Effects of sealants on in vitro demineralization of enamel surrounding orthodontic brackets
DOI:
https://doi.org/10.33448/rsd-v10i11.19923Keywords:
Orthodontics; Dental Caries; Diagnostic; Sealants.Abstract
The in vitro study considered the effects of CLINPRO™ XT and FLUROSHIELD® sealants in preventing demineralization in dental enamel in the region circumscribed to orthodontic brackets, through microhardness and scanning electron microscopy. Sixty crowns of bovine teeth were used, randomly divided into groups(n: 20): G1 (brackets/control), G2 (brackets/CLINPRO™) and G3 (brackets/FLUROSHIELD®). The samples were submitted to cariogenic challenge (DES/RE), reviewed for Knoop microhardness (25 g, 10 s), on the surface of the dental enamel, from the bracket at distances of 1,000 µm, 2,000 µm and 3,000 µm and 100 µm, 200 µm, 300 µm and 400 µm at the in-depth interface, in the incisal and cervical directions. SEM images were obtained from the surface in the cervical region. The results analyzed by ANOVA and Tukey statistical tests (p<0.05) showed significant influence on the microhardness values in the Treatment/Distance and Treatment/Distance/Region interactions (p=0.00) in groups G2 and G3 showed greater microhardness of enamel in areas closest to the bracket when sealant is applied, higher microhardness values with CLINPRO™ sealant. In samples that did not receive sealant, no influence of these interactions with microhardness was observed (p>0.05). CLINPRO™ sealant showed the highest microhardness and effectiveness values when compared to the control and FLUROSHIELD sealant groups. It was concluded that sealants were more effective in preventing enamel demineralization in regions closer to the brackets and less effective in more distant regions. The chemical composition and properties of the sealant interfere with its action to reduce demineralization of tooth enamel.
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Copyright (c) 2021 Taís Pereira Leal; Ricardo Scarparo Navarro; Patrícia Moreira de Freitas; Caleb Shitsuka ; Heide Mendonça Moreira de Souza; Maristela Dutra Corrêa; Cristina Lúcia Feijó Ortolani
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