Effect of High-intensity Laser Therapy on Patients With Myogenic Temporomandibular Joint Dysfunction

Inclusion Criteria: * Patients from both gender with unilateral myogenic temporomandibular dysfunction (TMD) with trismus diagnosed and referred from maxillofacial specialist. * Aged between 20 to 45 years old . * Visual analogue scale (VAS) score \>3 for unilateral myogenic pain of the temporomandibular joint (TMJ). * Pain lasting at least 3 months. * Patients were diagnosed as unilateral myogenic pain. Exclusion Criteria: * Previous TMJ surgery. * History of jaw dislocation. * History of jaw fracture. * Previous therapy with occlusal splint. * Concomitant therapy of bruxism. * Presence of removable oral prosthesis. * Metal implants in the skull. * Presence of hearing aids. * Malignancy. * Pregnancy. * Diabetic patients. * Hypertensive patients. * Systemic rheumatologic disease * Systemic infection. * Inserted cardiac pacemaker. * Presence of coagulation disorders. * Trigeminal neuritis. * Cognitive dysfunction. * Bilateral TMD.