| Project/Area Number |
14571834
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
補綴理工系歯学
|
|---|
| Research Institution | HOKKAIDO UNIVERSITY |
|---|
Principal Investigator |
YAMAGUCHI Taihiko Hokkaido Univ., Medical Dental Hospital, Associate Professor, 医学部・歯学部附属病院, 助教授 (90200617)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TOTSUKA Yasunori Hokkaido Univ., Graduate School of Dental Medicine, Professor, 大学院・歯学研究科, 教授 (00109456)
SATOH Kaoru Hokkaido Univ., Medical Dental Hospital, Instructor, 医学部・歯学部附属病院, 助手 (40281828)
KOMATSU Kosetsu Hokkaido Univ., Graduate School of Dental Medicine, Instructor, 大学院・歯学研究科, 助手 (90271668)
MINOWA Kazuyuki Hokkaido Univ., Medical Dental Hospital, Lecturer, 医学部・歯学部附属病院, 講師 (30209845)
INOUE Nobuo Hokkaido Univ., Graduate School of Dental Medicine, Professor, 大学院・歯学研究科, 教授 (20091415)
|
|---|
| Project Period (FY) |
2002 – 2003
|
| Project Status |
Completed (Fiscal Year 2003)
|
| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2003: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2002: ¥2,900,000 (Direct Cost: ¥2,900,000)
|
|---|
| Keywords | blood flow volume / masticatory muscles / physical therapy / hot pack / myo-monitor / splint therapy / temporomandibular disorders |
|---|
| Research Abstract |
The purpose of this study was to clarify whether physical therapies and occlusal splints are effective against muscle fatigue of temporomandibular disorders (TMD) patients from the point of view of blood flow state.
<Methods>
Blood flow of masseter muscles were measured using 3-wave-length near-infrared spectroscopy, and the blood flow parameters were total hemoglobin volume (THb), oxygenated hemoglobin volume (OXHb), deoxygenated hemoglobin volume (deOXHb), and oxygen saturation level (StO2). Subjects for the physical therapies were healthy subjects with no history of muscle pain in the masticatory system, while subjects for the splint therapy were TMD patients with masticatory muscle symptoms who used stabilization splints. The physical therapies applied were 20-minite hot pack and 30-minite myo-monitor.
<Results and discussion>
1)THb,OXHb and StO2 after the hot pack application were significantly larger than those during resting. The deOXHb showed no significant difference between the values before and after the hot pack application. The results suggest that the blood flow state of human masseter muscles can be influenced by a hot pack, and that the effect of hot pack therapy is to increase regional blood volume and that it creates the advantageous conditions for aerobic energy metabolism.
2)There was no no significant difference between the values before and after myo-monitor application in all parameters of blood flow.
3)During resting, mean values of StO2 with the splint were significantly larger than those without the splint During and after clenching, THb with the splint was significantly larger than that without the splint. The results suggest that the blood flow of masseter muscles can be influenced by wearing stabilization splints in the short term. However, effect of longtime using of splints is still unknown. Further studies on longitudinal change in blood flow stale of masticatory muscles in wearing splints are needed.
|
