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Clinical and electromyographic effects of biofeedback training in mandibular dysfunction
Biofeedback and Self-Regulation
|March 1, 1984
Summary
Electromyographic biofeedback training significantly improved symptoms of mandibular dysfunction in patients. However, the study found no correlation between reduced muscle activity and symptom improvement, questioning simple neuromuscular learning models.
Area of Science:
- Neurology
- Biomedical Engineering
- Physical Therapy
Background:
- Mandibular dysfunction presents with diverse symptoms.
- Electromyographic (EMG) biofeedback is a potential therapeutic modality.
- Understanding the neuromuscular mechanisms of biofeedback is crucial.
Purpose of the Study:
- To evaluate the efficacy of EMG biofeedback in patients with mandibular dysfunction.
- To investigate changes in muscle activity (m. masseter and m. frontalis) during biofeedback training.
- To explore the relationship between EMG activity changes and clinical symptom improvement.
Main Methods:
- Twenty patients with mandibular dysfunction (10 acute, 10 chronic) participated.
- EMG activity was recorded from the m. masseter and m. frontalis areas.
- Six training sessions were conducted, with EMG activity measured within and between sessions.
Main Results:
- Mean EMG activity significantly decreased within training sessions for both muscle areas.
- EMG activity did not significantly decrease between sessions.
- Clinical and subjective symptoms of mandibular dysfunction showed significant improvement post-training.
Conclusions:
- EMG biofeedback training effectively improved mandibular dysfunction symptoms.
- No significant correlation was found between reduced EMG activity and symptom improvement.
- Results challenge simplistic neuromuscular learning models for biofeedback efficacy.