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Effect of the TiO2 solution combined with 980-nm diode laser on the bond strength of the root canal filling

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Abstract

Purpose

To evaluate the effect of the 5% titanium dioxide particles (TiO2) combined with 980-nm diode laser irradiation on the bond strength and quality of the root canal filling.

Methods

Forty-eight bovine incisors were prepared and divided into four groups according to the dentin treatments’ protocols: distilled water, 5% TiO2 solution, 980-nm diode laser irradiation, or TiO2 combined with diode laser. The canals were dried and filled with AH Plus. The push-out test was performed, followed by the failure analysis, and the interface morphology was analyzed under SEM.

Results

The TiO2 combined with the diode laser had the highest bond strength (p < 0.001). The lower bond strength values were found in distilled water and TiO2 groups. No difference was found among thirds (p = 0.675) and interactions of the factors (p = 0.748). The SEM analysis showed better sealer adaptation and penetration into the canal walls after the combined treatment.

Conclusion

5% TiO2 solution combined with 980-nm diode laser irradiation improved the bond strength of the root canal filling and the quality of the adhesion interface. The TiO2 solution could be a promising tool used for light scattering.

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Acknowledgements

All authors have contributed significantly and are in agreement with the manuscript.

Funding

This work was supported by CAPES (Coordination for the Improvement of Higher Education Personnel – Brazil). The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.

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Authors and Affiliations

  1. Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Av. Café S/N, Monte Alegre, Ribeirão Preto, São Paulo, 14040-904, Brazil

    Laís Lima Pelozo, Aline Evangelista Souza-Gabriel, Jennifer Struciatti, Antônio Miranda Cruz-Filho & Ricardo Novak Savioli

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  1. Laís Lima Pelozo
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  2. Aline Evangelista Souza-Gabriel
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  3. Jennifer Struciatti
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Contributions

Pelozo LL.: methodology and writing — original draft. Souza-Gabriel A.E.: supervision, resources, and writing — review and editing. Struciatti J.: conceptualization, methodology, investigation, and data curation. Cruz-Filho AM.: visualization and resources. Savioli RN.: software, validation, formal analysis, and project administration.

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Correspondence to Laís Lima Pelozo.

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Pelozo, L.L., Souza-Gabriel, A.E., Struciatti, J. et al. Effect of the TiO2 solution combined with 980-nm diode laser on the bond strength of the root canal filling. Laser Dent Sci 7, 227–233 (2023). https://doi.org/10.1007/s41547-023-00201-5

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