Comparison of Low-Level Laser Therapy and Transcutaneous Electrical Nerve Stimulation for Myofascial Pain in Temporomandibular Disorders

Participants in this arm will receive Low-Level Laser Therapy (LLLT) using a Gallium Aluminum Arsenide (GaAlAs) semiconductor diode laser. The treatment involves a wavelength range of 650-808 nm with a power output of 775 mW. The therapy is administered by exposing tender points around the temporomandibular joint (TMJ) to the laser for 2 minutes per session. Each participant will receive treatment on alternate days (three sessions per week) over the course of three weeks. The goal is to assess the effectiveness of LLLT in reducing pain and improving mouth opening in patients with myofascial pain associated with Temporomandibular Disorders (TMD).

Participants in this arm will undergo Transcutaneous Electrical Nerve Stimulation (TENS), utilizing a four-electrode unit. The device will be set to deliver electrical impulses at a frequency of 150 Hz with a pulse width of 200 µs. Electrodes will be placed over the cutaneous region between the TMJ and coronoid process to stimulate the trigeminal and facial nerves. Each treatment session will last 15 minutes and occur on alternate days, three times a week for three weeks. This therapy aims to provide pain relief and improve jaw function for patients suffering from myofascial pain associated with TMD.