Abstract
Objective
This study evaluated the preventive effect of a chitosan gel containing CaneCPI-5 against enamel erosion and erosion + abrasion in situ.
Methods
Sixteen volunteers participated in a crossover, double-blind protocol, comprising 4 phases: (1) no treatment (Nt); (2) chitosan gel (Cg); (3) chitosan gel + 12,300 ppm NaF (Cg + NaF); and (4) chitosan gel + 0.1 mg/mL CaneCPI-5 (Cg + Cane). Volunteers wore an appliance containing 4 specimens. Once/day, they applied the gel (except for Nt) (4 min/specimen). Erosive challenges were performed extra-orally (0.1% citric acid, 90 s, 4 × /day; ERO). Specimens were also abraded (toothbrush, 15 s/specimen, 2 × /day; ERO + ABR). Enamel wear was assessed by profilometry and relative surface reflection intensity (%SRI). Two-way RM-ANOVA/Sidak’s tests and Spearman’s correlation were used (p < 0.05).
Results
For profilometry, ERO + ABR promoted significantly greater wear when compared with ERO. There was a significant difference among all treatments. The lowest enamel loss occurred for Cg + Cane, followed by Cg + NaF, Cg, and Nt (p < 0.05). The %SRI was significantly lower for ERO + ABR when compared to ERO, only for the Nt group. The greatest %SRI was found for the Cg + NaF and Cg + Cane groups, which did not differ significantly, regardless of the conditions. The lowest %SRI was found for the Nt and Cg groups, which did not differ from each other, regardless of the conditions. The Nt group did not differ significantly from the Cg + NaF (ERO). There was a significant correlation between both analyses.
Conclusion
The incorporation of CaneCPI-5 in the chitosan gel prevented erosive wear in situ.
Clinical relevance
These results open a new perspective for the use of CaneCPI-5 in other application vehicles, such as chitosan gel.
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Funding
The authors thank FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) for concession of scholarship provided to Vinícius Taioqui Pelá (2017/04857–4), Leonardo Brito (2021/02366–9), Joana Claudio Pieretti (2020/03646–2) and regular research grants to Marília Afonso Rabelo Buzalaf (2018/12041–7) and to Amedea Barozzi Seabra (2018/08194–2). Flávio Henrique-Silva and Amedea Barozzi Seabra are the recipients of Research Productivity Scholarship from the National Council for Research and Development (CNPq 311746/2017–9, CNPq 313117/2019–5, respectively). M.A.R.B is the recipient of a Research Productivity Scholarship from the National Council for Research and Development (CNPq 302371/2018–4). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Brazil, under finance code 001.
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Conceptualization: Marília Afonso Rabelo Buzalaf; methodology: Vinícius Taioqui Pelá, Leonardo Brito, Even Akemi Taira, Joana Claudio Pieretti, Eduardo Pereira de Souza; formal analysis and investigation: Vinícius Taioqui Pelá, Flávio Henrique-Silva, Amedea Barozzi Seabra, Cristiane de Almeida Baldini Cardoso, Sonia Groisman, Marcela Charantola Rodrigues, Adrian Lussi, Thiago Saads Carvalho; writing—original draft preparation: Vinícius Taioqui Pelá and Marília Afonso Rabelo Buzalaf. All authors read and approved the final manuscript.
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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. This work was approved by the Research Ethics Committee of Bauru School of Dentistry, University of São Paulo, SP, Brazil (CAAE: 86,783,418.8.0000.5417). The use of bovine teeth for this research was also approved by the Ethics Committee on Animal Use of the Bauru School of Dentistry, University of São Paulo (Protocol: 005/2018).
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Informed consent was obtained from all individual participants included in the study. Sixteen volunteers (eight women and eight men) took part in the study, after signing an informed consent document. The volunteers participated in 4 crossover and double-blind phases.
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The authors declare no competing interests.
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Pelá, V.T., Brito, L., Taira, E.A. et al. Preventive effect of chitosan gel containing CaneCPI-5 against enamel erosive wear in situ. Clin Oral Invest 26, 6511–6519 (2022). https://doi.org/10.1007/s00784-022-04600-z
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DOI: https://doi.org/10.1007/s00784-022-04600-z