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Clinical Trial Summary

This study evaluates beneficial effects of biofeedback therapy in reducing pain and increased tension of muscles occurring in patients with temporomandibular disorders (TMD). During the study Electromyography Biofeedback (EMG-Biofeedback)- assisted training lowering muscle tension will be used. The patients will undergo 4 or 8 meetings of EMG-Biofeedback - assisted training Than the patients will be reevaluated after 6 and 12 weeks.


Clinical Trial Description

1. The Aim: The aim of the study is to evaluate beneficial effects of biofeedback therapy in reducing pain, increased tension of masticatory muscles occurring in patients with myogenous TMD and if the therapy influences psychological and sleep parameters. Also to verify if the effect of the therapy persists in time. 2. Patients: 1. Experimental group 1 - patients diagnosed with myalgia subjected to 4 EMG-Biofeedback trainings. The group will include approximately 20 adults. 2. Experimental group 2 - patients diagnosed with myalgia subjected to 8 EMG-Biofeedback trainings. The group will include approximately 20 adults. 3. Control group - patients diagnosed with myalgia subjected to physiotherapy (manual therapy), stabilization splint usage and counseling (20 adults). 3. Methods: Adult patients diagnosed with masticatory muscles myalgia will be included in this study. All participants will be evaluated in accordance to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Intensity of pain in the masticatory muscles will be defined using the Numerical Rating Scale (NRS). The pressure pain threshold (PPT) will be assessed with an dolorimeter and noticed on DC/TMD pain drawing diagram. Each of the qualified patients will also undergo the electromyography of temporal and masseter muscles. All participants will fill in questionnaires (Graded Chronic Pain Scale (GCPS), Pittsburgh Sleep Quality Index (PSQI), Patient Health Questionnaire-9 (PHQ-9), Beck Anxiety Inventory (BAI) and Perceived Stress Scale-10 (PSS-10) and Somatic Symptom Scale-8 (SSS-8). Patients qualified to the experimental groups will be divided in to 2 subgroups composed of 20 participants each. Experimental group 1 will undergo a cycle of 4 meetings (1 per week) of 20 minute EMG-Biofeedback- assisted training decreasing the masseter and temporalis muscle tension. 10 minutes of training for each group of muscle. Experimental group 2 will undergo a cycle of 8 meetings (1 per week) of 20 minute EMG-Biofeedback- assisted training decreasing the masseter and temporalis muscle tension. 10 minutes of training for each group of muscle. Postcycle examination: After completing the cycle, patients from the study group and control group will be reevaluated. All participants will be evaluated in accordance to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Intensity of pain in the masticatory muscles will be defined using the Numerical Rating Scale (NRS). The pressure pain threshold (PPT) will be assessed with an dolorimeter and noticed on DC/TMD pain drawing diagram. Each of the qualified patients will also undergo the electromyography of temporal and masseter muscles. All participants will fill in questionnaires (Graded Chronic Pain Scale (GCPS), Pittsburgh Sleep Quality Index (PSQI), Patient Health Questionnaire-9 (PHQ-9), Beck Anxiety Inventory (BAI) and Perceived Stress Scale-10 (PSS-10) and Somatic Symptom Scale-8 (SSS-8). The postcycle examination will take place after last planned training and during follow-ups - 6 and 12 weeks after completion of EMG-Biofeedback therapy. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03421028
Study type Interventional
Source Wroclaw Medical University
Contact Wojciech Florjanski, D.M.D.P.H.D.
Phone +48783602042
Email wojciech.florjanski@umed.wroc.pl
Status Not yet recruiting
Phase N/A
Start date January 1, 2022
Completion date December 31, 2024

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