Evaluation of the mineralizing capacity of varnishes by electrical impedance spectroscopy: an in vitro study / Avaliação da capacidade mineralizante de vernizes por espectroscopia de impedância elétrica: um estudo in vitro

Maurício Vaz Munhão, João Victor Frazão Câmara, Ana Clara Correa Duarte Simões, Marijoe Braga Alves Simões, Renato Feres de Carvalho Vianna, Denise Fernandes Lopez Nascimento, Maria do Céu Pinto do Amaral, Angela Alexandre Meira Dias, Sonia Groisman

Abstract


Background: To evaluate in vitro and compare a remineralizing capacity of three different types of varnishes. Material and Methods: The sample consisted of 24 third molars found in cycles of demineralization and remineralization (DES X RE) and distributed in three groups: Group 1 - fluoride varnish (NaF 5%; Duraphat, Colgate, São Paulo, Brazil), Group 2 - casein phosphopeptide varnish - amorphous calcium phosphate (CPP-ACP 10%) (Recaldent GC, Tokyo, Japan), Group 3 - 1% chlorhexidine varnish (Cervitec® Plus - Ivoclar Vivadent), applied to the mesial and distal as control. The mineral content of the enamel was evaluated using the CarieScan ProTM, at the central point of the sites at three times: before the DES X RE cycle, after it and after using the varnishes. Results: The results were obtained from the descriptive analysis of data using the Excel tool. In G1, the sodium fluoride varnish, Duraphat, showed the best effectiveness in the remineralization process, which occurred in 75% of the sites, followed by G2, which remineralized 50% of the sites and G3, which was less efficient, remineralizing only 31.25% of the sites. Conclusion: There is variation in the remineralizing capacity among the varnishes studied. The varnish based on 5% sodium fluoride, Duraphat, showed the best effectiveness in the remineralization process, also acting at a distance.


Keywords


Dental Caries, Chlorhexidine, Demineralization, Fluorides, Topical, Electric Impedance.

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DOI: https://doi.org/10.34117/bjdv.v7i5.29365

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