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Effect of high-fluoride dentifrice and bracket bonding composite material on enamel demineralization in situ

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Abstract

Objective

This in situ study evaluated the effect of high-fluoride dentifrice (5000 μg F−/g) and fluoride-containing bonding composite resin on enamel demineralization adjacent to orthodontic brackets.

Methods

Ten volunteers wore palatal appliances containing bovine enamel blocks with metallic brackets bonded with fluoride-free or fluoride-containing composite resin. During three phases of 14 days each, three dentifrices with different fluoride concentrations (0, 1100, and 5000 μg F−/g) were tested. The cariogenic challenge consisted of 20% sucrose solution dripped 8x/day onto the dental blocks. At the end of each phase, biofilm formed was collected for fluoride analysis. Cross section hardness was performed in enamel blocks, and the lesion area was calculated. Data were analyzed by two-way ANOVA followed by Tukey post hoc test (α = 5%).

Results

The only signicant factor for all the variables under study was the dentifrice. Smaller lesion area and higher fluoride concentration on biofilm were found in 5000 μg F−/g group, irrespective of bonding composite resin (p < 0.001). Neither bracket-bonding composite resin nor the interaction between the factors was statistically significant (p > 0.05) for all the variables.

Conclusion

High-fluoride dentifrice is effective in reducing demineralization on enamel adjacent to orthodontic brackets, while the fluoride-containing bonding composite resin does not influence it.

Clinical Significance

Since high-fluoride dentifrice was able to reduce demineralization adjacent to brackets, it can be an option to caries management in orthodontics patients.

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Acknowledgments

The authors express their appreciation to the volunteers for their valuable participation.

Funding

This study had financial support from Coordination of Improvement of Higher-Level Personnel (CAPES) – Procad Program (Process n. 88881.068416/2014-01).

Author information

Authors and Affiliations

  1. Restorative Dentistry Department, Federal University of Piauí, Teresina, Piauí, Brazil

    Robson S. Ferreira & Glauber Campos Vale

  2. Physiological Sciences Department, Piracicaba Dental School, Piracicaba, Brazil

    Robson S. Ferreira, Antonio Pedro Ricomini-Filho & Cínthia P. Tabchoury

  3. Restorative Dentistry Department, Campus Universitário Ministro Petrônio Portella – SG 10, Bairro Ininga, Teresina, Piauí, CEP: 64049-550, Brazil

    Glauber Campos Vale

Authors
  1. Robson S. Ferreira
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  2. Antonio Pedro Ricomini-Filho
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  4. Glauber Campos Vale
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Correspondence to Glauber Campos Vale.

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Ferreira, R.S., Ricomini-Filho, A.P., Tabchoury, C.P. et al. Effect of high-fluoride dentifrice and bracket bonding composite material on enamel demineralization in situ. Clin Oral Invest 24, 3105–3112 (2020). https://doi.org/10.1007/s00784-019-03182-7

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