IRCT20180224038840N3 IRCT 2022-04-23 Oroumia University of Medical Sciences Effect of laser Therapy in Tempromandibular Joint Disorders Effect of 940 nm Low-level Laser Therapy on Treatment of Patients with Tempromandibular Joint Disorders 2022-03-21 anticipated 34 Complete https://irct.ir/trial/59829 interventional Randomization: Randomized, Blinding: Triple blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Patients will be randomly divided into two groups A and B, using Microsoft Excel software. In this way, for each new patient, an integer is randomly assigned from 1 to 34, and then in the software, each of these numbers will be randomly entered into one of the groups A or B, Blinding description: Patients، Researcher and Statist are blinded of sample assignment.Patients in both groups will not be aware of the effect of the laser. The Principal Investigator and statist do not know the nature of groups A and B. The examiner in charge of patient care is not aware of the type of patient grouping. N/A Tempromandibular Joint disorders. Intervention 1: Intervention group: In the intervention group, 940 nm laser by Epic X biolase laser device (Ezlase; Biolase Technology, Inc., Irvine, CA, USA) will be used after review and calibration by the manufacturer, in the light and laser clinic, with output power of 300 mW in continuous mode, under dedicated control, With an energy density of 2.5 J / cm2 at detected sensitive points for 20 seconds, 2 times per week, totalling 4 weeks, in direct contact technique to the painful points. Intervention 2: Control group: Control group, In the same way the laser group, will be irradiated with a placebo laser (device with laser off). Patients will not be aware of the type of radiation (device on or off). Yes - There is a plan to make this available What will be shared: 34 patients referred to the diagnostic department of Alborz Dental Clinic who have signs and symptoms related to Tempromandibular Joint Disorders will be used in the study. When: 4 month To whom: Researchesr Conditions: Confidential Where to obtain: Researchers How to obtain: Permission from the Ethics Committee Comments: