Effects of lidocaine patch on orofacial pain and sleep quality in patients with bruxism
DOI:
https://doi.org/10.23925/1984-4840.2025v27a21Keywords:
Bruxism, Temporomandibular Joint Dysfunction Syndrome, Facial Pain, Dental Occlusion, Lidocaine, Sleep QualityAbstract
Introduction: Sleep bruxism is a movement disorder characterized by teeth grinding or clenching, which results in rhythmic contractions of the masseter muscles. These contractions can increase tooth compression during sleep compared to wakefulness. This mechanical stress may contribute to chronic orofacial pain, tooth fractures, dental wear, and temporomandibular joint damage. Objective: To evaluate the effects of applying a 5% lidocaine patch on orofacial pain and sleep quality in patients with sleep bruxism. Methodology: This was a pilot outpatient treatment study, open-label, self-controlled, with both quantitative and qualitative assessments. It included 10 volunteers diagnosed with sleep bruxism for over five years. Participants self-applied a 5% lidocaine patch at a daily dose of 350 mg, worn nightly for 8 hours over a 30-day
period. Sleep quality and pain levels were assessed using a self-reported questionnaire. Results: Nine patients adhered satisfactorily to the treatment protocol. Significant improvements in orofacial pain associated with sleep bruxism were observed on days 10, 20, and 30 of treatment (p < 0.001). Improved sleep quality was also reported at the end of the
intervention (p < 0.005). As expected, teeth grinding behavior remained unchanged (p > 0.05). Conclusion: The use of a 5% lidocaine patch as an adjunct treatment for moderate to severe sleep bruxism promoted muscle relaxation, reduced orofacial pain, improved sleep quality, and was well tolerated, with no adverse reactions reported.
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