Effect of experimental chewing on masticatory muscle pain onset
J. appl. oral sci
;
19(1): 34-40, Jan.-Feb. 2011. graf
Article
in English
| LILACS
| ID: lil-578745
ABSTRACT
OBJECTIVES: To evaluate the effect of a chewing exercise on pain intensity and pressure-pain threshold in patients with myofascial pain. METHODS: Twenty-nine consecutive women diagnosed with myofascial pain (MFP) according to the Research Diagnostic Criteria comprised the experimental group and 15 healthy age-matched female were used as controls. Subjects were asked to chew a gum stick for 9 min and to stay at rest for another 9 min afterwards. Pain intensity was rated on a visual analog scale (VAS) every 3 min. At 0, 9 and 18 min, the pressure-pain threshold (PPT) was measured bilaterally on the masseter and the anterior, medium, and posterior temporalis muscles. RESULTS: Patients with myofascial pain reported increase (76 percent) and no change (24 percent) on the pain intensity measured with the VAS. A reduction of the PPT at all muscular sites after the exercise and a non-significant recovery after rest were also observed. CONCLUSION: The following conclusions can be drawn: 1. there are at least two subtypes of patients with myofascial pain that respond differently to experimental chewing; 2. the chewing protocol had an adequate discriminative ability in distinguishing patients with myofascial pain from healthy controls.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Facial Pain
/
Mastication
/
Masticatory Muscles
Type of study:
Practice guideline
/
Observational study
Limits:
Adolescent
/
Adult
/
Female
/
Humans
Language:
English
Journal:
J. appl. oral sci
Journal subject:
Dentistry
Year:
2011
Type:
Article
/
Project document
Affiliation country:
Brazil
Institution/Affiliation country:
State University of Maringá/BR
/
University of São Paulo/BR
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