Comparing low-level laser therapy and ultrasound therapy for pain reduction in temporomandibular disorders: A quasi-experimental study.
BACKGROUND Temporomandibular disorders (TMD) is the most common cause of pain in oro-facial region that is of non-dental origin. Signs and symptoms involve pain on masticatory muscles, temporomandibular joint or both. This study aimed to compare the effectiveness of Ultrasound therapy (UST) with Low-Level Laser Therapy (LLLT) in reducing pain related to TMD. MATERIALS AND METHODS Forty-six patients with TMD (Myalgia of masseter and temporalis, and arthralgia of TMJ) were included in this study. Patiens were assigned into Group A (LLLT) and Group B (UST). Numerical Rating Scale (NRS) and maximum mouth opening were measured over five sessions. RESULTS Both groups showed significant reductions in NRS scores and improvements in maximum mouth opening (p < 0.05), with no significant differences between groups. CONCLUSION Based on obtained data, both LLLT and UST were associated with reductions in pain in patients with TMJ arthralgia and myalgia of the masseter and temporalis muscles.