Photobiomodulation with simultaneous use of red and infrared light emitting diodes in the treatment of temporomandibular disorder: study protocol for a randomized, controlled and double-blind clinical trial.

Study Overview

Description: This is a study protocol for a randomized, controlled, and double-blind clinical trial designed

to evaluate the effects of photobiomodulation using simultaneous red and infrared LEDs on pain,

mandibular range of motion, and the electrical activity of masticatory muscles in individuals with

Temporomandibular Disorder (TMD).

Source: PubMed

Summary

Participants: 33 individuals (n=11 per group) of both sexes, aged 18 to 45 years.

Intervention: Photobiomodulation with 660 nm red and 850 nm infrared LEDs simultaneously, continuous 

wave, 4.45mW/cm2 irradiance, 5.35J/cm2 radiant exposure, 20 minutes per session, 6 non-consecutive

sessions over 2 weeks. Control groups included placebo and a standard control.

Methods: Pain (Visual Analog Scale), mandibular range of motion (digital caliper), and masticatory muscle

electrical activity (electromyography) were measured at baseline, after the first intervention, and at the

end of treatment

Conclusion

Precise microsecond pulsing enhanced collagen synthesis more effectively than continuous or traditional

pulsed methods. The most effective parameters were 100 µs pulse duration, 1000 µs interval, and a

specific train structure.