| Project/Area Number |
14370610
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
病態科学系歯学(含放射線系歯学)
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| Research Institution | Aichi Gakuin University |
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Principal Investigator |
ARIJI Eiichiro Aich-Gakuin University, School of Dentistry, Department of Oral and Maxillofacial Radiology, Professor, 歯学部・歯科放射線学講座, 教授 (00150459)
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| Co-Investigator(Kenkyū-buntansha) |
ARIJI Yoshiko Aichi-Gakuin University, School of Dentistry, Department of Oral and Maxillofacial Radiology, Assistant Professor, 歯学部・歯科放射線学講座, 講師 (60232063)
SAKUMA Shigemitsu Aich-Gakuin University, School of Dentistry, Department of Fixed Prosthodontics, Assistant Professor, 歯学部・補綴学第三講座, 講師 (80271386)
IZUMI Masahiro Aichi-Gakuin University, School of Dentistry, Department of Oral and Maxillofacial Radiology, Assistant Professor, 歯学部・歯科放射線学講座, 助教授 (40212956)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥14,000,000 (Direct Cost: ¥14,000,000)
Fiscal Year 2004: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2003: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2002: ¥10,400,000 (Direct Cost: ¥10,400,000)
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| Keywords | masticator muscle / blood flow / edema / temporomandibular disorder / ultrasonography / near-infrared spectroscopy / transcutaneous electrical nerve stimulation / 酸素飽和度 |
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| Research Abstract |
The basic hemodynamics of masseter muscle was investigated to clarify the cause of pain and fatigue of masseter muscle. The first purpose of this investigation is to confirm the application of near infrared spectroscopy (NIRS) in the human masseter muscle. Hemodynamics of masseter muscle is examined regarding the point of sensor positioning, circadian, ultradian rhythms, intergeneration sex difference and maximum voluntary clenching using NIRS. Simultaneously ultrasonographic appearances were studied in female patients with temporomandibular disorder (TMD) associated with myofascial pain in comparison with healthy volunteers. The ultrasonographic features were clarified and they might be related to muscle edema. Furthermore, changes of hemodynamics were examined with a NIRS after transcutaneous electrical nerve stimulation (TENS). In clinical cases, we verified efficacy of stabilization splint for patients with TMD. Coronoid process hyperplasia were also investigated with CT. In conclusion, the ultrasonography and NIRS appeared to be a promising tool for evaluation of the muscle in patients with TMD.
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