Surface characteristics of a modified acidulated phosphate fluoride gel with nano‐hydroxyapatite coating applied on bovine enamel subjected to an erosive environment

This study evaluated the antierosive effect applying a modified acidulated phosphate fluoride (APF) gel containing nano‐hydroxyapatite (nHAp) on the enamel surface before erosion. After polishing, the exposed flat enamel surfaces (n = 7/group) from bovine incisors were treated with artificial saliva...

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Bibliographic Details
Published in:Microscopy research and technique 2018-12, Vol.81 (12), p.1456-1466
Main Authors: Soares, Luís Eduardo Silva, da Silva Magalhães, Juarez, Marciano, Fernanda Roberta, Lobo, Anderson Oliveira
Format: Article
Language:English
Subjects:
Acidulated Phosphate Fluoride - administration & dosage
Acidulated Phosphate Fluoride - chemistry
Animals
Cattle
Composition
Demineralization
Demineralizing
Dental enamel
Dental Enamel - drug effects
Dental Enamel - metabolism
Dental Enamel - ultrastructure
Durapatite - administration & dosage
Durapatite - chemistry
Enamel
energy dispersive X‐ray fluorescence spectrometry
Erosion
Fluorescence
fluoride
Fluorides
Fruit juices
Gels - administration & dosage
Gels - chemistry
Humans
Hydroxyapatite
Incisors
Microscopy, Electron, Scanning
Minerals - metabolism
Morphology
Phosphates
Remineralization
Roughness
Saliva
Scanning electron microscopy
Spectrometry
Surface properties
Tooth Demineralization - metabolism
Tooth Demineralization - prevention & control
Tooth Erosion - metabolism
Tooth Erosion - prevention & control
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Summary:This study evaluated the antierosive effect applying a modified acidulated phosphate fluoride (APF) gel containing nano‐hydroxyapatite (nHAp) on the enamel surface before erosion. After polishing, the exposed flat enamel surfaces (n = 7/group) from bovine incisors were treated with artificial saliva (S ‐ negative control), orange juice (ERO), APF gel (positive control) and APF_nHAp gel. All samples were subjected to six cycles of demineralization (orange juice, pH ~ 3.5, 10 min) followed by remineralization (saliva, 37°C, 1 hr). The enamel surface morphology, topography, and inorganic composition were analyzed using scanning electron microscopy, roughness testing, and micro energy‐dispersive X‐ray fluorescence spectrometry, respectively. The mean (standard deviation) roughness values (Ra, μm) were S, 0.13 (0.05); ERO, 0.25 (0.07); APF, 0.22 (0.08); and APF_nHAp, 0.17 (0.04). Ra values were significantly higher after ERO (p
ISSN:1059-910X
1097-0029
DOI:10.1002/jemt.23146