Local vibratory stimulation for temporomandibular disorder myofascial pain treatment: a randomised, double-blind, placebo-controlled preliminary study

Several methods are currently used to manage pain related to temporomandibular disorder (TMD).Vibratory stimulation is applied as a pain treatment for several musculoskeletal disorders, but it has not yet been studied in-depth for TMD symptoms. The aim of this study is to analyse the effectiveness of at-home local vibration therapy (LVT) for the management of TMDs-related myofascial pain.Methods. Fifty-four TMD patients (43 F, 11 M) with an average age of 40.7 (age range: 29-54 yr.) were randomly subdivided into two groups. The study group (AG) received 1 week of at-home LVT treatment with the NOVAFON Pro Sk2/2: 50/100 Hz, bilaterally applied to the pain area for 16 minutes daily. The placebo group (IG) followed the same protocol using inactive devices. Temporomandibular jointpain (TMJ), muscular pain (MM), and headache (HA) were assessed. Pain was evaluated using the visual analogue scale (VAS) before (T0) and after therapy (T1). Statistical analysis and Student's t-tests were applied (statistical significance for P<0.05). Results. AG patients reported decreased average values for all types of pain considered between T0 and T1, with a statistically significant difference for TMJ pain (P<0.05), MM pain, and HA (P<0.001). IG patients reported a no statistically significant decrease in the average values of MM pain and an increase in the average valuesof TMJ pain and HA. Conclusion. The study supports the use of local vibration therapy in the control of TMD-related TMJ pain, local muscular pain, and headache.