Effects of Photobiomodulation With Superpulsed Laser and Dual Wavelengths in Children and Adolescents

Local photobiomodulation using a high-power superpulsed diode laser (GeminiEvo, Ultradent, USA) with dual infrared wavelengths (810 nm and 980 nm). Eight sessions will be conducted (twice a week for 4 weeks). Application will be at one point each on the masseter, temporal, trapezius, and temporomandibular joint regions. Each point will be irradiated for 13 seconds with 4 J of energy (10.52 J/cm²), in contact mode. The procedure includes safety measures such as protective eyewear and disinfection of the laser tip.

The same application protocol as the experimental group will be followed, using the same laser device (GeminiEvo, Ultradent, USA), but with the laser emission deactivated. The guide light and sound will remain active to preserve participant blinding. Application points, duration, frequency, and session environment will be identical to the active group.