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Volume 57
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Article

Short-Term Effect of Orthodontic Treatment with Clear Aligners on Pain and sEMG Activity of Masticatory Muscles

by
Alessandro Nota
1,*,
Silvia Caruso
2,
Shideh Ehsani
1,
Gianmaria Fabrizio Ferrazzano
3,4,
Roberto Gatto
2 and
Simona Tecco
1
1
Dental School, Vita-Salute San Raffaele University and IRCCS San Raffaele Hospital, 20132 Milan, Italy
2
Department of Life, Health and Environmental Science, University of L’Aquila, 67100 L’Aquila, Italy
3
Department of Neuroscience, Reproductive and Oral Science, School of Paediatric Dentistry, University of Naples “Federico II”, 34012 Naples, Italy
4
Unesco Chair in Health Education and Sustainable Development, University of Naples “Federico II”, 34012 Naples, Italy
*
Author to whom correspondence should be addressed.
Medicina 2021, 57(2), 178; https://doi.org/10.3390/medicina57020178
Submission received: 11 January 2021 / Revised: 31 January 2021 / Accepted: 16 February 2021 / Published: 19 February 2021
(This article belongs to the Special Issue Orthodontic Treatment and Its Impact on Oral Health-Related Quality of Life)
Versions Notes

Abstract

Background and objectives: The aim of this study is to evaluate mandibular elevator muscles activity and pain on palpation in the early stages of orthodontic treatment with clear aligners using surface electromyography (sEMG). Materials and methods: Surface electromyography (sEMG) activity and pain level on muscle palpation of masseter and anterior temporalis muscles were recorded in a sample of 16 adult subjects (aged 18–32 years; mean 22.5 +/− 3.5 SD) undergoing orthodontic treatment with clear aligners before the treatment (T0), after 1 month of treatment (two clear aligners) (T1), and after 3 months of treatment (T2) (six clear aligners). A chi-square test for nominal data, a Friedman test, and a Wilcoxon-signed rank test as post hoc analysis were applied. Results: No statistically significant differences in muscular pain were observed. At T1, the sEMG activity of masseter muscles at mandibular rest position showed a statistically significant reduction, but after 3 months (T2), the data appeared similar to T0 (p = 0.03 and p = 0.02). Conclusions: During the treatment with clear aligners, subjects could experience an initial reduction in the masseter basal activity after 1 month of treatment. This effect tends to decrease to baseline levels after 3 months of therapy.
Keywords: interceptive orthodontics; removable orthodontic appliances; electromyography; masticatory muscles; orthodontics interceptive orthodontics; removable orthodontic appliances; electromyography; masticatory muscles; orthodontics

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MDPI and ACS Style

Nota, A.; Caruso, S.; Ehsani, S.; Ferrazzano, G.F.; Gatto, R.; Tecco, S. Short-Term Effect of Orthodontic Treatment with Clear Aligners on Pain and sEMG Activity of Masticatory Muscles. Medicina 2021, 57, 178. https://doi.org/10.3390/medicina57020178

AMA Style

Nota A, Caruso S, Ehsani S, Ferrazzano GF, Gatto R, Tecco S. Short-Term Effect of Orthodontic Treatment with Clear Aligners on Pain and sEMG Activity of Masticatory Muscles. Medicina. 2021; 57(2):178. https://doi.org/10.3390/medicina57020178

Chicago/Turabian Style

Nota, Alessandro, Silvia Caruso, Shideh Ehsani, Gianmaria Fabrizio Ferrazzano, Roberto Gatto, and Simona Tecco. 2021. "Short-Term Effect of Orthodontic Treatment with Clear Aligners on Pain and sEMG Activity of Masticatory Muscles" Medicina 57, no. 2: 178. https://doi.org/10.3390/medicina57020178

APA Style

Nota, A., Caruso, S., Ehsani, S., Ferrazzano, G. F., Gatto, R., & Tecco, S. (2021). Short-Term Effect of Orthodontic Treatment with Clear Aligners on Pain and sEMG Activity of Masticatory Muscles. Medicina, 57(2), 178. https://doi.org/10.3390/medicina57020178

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