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Development of evaluating system of bruxism by imaging physiological and biochemical characteristics of masticator muscles.

通过咀嚼肌生理生化特征成像评价磨牙症评价系统的开发

基本信息

批准号：
20592216
负责人：
YUASA Kenji
金额：
$ 2.41万
依托单位：
Fukuoka Dental College
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2008
资助国家：
日本
起止时间：
2008 至 2010
项目状态：
已结题

项目摘要

1. Regarding to assess the properties of bruxism, we evaluated metabolism, and physiological and biochemical characteristics of masticator muscles using medical imaging. At first, it was evaluated whether a kind of mobilized masticator muscles by the difference of occlusal pattern was judged using MRI. We considered that mobilized masticator muscles could be identified using T2 value.2. We studied whether Doppler ultrasonography presenting blood flow in muscle was useful for evaluating the metabolism of masseter muscle as well as 31P-MR spectroscopy which was performed generally for evaluating metabolism of it as medical imaging. Doppler ultrasonograpy presented findings in correlating to ones of 31P-MR spectroscopy. It was suggested that contraction and recovery from fatigue of the muscle could be evaluated using Doppler ultrasonography, also.3. We evaluated whether change of apparant difussin coeficient (ADC) and T2 value by clenching suggested contraction of masseter muscle. ADC was sensitive to changes by clenching. We suggested that T2 valus and ADCs may be used to evaluated muscle fatigue and injuries that accompany bruxism.4. The aim of this study was to assess whether water diffusion changes could be detected by DT MRI performed at rest, and during jaw opening and closure. The eigen values for diffusion of the MM were sensitive to jaw position. Recruitment of muscle fibers, specific to jaw position, reflects the different changes in muscle diffusion parameters.

1. 为了评估磨牙症的性质，我们利用医学影像评估了咀嚼肌的代谢和生理生化特征。首先，通过MRI判断咬合模式的差异来判断是否是一种活动的咀嚼肌。我们认为可以利用T2值来识别动员的咀嚼肌。2．我们研究了呈现肌肉血流的多普勒超声检查是否有助于评估咬肌的代谢，以及通常用于评估咬肌代谢的医学成像的 31P-MR 光谱。多普勒超声检查提供了与 31P-MR 波谱相关的发现。有人建议还可以使用多普勒超声检查来评估肌肉的收缩和疲劳恢复。3。我们评估了咬肌引起的表观扩散系数（ADC）和 T2 值的变化是否表明咬肌收缩。 ADC 对紧握拳带来的变化很敏感。我们建议T2值和ADC可用于评估伴随磨牙症的肌肉疲劳和损伤。4．本研究的目的是评估在休息时以及下颌张开和闭合期间进行的 DT MRI 是否可以检测到水扩散的变化。 MM 扩散的特征值对颌位置敏感。特定于下颌位置的肌纤维的募集反映了肌肉扩散参数的不同变化。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Effect of clenching on T2 and diffusion parameters of the masseter muscle

DOI：
10.3109/02841850903280508
发表时间：
2010-02-01
期刊：
ACTA RADIOLOGICA
影响因子：
1.3
作者：
Chikui, Toru;Shiraishi, Tomoko;Yoshiura, Kazunori
通讯作者：
Yoshiura, Kazunori

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Evaluation of diffusion parameters of the masseter muscle at rest, opening and during clenching.

评估咬肌在休息、张开和咬紧时的扩散参数。

DOI：
发表时间：
2010
期刊：
影响因子：
0
作者：
Shiraishi T;Chikui T;Yoshiura K;Yuasa K
通讯作者：
Yuasa K

Evaluation of T2 values and apparent diffusion coefficient of the masseter muscle by clenching

咬肌T2值和表观扩散系数评估

DOI：
10.1259/dmfr/15607259
发表时间：
2011
期刊：
Dentomaxillofacial Radiology
影响因子：
3.3
作者：
Shiraishi T;Chikui T;Yoshiura K and Yuasa K
通讯作者：
Yoshiura K and Yuasa K

Assessment of the sequential change of the masseter muscle by clenching: A quantitative analysis of T1, T2, and the signal intensity of the balanced steady-state free precession

DOI：
10.3109/02841851003702180
发表时间：
2010-06
期刊：
Acta Radiologica
影响因子：
1.3
作者：
T. Chikui;T. Shiraishi;K. Tokumori;Daisuke Inatomi;M. Hatakenaka;K. Yuasa;K. Yoshiura
通讯作者：
T. Chikui;T. Shiraishi;K. Tokumori;Daisuke Inatomi;M. Hatakenaka;K. Yuasa;K. Yoshiura