUCHI Taihiko
• 金额: $ 2.37万
• 依托单位: HOKKAIDO UNVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17592012/
• 关键词: bruxism; electromyography; cordless; temporomandibular disorders; occlusal splint; masseter muscle; sleep

We newly developed an ultraminiature cordless EMG measurement system, BMS-601 (BMS), in cooperation with Harada Electronic Industry Ltd. to enable the monitoring of nocturnal EMG of the masseter muscles to be performed with less burden of patients. To elucidate the efficacy of occlusal splints, nocturnal EMG of patients with sleep bruxism and temporomandibular disorders were examined.1. BMS-601The transmitter unit of BMS contains electrodes, an amplifier, A/D converter, a CPU, a battery and a transmitter. Amplified EMG digital data are transmitted to a removable CF card set in the receiver unit.2. Validity of BMS in the daytimeDuring tapping, maximum clenching and gum-chewing, distinct bursts were observed in EMG recorded by BMS as well as a conventional polygraph system (PG). RMS values of maximum clenching measured by BMS and PG showed a linear and significant correlation. When distance between the transmitter and receiver unit was 100 cm or less, no artifact signal was observed. It was suggested that the motion artifact of signals during BMS measurements is equal to or less than that during PG measurements during simulated sleep turn.3. Nocturnal EMGAn unplanned period was needed for alterations of structures such as the receiver antenna to eliminate unexpected liner-spike-shape artifact signals at the night time. Therefore, the number of the subjects whose nocturnal EMG data were compared was not sufficient. Nocturnal EMG measurements in successive nights at home became possible and the comparison between the EMG data with and without the splint became easy to be performed for the patient group. In some subjects, the nocturnal EMG bursts decreased when using occlusal splints, while no distinct change was found in some subjects. Though the difference among individuals was possibly involved in these findings, further examinations of many subjects are thought to be needed.

我们与原田电子工业株式会社合作新开发了超小型无线肌电图测量系统 BMS-601 (BMS)，可以减轻患者负担，对咬肌夜间肌电图进行监测。为了阐明咬合夹板的疗效，对睡眠磨牙症和颞下颌关节紊乱病患者进行夜间肌电图检查。 1． BMS-601BMS的发射器单元包含电极、放大器、A/D转换器、CPU、电池和发射器。放大的肌电图数字数据被传输到接收器单元中的可移动CF卡组。2．白天 BMS 的有效性在敲击、最大咬紧力和咀嚼口香糖期间，BMS 以及传统测谎系统 (PG) 记录的 EMG 中观察到明显的爆发。 BMS 和 PG 测量的最大咬紧力的 RMS 值显示出线性且显着的相关性。当发射器和接收器单元之间的距离为 100 cm 或更小时，没有观察到伪影信号。有人建议，BMS 测量期间信号的运动伪影等于或小于模拟睡眠轮次期间 PG 测量期间的信号运动伪影。 3．夜间肌电图需要一个计划外的时间来改变接收天线等结构，以消除夜间意外的线状尖峰状伪影信号。因此，进行夜间肌电图数据比较的受试者数量不足。连续几个晚上在家进行夜间肌电图测量变得可能，并且对于患者组来说，使用和不使用夹板的肌电图数据之间的比较变得很容易。在一些受试者中，使用咬合夹板时夜间肌电图爆发减少，而在一些受试者中没有发现明显的变化。尽管这些发现可能涉及个体之间的差异，但认为需要对许多科目进行进一步检查。

项目成果

超小型コードレスブラキシズム計測システムの開発

开发超紧凑型无线磨牙症测量系统

• 发表时间: 2006
• 期刊: 日本補綴歯科学会雑誌 50・115回特別号
• 作者: 山口泰彦;三上紗季;岡田和樹;松樹隆光;後藤田章人
• 通讯作者: 後藤田章人

Development of an ultraminiature cordless bruxism measurement system

超小型无线磨牙症测量系统的开发

• 发表时间: 2006
• 期刊: J Jpn Prosthodont Soc( Nihon Hotetsu Shika Gakkai Zasshi) 50・115th special issue
• 作者: Yamaguchi T;Mikami S;Okada K;Matsuki T;Gotouda A
• 通讯作者: Gotouda A