The Mechanism of Caries of Dental Enamel

Fosdick, L.S.; Hutchinson, A. C. W.

doi:10.1111/j.1749-6632.1965.tb34840.x

Cited by 16 publications

(3 citation statements)

References 5 publications

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“…The chemistry of enamel caries, kinetics and mechanisms of dental enamel demineralization were discussed in detail in special reviews and experimental papers (e.g. Fosdick and Hutchinson, 1965;Thylstrup et al, 1994;Robinson et al, 2000;Oliveira et al, 2002;Anderson et al, 2004;Hannig et al, 2005).…”

Section: àmentioning

confidence: 99%

Principles of demineralization: Modern strategies for the isolation of organic frameworks

Ehrlich

Koutsoukos

Demadis

et al. 2009

Micron

106

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Section: àmentioning

confidence: 99%

Principles of demineralization: Modern strategies for the isolation of organic frameworks

Ehrlich

Koutsoukos

Demadis

et al. 2009

Micron

106

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“…It has been shown by H irai [1969] that the interprismatic area is mainly of inorganic crystalline nature. The preferred transport of ions through the interprismatic substance, can be inferred from several types of evi dence [Fosdick et al, 1965;F lim et al, 1974], The considerable porosity Fig. 8.…”

Section: Discussionmentioning

confidence: 99%

Effect of Monofluorophosphate on the Pathways followed by Cariogenic Agents

Jongebloed¹,

Molenaar²,

Arends³

1975

Caries Res

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The purpose of this study was to investigate the ultra structural changes in human enamel – untreated and pre-treated with Na₂FPO₃ – after an artificial carious attack. With the scanning electronmicroscope the influence of local fluoride application on surface topography and on the caries lesions in cross-sections was investigated. The results show that in Na₂FPO₃ pre-treated specimen the prism core dissolved faster than the interprismatic areas. The experiments indicated forthermore that most likely FPO₃²^–– ions influence both transport of ions in the lesion and in the surface layer; FPO₃^2–– application caused a considerable ‘clogging’ of the interprismatic areas. A preparation method is outlined by which a detailed comparison of pre-treated and untreated enamel originally located less than 0.25 mm apart is possible.

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“…Microradiography of slightly carious enamel with the prisms sectioned transversely shows a mosaic pattern of demineralized prism cores surrounded by mineral-dense rims (Darling, 1963), as does BE imaging. However, Fosdick and Hutchinson (1965) claimed that the reverse pattern, mineral-rich cores, is more common in very early lesions. In low magnification, we have observed one specimen by BE which appeared to have this "reverse" pattern, but at high magnification it showed a blotchy distribution of mineral within the prism cores, and the usual mineral-rich prism peripheries (Fig.…”

Section: Resultsmentioning

confidence: 97%

Microstructural Features of Carious Human Enamel Imaged with Back-scattered Electrons

Pearce

Nelson

1989

J Dent Res

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We have used back-scattered electrons (BE) in the scanning electron microscope to produce mineral density images of enamel. Flat surfaces of artificially-carious enamel, softened in an intra-oral experiment, and naturally-carious (white spot) enamel were polished to a high gloss with diamond lapping compound, rendering them almost featureless by secondary electron scanning electron microscopy. They were then examined at 10 to 30 kV in a Philips 505 instrument fitted with a 4-quadrant BE detector. Study of surfaces prepared approximately parallel to the natural surface showed that mineral was lost from both prism core and the interprismatic region, leaving a thin mineral-rich rim at the prism periphery. The same lesions viewed longitudinally on a surface prepared perpendicular to the natural surface showed mineral-rich bands at the prism margins in the outer enamel. Near the advancing front of the lesion, the prism junctions were widened and the prism cores sometimes hypermineralized. Natural lesions sectioned in the prism long axis showed features previously seen with other techniques, e.g., cross-striations and striae of Retzius, but in much greater detail. Mineral enrichment at the prism periphery in the lesion body and a widening of the prism junction at the advancing fronts of lesions in permanent teeth were most obvious. Calculations showed that with an accelerating voltage of 30 kV, the images reflected mineral density up to 4 microns beneath the surface. BE microscopy produces a high-resolution image of mineral loss or gain in carious enamel, with relatively easy sample preparation.

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The Mechanism of Caries of Dental Enamel

Cited by 16 publications

References 5 publications

Principles of demineralization: Modern strategies for the isolation of organic frameworks

Principles of demineralization: Modern strategies for the isolation of organic frameworks

Effect of Monofluorophosphate on the Pathways followed by Cariogenic Agents

Microstructural Features of Carious Human Enamel Imaged with Back-scattered Electrons

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