2005 Fiscal Year Final Research Report Summary
Linear polarized near-infrared light radiation activates the decreased diffuse noxious inhibitory control systems in TMD patients,
| Project/Area Number |
16592009
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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 |
Surgical dentistry
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| Research Institution | University of Miyazaki |
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Principal Investigator |
KASHIMA Koji University of Miyazaki, Department of Oral and Maxillofacial Surgery, Assistant Professor, 医学部, 講師 (30233703)
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| Project Period (FY) |
2004 – 2005
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| Keywords | temporomandibular joint disorders / masticatory muscle / diffuse noxious inhibitory controls / linear polarized near-infrared light / stellate ganglion block |
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| Research Abstract |
In this research projects, I realized the following items.
1)This study demonstrated a significant elevation of the heat-induced pain threshold and a tendency for the warm sensation threshold to elevate, and provides evidence that the warming sensation has a negative feedback influence on heat pain intensity in humans, and provides a theoretical basis for the application of linear polarized near-infrared light radiation to the trigeminal region.
2)I also demonstrated that short-term wearing of an oral splint may inhibit some noxious and sensory inputs from cervically innervated structures, which are primarily served by unmyelinated C fibers, and conclude that oral splints may be appropriate for the treatment of painful cervical disorders.
3)Using muscle hardness meter, I substantiated that patients with masticatory myofascial pain have different muscle properties in the recovering phase after contraction, probably due to a slower intramuscular reperfusion.
4)I also revealed that muscle hardness characteristics of the masseter muscle completely differed from t we hose of the biceps brachii muscle after repetitive muscle activation.
5)This research also indicated that mouth opening training produces non-segmental analgesic effects mediated by C fiber and A-delta fiber.
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