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- W4304098874 abstract "Abstract The aim of this placebo-controlled randomized in situ study was to evaluate the effect of different surface polishing protocols on enamel roughness, bacterial adhesion and caries-protective effect of a resin infiltrant. Eighty-four bovine enamel samples having artificial caries lesions were treated with a resinous infiltrant and afterwards randomly dividided into five polishing protocols: aluminum oxide flexible disks (Al 2 O 3 -Disks), silicon carbide tips (SIC-Tips), silicon carbide brush (SIC-Brush), silicon carbide polyester strips (SIC-Strips) or no polishing [negative control (NC)]. Average surface roughness (Ra) was assessed by profilometry. Samples were mounted in palatal appliances under a mesh for biofilm accumulation. Fifteen volunteers wore the intraoral appliances (14-days) and cariogenic challenge was triggered by sucrose solutions . Biofilm formed was collected for microbiological analysis of caries-related bacteria ( Streptococcus mutans, Lactobacillus acidophilus ) and demineralization was assessed by cross-sectional microhardness. Mean Knoop hardness numbers (Kg/mm 2 ) were plotted over lesion depth (µm) and area under the lesion curve was subtracted from sound enamel to determine demineralization (ΔS, Kg/mm 2 xµm). Data were analyzed by ANOVA and post-hoc comparisons (α=0.05). NC resulted in significantly higher Ra means than Al 2 O 3 -Disks and SIC-Strips. Bacterial counts were not significantly different between the groups (p>0.05). Regards ΔS means, however none of the groups were significantly different to NC (6,983.3 Kg/mm 2 xµm /CI:4,246.1–9,720.5, p>0.05). Conclusions: Polishing protocols (Al 2 O 3 -Disks, SIC-Strips) significantly decreseased roughness of infiltrated-enamel, however none of the polishing protocols could signicantly decrease bacterial counts nor resulted in significant less demineralization." @default.
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- W4304098874 date "2022-10-10" @default.
- W4304098874 modified "2023-09-27" @default.
- W4304098874 title "Randomized in situ evaluation of surface polishing protocols on the caries-protective effect of resin Infiltrant" @default.
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- W4304098874 doi "https://doi.org/10.21203/rs.3.rs-2104258/v1" @default.
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