Effectiveness of low-level laser therapy in the management of the temporomandibular joint disorders: A placebo-controlled trial

Abstract

Objective: The purpose of this clinical study is to assess the capability of low-level laser therapy (LLLT) in the treatment of temporomandibular joint disorders (TMJDs). Materials and methods: Twenty-four temporomandibular disorder (TMD) patients were selected based on TMD pain screening, Wong and Baker pain scale, and clinical evaluation for signs of TMJDs. Sixteen patients were randomly selected and placed in an experimental group, and a placebo group com-prised of eight patients. Painful muscular areas were identified by digital pressure, and laser was applied to these areas for an average of 300 seconds for each patient. The laser device was directed to painful areas without emission in the placebo group. Patients were evaluated before and immediately after each session and after 1 month. Results: Before and after treatment, the changes in pain levels in group I were statistically significant (p < 0.0001). The changes in pain levels before and after treatment in group II did not show any statistical significance (p = 1.000). The results were statistically significant (p = 0.000), on comparing the pain levels after 1 month in groups I and II. Conclusion: The results revealed a significant amount of pain reduction after LLLT on a short-term basis, the majority of patients reported a decrease in clicking frequency, and a softer mandibular movement compared with the placebo group. Clinical significance: The LLLT can be advocated as an adjunct in reducing pain levels in most TMJDs on a short-term basis. Observations from this study second this view.