Effect of laser auriculotherapy on signs and symptoms of patients with problems in the chin joint.

INTERVENTION: 1. Control Group (CONT): the participants will be submitted to treatment using a myorrelaxing occlusal plate. Patients will be instructed to use the plate for 8 hours daily, at night. 2. Laser Auriculotherapy Group (ALA): Patients who will receive the application of auriculotherapy with low power laser and method of application by contact. The application will be carried out at the following points: Shenmen, TMJ, heart, in the ear on the dominance side of the body. There will be 8 sessions of laser auriculotherapy, which will be held once a week. 3. Associated Therapies Group (ASS): patients will receive treatment with myorelaxing plaque (CONT) and laser auriculotherapy (ALA) as described for groups 1 and 2. The applications will be performed once a week, covering a total period of treatment 8 weeks. All experimental groups will have 20 volunteers each. 4. Associated Therapies Group (ASS0): patients will receive treatment with myorelaxing plaque (CONT) and laser auriculotherapy (ALA) with zero dose, as described in groups 1 and 2, however, the laser device will be adjusted so as not to emit light, that is, zero dose. Applications will be made once a week, for a total treatment period of 8 weeks. All experimental groups will have 20 volunteers each. Acupuncture, Ear Procedure/surgery CONDITION: Disorders of the temporomandibular articulation; Dysfunction Syndrome Temporomandibular Joint ; Temporomandibular Joint Dysfunction Syndrome ; Temporomandibular Joint Disorders Temporomandibular Joint Disorders Temporomandibular Joint Dysfunction Syndrome PRIMARY OUTCOME: Decreased pain scores verified by means of; the visual analogue scale method, in the; assessment of painful sites to muscle and; joint palpation submitted to non‐parametric; statistical analysis, p‐value less than 0.05, when comparing the groups,; Decreased somatization scores verified by; non‐specific physical symptoms, including; and excluding pain, based on the; somaticisation domain of Symptoms‐; Checklist‐90 (SCL‐90) submitted to nonparametric; statistical analysis, p‐value less than 0.05, when comparing the groups. Improvement of the psycho‐emotional; aspects, reduction of depression based on; the Depression Scale (DEP) of the; Symptoms‐Checklist‐90 (SCL‐90); submitted to non‐parametric statistical; analysis, p‐value less than 0.05, when comparing the groups,; Reduction of disability related to chronic; pain verified by the Graded Chronic Pain; Scale (GCPS) scores submitted to nonparametric; statistical analysis, p <0.05, in; the comparison between groups,; ; SECONDARY OUTCOME: Improvement of the non‐specific physical ; symptoms scores evaluated for the ; treatment groups compared to the control ; group verified by visual analog scale scores ; submitted to non‐parametric statistical ; analysis, p‐value less than 0.05, when comparing the groups, INCLUSION CRITERIA: Adult volunteers aged 18 years or over; score equal to or greater than 3 in the Triage Questionnaire of the American Academy of Orofacial Pain; with the presence of myofascial pain according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC / TMD).