This study examines the effect of electromyography biofeedback on masticatory muscles hyperactivity on patients with bruxism.
Twenty adult subjects with definite mild to moderate bruxism examined by a dentist prior to the study.
Tenderness of masticatory muscles on palpation grade one and two according to the digital palpating scale
Mild to moderate myofascial pain around the temporomandibular joint causing discomfort in the morning.
Took any Botox or PRP injection treatment for this condition for the last six months
Had any advanced periodontal disease.
Any intraoral fixed splints.
Pregnancy.
Parallel
Electromyography biofeedback
Other interventionParticipants in the experimental group will receive surface electromyography (SEMG) feedback training, targeting the Masseter muscle, for 40 minutes per session according to the Evidence-Based practice since longer practice may become counterproductive due to fatigue and loss of focus. The frequency of the sessions will be 3 sessions/week for 4 weeks.
Pharmacotherapy
DrugPharmacotherapy will be received by all participants in the two groups in the form of multi relaxant (cyclobenzaprine) 10 MG twice daily for 4 weeks \& anti inflammatory (non steroidal anti-inflammatory drugs).
Assessment of Masseter Hyperactivity
The assessment of Masseter muscle hyperactivity will be carried out by the digital palpating scale according to the following criteria: Grade Zero (0): when the muscle palpated and there is no pain or tenderness reported by the patient. Grade (1): Recorded if the patient response the palpation is uncomfortable (tenderness or soreness). Grade (2): is recorded if the patient experiences definite discomfort or pain. Grade (3): is recorded if the patient shows evasive action or eye tearing or verbalizes a desire not to have the area palpated again.
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