Abstract
Objective
To compare the effect of photobiomodulation (PBM) and transcutaneous electrical nerve stimulation (TENS) in the treatment of burning mouth.
Materials and methods
Randomized clinical trial of 25 patients with burning mouth treated by TENS (n=12) and PBM (n=13). The patients were treated weekly for 8 weeks. Two-factor ANOVA was used to determine whether the two interventions promoted significant differences in symptoms (measured with a visual analogue scale), unstimulated salivary flow, xerostomia, and dysgeusia between T0 (baseline), T1 (after the 4th treatment session), T2 (after the 8th treatment session), and T3 (30 days after the end of treatment).
Results
Intragroup comparison of VAS scores for pain showed a significant difference between T0xT1, T0xT2, and T0xT3 in the TENS group and between T0xT2 and T0xT3 in the PBM group (p˂0.001). Intergroup comparison of VAS scores for pain between T2xT3 showed a better response to PBM than to TENS (p=0.003). Patients of the TENS group showed an increase in salivary flow between T1 and T2 (p=0.052). There were no expressive variations in xerostomia or dysgeusia in the two groups analyzed.
Conclusion
TENS and PBM were effective in reducing the symptoms of burning mouth during and after treatment. The PBM group showed a better response during follow-up.
Trial registration
This clinical trial was registered at http://clinicaltrials.gov (Number: NCT05816200).
Clinical relevance
TENS was found to be a safe and effective therapy for burning mouth. Trial registration number (TRN) and date of registration: This clinical trial was registered at http://clinicaltrials.gov (Number: NCT05816200; date: May 08, 2023).
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Acknowledgements
We thank the Stomatology Service, Department of Dentistry, Federal University of Rio Grande do Norte, for providing the resources necessary for the study.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Cristianne Kalinne Santos Medeiros and Maria do Carmo Pessoa Nogueira Serrão. The first draft of the manuscript was written by Cristianne Kalinne Santos Medeiros and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Ethics Committee of the Federal University of Rio Grande do Norte (No. 4.066.032).
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Medeiros, C.K.S., Serrão, M.d.C.P.N., de Lima, A.A.S. et al. Comparative analysis of photobiomodulation therapy and transcutaneous electrical nerve stimulation for burning mouth: a randomized clinical trial. Clin Oral Invest 27, 6157–6165 (2023). https://doi.org/10.1007/s00784-023-05232-7
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DOI: https://doi.org/10.1007/s00784-023-05232-7