Evaluation of low-level laser therapy effectiveness on the pain and masticatory performance of patients with myofascial pain

18 de junho de 2018
Curso Gratuito de Invisalign

This study investigated the effect of low-level
laser therapy (LLLT) on the masticatory performance

(MP), pressure pain threshold (PPT), and pain intensity in
patients with myofascial pain. Twenty-one subjects, with
myofascial pain according to Research Diagnostic Criteria/
temporomandibular dysfunction, were divided into laser
group (n012) and placebo group (n09) to receive laser
therapy (active or placebo) two times per week for 4 weeks.
The measured variables were: (1) MP by analysis of the
geometric mean diameter (GMD) of the chewed particles
using Optocal test material, (2) PPT by a pressure algometer,
and (3) pain intensity by the visual analog scale (VAS).
Measurements of MP and PPT were obtained at three time
points: baseline, at the end of treatment with low-level laser
and 30 days after (follow-up). VAS was measured at the
same times as above and weekly throughout the laser therapy.
The Friedman test was used at a significance level of
5 % for data analysis. The study was approved by the Ethics
Committee of the Federal University of Sergipe (CAAE:
0025.0.107.000-10). A reduction in the GMD of crushed
particles (p<0.01) and an increase in PPT (p<0.05) were seen only in the laser group when comparing the baseline and end-of-treatment values. Both groups showed a decrease in pain intensity at the end of treatment. LLLT promoted an improvement in MP and PPT of the masticatory muscles.

Curso Gratuito de Invisalign


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