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Inhibition of demineralization around the enamel-dentin/restoration interface after dentin pretreatment with TiF4 and self-etching adhesive systems

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Abstract

Objectives

The objective of this study was to evaluate the inhibition of demineralization around enamel-dentin/restoration interface after dentin pretreatment with 2.5 % titanium tetrafluoride (TiF4).

Materials and methods

Forty dental class V cavities at the cementoenamel junction were distributed into four groups (n = 10), according to the presence or absence of TiF4 and to the adhesive system (Clearfil SE Bond/CL and Adper EasyOne/AD), and restored with a resin composite. A dynamic pH cycling model was used to induce the development of artificial caries lesions. After sectioning the dental blocks, Knoop microhardness tests were performed at different depths (20, 40, and 60 μm from the occlusal margin of the restoration) and at different distances (100, 200, and 300 μm from the adhesive interface). Repeated measures three-way analysis of variance (ANOVA) and Tukey’s test were used (α = 0.05).

Results

For enamel, there were no differences in the microhardness values for CL, AD, and TiF4-AD at depths, regardless of the distances. Considering each depth, there were no significant differences among treatments. For dentin, ANOVA showed no significant interaction among the independent variables treatment*distance*depth (p = 0.994), no significant interaction between treatment*depth (p = 0.722), no significant interaction between treatment*distance (p = 0.265), no significant interaction between depth*distance (p = 0.365), and no significant effect on treatment (p = 0.151), depth (p = 0.067), or distance (p = 0.251).

Conclusions

Dentin pretreatment of the cavity walls with TiF4 before self-etching adhesive systems was not effective in inhibiting demineralization around the enamel-dentin/restoration interfaces.

Clinical relevance

The mechanism of incorporating fluoride in enamel and dentin of the cavity walls to inhibit demineralization around restorations seems ineffective when using TiF4 as a dentin pretreatment.

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Acknowledgments

The authors would like to thank FAPESP foundation for providing grants (process number 2011/02812-7).

Conflict of interest

The authors declare that they have no competing interests.

Disclosure statement

The authors have no financial, economic, commercial, and/or professional interests related to topics presented in the manuscript.

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Authors and Affiliations

  1. São Leopoldo Mandic School of Dentistry and Research Institute, Campinas, São Paulo, Brazil

    Enrico Coser Bridi, Flávia Lucisano Botelho do Amaral, Fabiana Mantovani Gomes França, Cecilia Pedroso Turssi & Roberta Tarkany Basting

  2. Departamento de Odontologia Restauradora–Dentística, Faculdade de Odontologia e Instituto de Pesquisas São Leopoldo Mandic, Rua José Rocha Junqueira, 13. Bairro Swift, Campinas, SP, CEP: 13045-755, Brazil

    Roberta Tarkany Basting

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  1. Enrico Coser Bridi
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  2. Flávia Lucisano Botelho do Amaral
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  4. Cecilia Pedroso Turssi
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Correspondence to Roberta Tarkany Basting.

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Bridi, E.C., do Amaral, F.L.B., França, F.M.G. et al. Inhibition of demineralization around the enamel-dentin/restoration interface after dentin pretreatment with TiF4 and self-etching adhesive systems. Clin Oral Invest 20, 857–863 (2016). https://doi.org/10.1007/s00784-015-1573-6

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  • DOI: https://doi.org/10.1007/s00784-015-1573-6

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