Penetration of resin sealants into etched human enamel

Hayashi, Shozo; Otsuki, Akira

doi:10.5834/jdh.24.83

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Thus, the loose mineral projections of the prism bodies will be sooner of later eroded by daily paste brush ing, and finally the acid-attacked enamel layer [Kuroiwa, 1990] may be entirely lost by abrasion. It is said that the acid-attacked enamel layer, where resin tags can penetrate into the gaps of the dissolved prism sheath regions [Refief, 1973;Silverstone, 1975], measured about 20-30 pm in depth under conditions of etching with 30% phosphoric acid for 30 s [Hayashi et al, 1974], During the abrasive process, we fear that enamel caries may initially occur in such an acid-attacked layer showing a relatively low density of crystallites.…”

Section: Discussionmentioning

confidence: 99%

Brushing-lnduced Effects with and without a Non-Fluoride Abrasive Dentifrice on Remineralization of Enamel Surfaces Etched with Phosphoric Acid

Kuroiwa

Kodaka²,

Abe³

1994

Caries Res

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The remineralization of acid-etched enamel after brushing with and without a non-fluoride abrasive dentifrice was investigated using scanning electron microscopy after sodium hypochlorite (NaOCl) or ethylenediamine tetra-acetic acid treatment, of the specimens. Ground enamel pieces were etched with 30% phosphoric acid for 60 s and attached to resin plates. They were exposed to the oral environment of 4 subjects for 8 weeks and brushed for 1 min daily. Paste and brushing caused the acid-etched enamel to erode selectively, i.e., deep grooves were formed in the prism peripheral regions, while projections of the prism bodies showing a relatively low density of crystallites were retained. Brushing without dentifrice, on the other hand, caused about 0.5 μm thick pellicle with tag-like structures to cover the etched enamel. Fine mineral granules, presumably derived from saliva and minute fragments of etched crystallites, were precipitated on the enamel surface as a thin layer with the pellicle. These results indicate that daily brushing without dentifrice induces the remineralization of acid-etched enamel by depositing salivary components, while paste brushing will lead to abrasion of the weakened enamel.

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Section: Discussionmentioning

confidence: 99%

Brushing-lnduced Effects with and without a Non-Fluoride Abrasive Dentifrice on Remineralization of Enamel Surfaces Etched with Phosphoric Acid

Kuroiwa

Kodaka²,

Abe³

1994

Caries Res

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Effect of Pretreatment with Ethanol Containing Fluoride on Etched Enamel Surface as Evaluated by Scanning Electron Microscopy, Optical Microscopy, and Tensile Bond Strength Measurement

1977

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The effects of pretreatment with a fluoride-containing ethanol solution on etched enamel surfaces before application of sealant were examined using scanning electron microscopy, optical microscopy, and tensile bond strength determinations. The results suggested that when etched enamel surfaces are treated with ethanol containing no more than 250 ppm fluorine in potassium fluoride, there is no interference with the bonding of the sealant to the treated, etched anamel surface.

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Penetration of resin sealants into etched human enamel

Cited by 2 publications

References 14 publications

Brushing-lnduced Effects with and without a Non-Fluoride Abrasive Dentifrice on Remineralization of Enamel Surfaces Etched with Phosphoric Acid

Brushing-lnduced Effects with and without a Non-Fluoride Abrasive Dentifrice on Remineralization of Enamel Surfaces Etched with Phosphoric Acid

Effect of Pretreatment with Ethanol Containing Fluoride on Etched Enamel Surface as Evaluated by Scanning Electron Microscopy, Optical Microscopy, and Tensile Bond Strength Measurement

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