Effect of Photobiomodulation With LED Cluster on Pain and Mandibular and Cervical Mobility in Patients With Temporomandibular Dysfunction: Clinical, Randomized, Controlled and Blind Study

The term temporomandibular disorders (TMD), according to the American American Dental Association (ADA), refers to a group of disorders characterized by pain in the temporomandibular joint (TMD) in the periauricular area or in the masticatory muscles, in addition to TMD sounds during jaw function and deviation or restriction of jaw movements. Its multifactorial etiology is related to a heterogeneous group of functional, structural, and psychological factors, making it difficult to identify the association between a single etiological factor and the signs and symptoms of TMD. As a treatment option, it hasphotobiomodulation, using different light sources, alone or in combination. These studies aim to validate the effects of photobiomodulation using clusters of 850nm LEDs (infrared) and 630nm LEDs (red); in pain and cervical and mandibular mobility in patients with TMD. It is a randomized, controlled, and blind clinical trial, which will consist of n= 36, of both genders, with ages ranging from 18 to 45 years, divided into 2 groups: Group 1 Red and infrared LED cluster, Group 2 placebo. The areas where they will receive photobiomodulation will be the TMJ area, masseter muscles, temporal muscles, scalenes, and trapezius. 6 non-consecutive sessions will be performed over 2 weeks. Diagnostic Criteria for Temporomandibular Disorders - DC/TMD will be used to determine TMD and validate participants. To validate the mandibular range of motion (ADM) a pachymeter will be used and for the cervical ADM a goniometer (fleximeter). The pain will be validated using the visual analog scale-VAS. All participants will be evaluated after the first therapeutic intervention, and again at the end, following the same validation procedures used initially.