Abstract
Objectives
The effects of different concentrations of titanium dioxide (TiO2) into 40% hydrogen peroxide (HP) were evaluated as regards the effectiveness of dental color change either associated with activation by polywave LED light or not.
Materials and methods
TiO2 (0, 1, 5, or 10%) was incorporated into HP to be applied during in-office bleaching (3 sessions/40 min each). Polywave LED light (Valo Corded/Ultradent) was applied or not in activation cycles of 15 s (total time of 2 min). The color of 80 third molars separated into groups according to TiO2 concentration and light activation (n = 10) was evaluated at baseline and at time intervals after the 1st, 2nd, and 3rd bleaching sessions.
Results
WID value was significantly higher when using HP with 5% TiO2 in the 2nd session than the values in the other groups (p < 0.05). After the 2nd and 3rd sessions, the ΔEab value was significantly higher when activated with light (p < 0.05) for all agents containing TiO2 or not. Zeta potential and pH of the agents were not modified by incorporating TiO2 at the different concentrations.
Conclusions
The 5% TiO2 in the bleaching agent could enhance tooth bleaching, even without light application. Association with polywave LED light potentiated the color change, irrespective of the presence of TiO2 in the bleaching gel.
Clinical significance
HP with 5% TiO2 could lead to a greater tooth bleaching response in the 2nd clinical session, as well as the polywave light can enhance color change.
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Data Availability
Authors can confirm that all relevant data are included in the article and other supplementary information are available from the corresponding author upon reasonable request.
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Edina Veloso Gonçalves Antunes and Rosanna Tarkany Basting were responsible for developing the experiment, discussion of the results, and writing the paper. Flávia Lucisano Botelho do Amaral, Fabiana Mantovani Gomes França, Kamila Rosamilia Kantovitz, and Cecilia Pedroso Turssi interpreted the results and wrote the paper. Erika Soares Bronze-Uhle and Paulo Noronha Lisboa Filho developed and provided the TiO2. Roberta Tarkany Basting developed the experimental design, wrote the paper, and helped with the discussion.
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Antunes, E.V.G., Basting, R.T., do Amaral, F.L.B. et al. Titanium dioxide nanotubes in a hydrogen peroxide-based bleaching agent: physicochemical properties and effectiveness of dental bleaching under the influence of a poliwave led light activation. Clin Oral Invest 27, 1745–1755 (2023). https://doi.org/10.1007/s00784-022-04802-5
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DOI: https://doi.org/10.1007/s00784-022-04802-5