Use of sonographic elastography of the masseter muscles for optimizing massage pressure: a preliminary study

Summary  To examine the stiffness of the masseter muscle using sonographic elastography and to investigate its relationship with the most comfortable massage pressure in the healthy volunteers. In 16 healthy volunteers (10 men and 6 women), the Masseter Stiffness Index (MSI) was measured using EUB‐7...

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Bibliographic Details
Published in:Journal of oral rehabilitation 2009-09, Vol.36 (9), p.627-635
Main Authors: ARIJI, Y., KATSUMATA, A., HIRAIWA, Y., IZUMI, M., IIDA, Y., GOTO, M., SAKUMA, S., OGI, N., KURITA, K., ARIJI, E.
Format: Article
Language:English
Subjects:
Adult
Dentistry
Elasticity Imaging Techniques - instrumentation
Elasticity Imaging Techniques - methods
Female
Humans
Male
massage
Massage - instrumentation
Massage - methods
masseter muscle
Masseter Muscle - diagnostic imaging
Masseter Muscle - physiology
Middle Aged
myofascial pain
Pain Measurement
Pressure
Sensory Thresholds
sonographic elastography
Temporomandibular Joint Dysfunction Syndrome - diagnostic imaging
Temporomandibular Joint Dysfunction Syndrome - rehabilitation
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Summary:Summary  To examine the stiffness of the masseter muscle using sonographic elastography and to investigate its relationship with the most comfortable massage pressure in the healthy volunteers. In 16 healthy volunteers (10 men and 6 women), the Masseter Stiffness Index (MSI) was measured using EUB‐7000 real‐time tissue elastography. They underwent massages at three kinds of pressures using the Oral Rehabilitation Robot (WAO‐1). A subjective evaluation regarding the comfort of each massage was recorded on the visual analogue scale. Elastography was also performed in two patients with temporomandibular joint dysfunction with the myofascial pain. The mean MSI of the right and left muscles in the healthy volunteers were 0·85 ± 0·44 and 0·74 ± 0·35 respectively. There was no significant difference between the right and left MSI in the healthy volunteers. The MSI was related to massage pressure at which the healthy men felt most comfortable. The two temporomandibular disorder patients had a large laterality in the MSI. The MSI was related to the most comfortable massage pressure in the healthy men. The MSI can be one index for determining the massage pressure.
ISSN:0305-182X
1365-2842
DOI:10.1111/j.1365-2842.2009.01977.x