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Randomized clinical trial comparing the violet light emitting diode system and other tooth whitening techniques

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Abstract

Aim

to evaluate, through a clinical trial, the effectiveness and sensitivity of tooth whitening techniques using violet light emitting diodes (LED), comparing with other whitening techniques. Methodology: 75 patients were selected to undergo tooth whitening, randomly distributed into five different treatment groups: G1 (35% hydrogen peroxide), G2 (35% hydrogen peroxide + Green LED), G3 (35% hydrogen peroxide at 35% + Blue LED), G4 (35% hydrogen peroxide + Violet LED) and G5 (Violet LED). Sensitivity measurement was recorded using the Visual Analogue Scale (VAS) from 0 to 10; tooth color measurement was performed before (T0) and after 30 days of whitening treatment (T1) using Easyshade Advance 4.0 Vita—Wilcos® dental spectrophotometer. Statistical analysis was performed using the Fisher and Kruskal–Wallis exact test at significance level of p < 0.05. Results: the enamel whitening effect was observed in all groups, with significant changes in G1. With regard to sensitivity, no statistically significant differences were found between groups. Conclusion: In G5, no participant reported post-whitening sensitivity, suggesting that treatment with violet LED showed the best sensitivity outcomes, changing the enamel color one more tone on the color scale.

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Author information

Authors and Affiliations

  1. Graduate Program in Dentistry, State University of Paraiba, Campina Grande, PB, Brazil

    Alieny Cristina Duarte Ferreira

  2. Departamento de Odontologia - Programa de Pós-Graduação Em Odontologia, Graduate Program in Dentistry, Universidade Estadual da Paraíba, State University of Paraiba, Bairro, Universitário- Campina Grande, Rua Baraúna, 531, Natal, PB, Brazil

    Maria Helena Chaves de Vasconcelos Catão

Authors
  1. Alieny Cristina Duarte Ferreira
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  2. Maria Helena Chaves de Vasconcelos Catão
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Alieny Cristina Duarte Ferreira and Maria Helena Chaves de Vasconcelos Catão. The first draft of the manuscript was written by Alieny Cristina Duarte Ferreira and Maria Helena Chaves de Vasconcelos Catão and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Maria Helena Chaves de Vasconcelos Catão.

Ethics declarations

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 Committee of the State University of Paraiba (UEPB) (Nº. 09510119.2.0000.5187).

Informed Consent

Not Applicable.

Clinical relevance

Despite presenting lower whitening results compared to those obtained with the traditional technique, the use of violet LED in tooth whitening does not generate negative effects in terms of sensitivity.

Conflict of interest

The authors declare that there is no conflict of interest.

Competing Interest

Not Applicable.

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Ferreira, A.C.D., de Vasconcelos Catão, M.H.C. Randomized clinical trial comparing the violet light emitting diode system and other tooth whitening techniques. Lasers Med Sci 38, 219 (2023). https://doi.org/10.1007/s10103-023-03884-1

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