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Three Photobiomodulation Wavelengths (635, 940, and 1064 nm) on Chronic Myogenic Temporomandibular Disorder

NCT07626164 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 45

Last updated 2026-06-04

No results posted yet for this study

Summary

Temporomandibular disorders (TMDs) are among the most common musculoskeletal conditions associated with chronic orofacial pain and functional disability. Chronic Myogenic TMD (MTMD) is the most prevalent subtype and is characterized by persistent masticatory muscle pain driven by peripheral and central sensitization mechanisms. Photobiomodulation (PBM) represents a conservative, non-invasive therapeutic modality within the medical management of TMD; however, the wavelength-dependent clinical and muscular effects remain inadequately defined. Aim: To compare the efficacy of three PBM wavelengths (635, 940, 1,064 nm) on pain intensity, mandibular function, surface electromyographic activity (sEMG), and pressure pain threshold (PPT) in patients with chronic myogenic TMD.

Conditions

  • Temporomandibular Disorders

Interventions

OTHER

635 nm red diode laser

Participants will receive PBM therapy using a 635 nm red diode laser (Lasotronix), standardized at a fluence of 8 J/cm² for energy density and Irradiance of 0.50 W/cm² power density in continuous wave using PBM applicator (8mm tip) for 16 seconds, near-contact working distance.

OTHER

940 nm NIR diode laser (Biolase)

Participants will receive PBM therapy using a 940 nm NIR diode laser (Biolase), standardized at a fluence of 8 J/cm² and Irradiance of 0.63 W/cm² power density in continuous wave using deep tissue handpiece (10mm tip) for 12.8 seconds.

OTHER

1064 nm Nd:YAG laser (Fotona)

Participants will receive PBM therapy using a 1064 nm Nd:YAG laser (Fotona), standardized at a fluence of 8 J/cm² energy density and Irradiance 0.53 W/cm² power density, using a genova handpiece (11mm tip) stamping technique for 15.2 sec.

Sponsors & Collaborators

  • Alexandria University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-06-01
Primary Completion
2026-12-30
Completion
2026-12-30

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07626164 on ClinicalTrials.gov