Effect Effectiveness of Photobiomodulation Therapy in the Management of Myofascial Pain Dysfunction Syndrome: A Randomized Triple-Blind Clinical Trial.

IF 2.6
Behzad Salari, Amin Khalghy, Sahar Mafi, Reza Fekrazad
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Abstract

Objective: This study aimed to assess the effectiveness of photobiomodulation therapy (PBMT) by two wavelengths in reducing pain and enhancing jaw function in patients with myofascial pain dysfunction syndrome (MPDS).

Methods: A triple-blind, randomized controlled trial was conducted in 22 patients with MPDS, who were randomly assigned to two groups (n=11). One group received photobiomodulation therapy using wavelengths of 630 and 810 nm (energy densities: 4-6 J/cm², power: 200 mW, irradiation time: 60 seconds per point), while the control group underwent sham laser treatment (device turned off), in addition to standard conservative care. The laser was administered daily for the first three days, followed by alternate-day sessions for one week, totaling 12 sessions. Pain intensity was measured using a visual analog scale (VAS), and maximum mouth opening (MMO) was recorded before treatment and at 1-, 2-, 3-, and 4-weeks post-treatment. Data were analyzed using independent and paired t-tests, and repeated measures ANOVA.

Results: Both PBMT and control groups experienced significant pain reduction over time (P=0.0001). The rate of pain reduction was similar in both groups (P=0.89). Both groups showed significant MMO improvement (P=0.015), but the trend in improvement was not significantly different between them (P=0.86).

Conclusion: Photobiomodulation therapy, under the tested parameters, effectively reduced pain and improved jaw function in patients with MPDS, comparable to conventional conservative care.

光生物调节治疗肌筋膜疼痛功能障碍综合征的疗效:一项随机三盲临床试验。
目的:探讨双波长光生物调节疗法(PBMT)对肌筋膜疼痛功能障碍综合征(MPDS)患者减轻疼痛和增强颌功能的效果。方法:采用三盲、随机对照试验,将22例MPDS患者随机分为两组(n=11)。一组接受630和810 nm波长的光生物调节治疗(能量密度:4-6 J/cm²,功率:200 mW,照射时间:每点60秒),而对照组在标准保守治疗的基础上接受假激光治疗(关闭设备)。前三天每天进行激光治疗,随后一周隔天进行治疗,总共12次。采用视觉模拟量表(VAS)测量疼痛强度,并记录治疗前和治疗后1、2、3、4周的最大张嘴量(MMO)。数据分析采用独立t检验、配对t检验和重复测量方差分析。结果:随着时间的推移,PBMT组和对照组的疼痛均显著减轻(P=0.0001)。两组疼痛减轻率相似(P=0.89)。两组均有明显改善(P=0.015),但两组间改善趋势无显著差异(P=0.86)。结论:在试验参数下,光生物调节治疗可有效减轻MPDS患者的疼痛,改善颌骨功能,与常规保守治疗相当。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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