Effect of photobiomodulation therapy on painful temporomandibular disorders

Abstract To evaluate the effect of photobiomodulation therapy (PBMT) on painful temporomandibular disorders (TMD) patients in a randomized, double-blinded, placebo-controlled manner. Participants were divided into a masseter myalgia group (n = 88) and a temporomandibular joint (TMJ) arthralgia group...

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Autores principales:	Adila Aisaiti, Yanli Zhou, Yue Wen, Weina Zhou, Chen Wang, Jing Zhao, Linfeng Yu, Jinglu Zhang, Kelun Wang, Peter Svensson
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b1b3a396cdfc43d3a7cdd710fd1711fb
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spelling	oai:doaj.org-article:b1b3a396cdfc43d3a7cdd710fd1711fb2021-12-02T13:40:51ZEffect of photobiomodulation therapy on painful temporomandibular disorders10.1038/s41598-021-87265-02045-2322https://doaj.org/article/b1b3a396cdfc43d3a7cdd710fd1711fb2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87265-0https://doaj.org/toc/2045-2322Abstract To evaluate the effect of photobiomodulation therapy (PBMT) on painful temporomandibular disorders (TMD) patients in a randomized, double-blinded, placebo-controlled manner. Participants were divided into a masseter myalgia group (n = 88) and a temporomandibular joint (TMJ) arthralgia group (n = 87) according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Both groups randomly received PBMT or placebo treatment once a day for 7 consecutive days, one session. The PBMT was applied with a gallium-aluminum-arsenide (GaAlAs) laser (wavelength = 810 nm) at pre-determined points in the masseter muscle (6 J/cm2, 3 regions, 60 s) or TMJ region (6 J/cm2, 5 points, 30 s) according to their most painful site. Pain intensity was rated on a 0–10 numerical rating scale (NRS) and pressure pain thresholds (PPT) and mechanical sensitivity mapping were recorded before and after the treatment on day 1 and day 7. Jaw function was assessed by pain free jaw opening, maximum unassisted jaw opening, maximum assisted jaw opening, maximum protrusion and right and left excursion. Data were analyzed with a mixed model analysis of variance (ANOVA). Pain intensity in arthralgia patients decreased over time (P < 0.001) for both types of interventions, however, PBMT caused greater reduction in pain scores than placebo (P = 0.014). For myalgia patients, pain intensity decreased over time (P < 0.001) but without difference between interventions (P = 0.074). PPTs increased in both myalgia (P < 0.001) and TMJ arthralgia patients over time (P < 0.001) but without difference between interventions (P ≥ 0.614). Overall, PBMT was associated with marginally better improvements in range of motion compared to placebo in both myalgia and arthralgia patients. Pain intensity, sensory function and jaw movements improve after both PBMT and placebo treatments in myalgia and arthralgia patients indicating a substantial non-specific effect of PBMT.Adila AisaitiYanli ZhouYue WenWeina ZhouChen WangJing ZhaoLinfeng YuJinglu ZhangKelun WangPeter SvenssonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Adila Aisaiti Yanli Zhou Yue Wen Weina Zhou Chen Wang Jing Zhao Linfeng Yu Jinglu Zhang Kelun Wang Peter Svensson Effect of photobiomodulation therapy on painful temporomandibular disorders
description	Abstract To evaluate the effect of photobiomodulation therapy (PBMT) on painful temporomandibular disorders (TMD) patients in a randomized, double-blinded, placebo-controlled manner. Participants were divided into a masseter myalgia group (n = 88) and a temporomandibular joint (TMJ) arthralgia group (n = 87) according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Both groups randomly received PBMT or placebo treatment once a day for 7 consecutive days, one session. The PBMT was applied with a gallium-aluminum-arsenide (GaAlAs) laser (wavelength = 810 nm) at pre-determined points in the masseter muscle (6 J/cm2, 3 regions, 60 s) or TMJ region (6 J/cm2, 5 points, 30 s) according to their most painful site. Pain intensity was rated on a 0–10 numerical rating scale (NRS) and pressure pain thresholds (PPT) and mechanical sensitivity mapping were recorded before and after the treatment on day 1 and day 7. Jaw function was assessed by pain free jaw opening, maximum unassisted jaw opening, maximum assisted jaw opening, maximum protrusion and right and left excursion. Data were analyzed with a mixed model analysis of variance (ANOVA). Pain intensity in arthralgia patients decreased over time (P < 0.001) for both types of interventions, however, PBMT caused greater reduction in pain scores than placebo (P = 0.014). For myalgia patients, pain intensity decreased over time (P < 0.001) but without difference between interventions (P = 0.074). PPTs increased in both myalgia (P < 0.001) and TMJ arthralgia patients over time (P < 0.001) but without difference between interventions (P ≥ 0.614). Overall, PBMT was associated with marginally better improvements in range of motion compared to placebo in both myalgia and arthralgia patients. Pain intensity, sensory function and jaw movements improve after both PBMT and placebo treatments in myalgia and arthralgia patients indicating a substantial non-specific effect of PBMT.
format	article
author	Adila Aisaiti Yanli Zhou Yue Wen Weina Zhou Chen Wang Jing Zhao Linfeng Yu Jinglu Zhang Kelun Wang Peter Svensson
author_facet	Adila Aisaiti Yanli Zhou Yue Wen Weina Zhou Chen Wang Jing Zhao Linfeng Yu Jinglu Zhang Kelun Wang Peter Svensson
author_sort	Adila Aisaiti
title	Effect of photobiomodulation therapy on painful temporomandibular disorders
title_short	Effect of photobiomodulation therapy on painful temporomandibular disorders
title_full	Effect of photobiomodulation therapy on painful temporomandibular disorders
title_fullStr	Effect of photobiomodulation therapy on painful temporomandibular disorders
title_full_unstemmed	Effect of photobiomodulation therapy on painful temporomandibular disorders
title_sort	effect of photobiomodulation therapy on painful temporomandibular disorders
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b1b3a396cdfc43d3a7cdd710fd1711fb
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Effect of photobiomodulation therapy on painful temporomandibular disorders

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