| Project/Area Number |
13671988
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 School of Dentistry |
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Principal Investigator |
ARIJI Yoshiko Aichi-Gakuin University School of Dentistry, Department of Oral and Maxillofacial Radiology, Assistant Professor, 歯学部, 講師 (60232063)
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| Co-Investigator(Kenkyū-buntansha) |
IZUMI Masahiro Aichi-Gakuin University School of Dentistry, Department of Oral and Maxillofacial Radiology, Associate Professor, 歯学部, 助教授 (40212956)
GOTOH Masakazu Aichi-Gakuin University School of Dentistry, Department of Oral and Maxillofacial Radiology, Instructor, 歯学部, 助手 (30319206)
SAKUMA Shigemitsu Aichi-Gakuin University School of Dentistry, Department of Fixed Prosthodontics, Assistant Professor, 歯学部, 講師 (80271386)
ARIJI Eiichiro Aichi-Gakuin University School of Dentistry, Department of Oral and Maxillofacial Radiology, Assistant Professor, 歯学部, 教授 (00150459)
KAWAMATA Akitoshi Asahi University School of Dentistry, Department of Oral Radiology, Associate Professor, 歯学部, 助教授 (30195143)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | color Doppler sonography / temporomandibular disorder / splint / masticatory muscle |
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| Research Abstract |
Myofascial pain may be provoked in relation to muscle edema, which depends on the balance of in- and out-flows of blood. In order to clarify characteristics of the masticatory muscle in patients with myofascial pain dysfunction (MPD) syndrome, the muscle thickness, internal echogenecity of the masticatory muscle, and diameter and blood flow velocity of the facial artery were evaluated using color Doppler ultrasonography, in comparison with those of the healthy volunteers. Consequently, there were significant differences in the muscle thickness, distribution of echogenic band patterns and diameter and maximum velocity between the two groups. These findings of muscle edema may be of some help to explicate cause of pain in MPD patients.
Although therapeutic methods of myofascial pain have not been established yet, some have reported effectiveness of splint therapy. We performed splint therapy for MPD patients, and analyzed changes of the ultrasonographic characteristics of the masticatory muscle in relation with the symptom. Most of patients were relieved from pain with change of echogenic band patterns and/or with decrease in the muscle thickness. Relief of the muscle edema may be related with improvement of symptom, and further study would be demanded. There were no differences in the influence on blood flow velocities between the different types of splints. In conclusion, color Doppler ultrasonography may be partially useful for assessment of therapeutic effect.
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