open access

https://doi.org/10.11501/3182269

https://hdl.handle.net/2115/51498

Comparison of phosphocreatine concentration in the human masseter and medial pterygoid muscles by 31P-CSI

英語

metabolism

2001-03-23

Hokkaido University

11p.

Short title: Metabolism of Masseter and Medial Pterygoid muscles 共著者あり。共著者名:Minowa K., Inoue N., Yamaguchi T., Tamura T., Yoshida S., Kawasaki T.

The aim of this study is to compare phosphocreatine (PCr) concentrations of human masseter and medial pterygoid muscles by a recently developed localized MRS method, Chemical Shift Imaging (CSI). The characteristic spectra of phosphorus metabolites including PCr and β-ATP from the superficial part of the masseter (SM) and the deep part of the masseter (DM) and the medial pterygoid muscles (MPt) from 11 volunteers, 20-27 years-old were obtained. The study clearly demonstrated higher PCr/β-ATP in the SM and MPt than in the DM both in mean values (p<0.01) and in individual subjects. The results indicate that SM and MPt are power producers. There were no significant differences in the mean values of the PCr/β-ATP ratios in SM and MPt, however, the PCr/β-ATP ratios varied individually and the subjects could be divided into three distinct groups: values of MPt higher than SM (group A, 4 subjects); values of MPt almost equal to SM (group B, 3 subjects); and values of MPt lower than SM (type C, 4 subjects). There appears to be a close relationship between the PCr content as determined in the groups here and occlusai guidance.

2001-03-23

甲第5471号

博士(歯学)

博士論文

Version of Record