EC Dental Science

Research Article Volume 22 Issue 1 - 2023

Infrared Laser Therapy Effectiveness Evaluation in Temporomandibular Disorders Using Electromyography - A Preliminary Study

Fernando Antônio de A Arnaud1, Pedro Cardoso Soares2, Martha Marques Ferreira Vieira3 and Luciane Hiramatsu Azevedo4*

1Professional Master’s Degree Lasers in Dentistry, Energy and Nuclear Research Institute, IPEN, University of Sao Paulo, Brazil
2Masters Student, Special Laboratory of Lasers in Dentistry (LELO), University of Sao Paulo (USP), Brazil
3Lasers and Applications Center, Energy and Nuclear Research Institute, IPEN, University of Sao Paulo, Brazil
4Researcher and Clinician at the Special Laboratory of Lasers in Dentistry, School of Dentistry, University of São Paulo, Brazil

*Corresponding Author: Luciane Hiramatsu Azevedo, Researcher and Clinician at the Special Laboratory of Lasers in Dentistry, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil.
Received: November 29, 2022; Published: December 09, 2022



Introduction: Temporomandibular disorders (TMD) are a collective term embracing a number of clinical problems involving masticatory musculature, temporomandibular joint (TMJ) and associated structures, or both. These disorders can be serious illnesses that can reduce the individual's quality of life.

Aim of the Study: The aim of this study was to evaluate the effectiveness of photobiomodulation in temporomandibular disorders (TMD) treatment.

Materials and Methods: Twelve patients selected for the experiments were randomly distributed in two groups. The Craniomandibular Index, proposed by Friction, was used in order to provide standardization in patient’s selection. Patients in the first group were submitted to laser irradiation procedure using an AlGaAs laser - emission at 808 nm, 100 mW of output power, in punctual and contact mode, spot of 0.0028 cm2 and energy of 2.8 J/point. Patients in the second group, control group, were submitted to an interocclusal device (orthotic plate) and photobiomodulation was performed only for simulation with the equipment turned off. The evaluation of laser radiation effectiveness on the muscular tissue was made through electromyography surface and electrodes. The electromyography was obtained before and after laser irradiation (15 and 30 minutes after irradiation).

Results: The statistical analysis showed laser therapy effectiveness. The procedure reduced the muscular electric activity, providing muscular relaxation; as also was responsible for a reduction of pain and of the inflammatory condition.

Conclusion: It was verified the effectiveness of the laser as an auxiliary treatment for TMD.

Keywords: Laser Therapy; Temporomandibular Joint; Temporomandibular Disorder; Electromyograph (EMG)

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Luciane Hiramatsu Azevedo., et al. “Infrared Laser Therapy Effectiveness Evaluation in Temporomandibular Disorders Using Electromyography - A Preliminary Study”.”. EC Dental Science 22.1 (2023): 36-45.

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