The Efficacy of 940 nm Low-level Laser Therapy on Treatment of Patients with Myogenic Tempromandibular Joint Disorders

Effect of 940 nm LLLT on Myogenic TMD treatment

Clinical trial with control group, parallel groups, triple blinded, randomized, phase 2 on 20 patients. The Rand function of Excel 2010 software was used for randomization.

20 patients with Inclusion criteria Who Refer to Urmia University Dental Public Health Ward,Enter to Study After Giving Informed Consent.For the intervention group in the light and laser clinic, 940 nm laser by Epic X biolase laser device will be used after calibration by the manufacturer,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. Control group, In the same way the laser group, will be irradiated with a placebo laser (device with laser off). Patients، Researcher and Statist are blinded of sample assignment.

Entrance criterias: limited mouth opening or function presence of pain in masticatory muscles and/or TMJs, either in clenching or in jaw movements (TMD muscular disturbance (class Ia, Ib) or arthralgia (class IIIa). Exclusion criterias: patients who had major systemic disorders Patients with arthralgic temporomandibular joint disorders patients who received any form of treatment for TMD within the last month

1.Intervention group: This group will be exposed to 940 nm laser with a power of 300 mW and to the temporomandibular joint area for 20 seconds two sessions per week for four weeks. 2.placebo group: In the same way, the placebo group will be exposed to Palsbo laser (device with laser off).

Patient satisfaction, Intensity of pain,The amount of mouth opening, Clicking sound, Deviation when opening the mouth.

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 20, and then in the software, each of these numbers will be randomly entered into one of the groups A or B.

Patients، Researcher and Statistician are blinded of sample assignment. Control group, In the same way the laser group, will be irradiated with a placebo laser (device with laser off) and Patients will not be aware of the type of radiation (device on or off). 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.

Data on the main consequences can be shared

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The data can be accessed only from the oral health department of Urmia Dental School.