Comparison of Artificial Caries-Like Lesions by Quantitative Microradiography and Microhardness Profiles

Featherstone, J.D.B.; Cate, J.M. ten; Shariati, Mohammad; Arends, J

doi:10.1159/000260692

Cited by 443 publications

(405 citation statements)

References 6 publications

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“…At the pre-beverage intake stage, both in human and bovine enamel, the Knoop hardness amounted to some 420 KHN, values slightly higher than those previously reported (17,18), which may be attributed to the fact that the enamel outer surface was only minimally removed during specimen preparation. In effect, it has already been demonstrated that microhardness of enamel varies with depth (18).…”

Section: Discussioncontrasting

confidence: 54%

Viability of using enamel and dentin from bovine origin as a substitute for human counterparts in an intraoral erosion model

et al. 2010

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This study ascertained whether under dental erosion models that closely mimics the real-life situation enamel and root dentin from bovine origin would be reliable substitutes for human counterparts. Through a 2x2 crossover design, in a first trial, 14 volunteers wore a palatal device containing slabs of bovine and human enamel. Half of the participants ingested (4x daily, for 10 days) orange juice first, crossing over to mineral water, while the remainder received the reverse sequence. In a second trial, volunteers wore devices with slabs of bovine and human root dentin. Except for the duration of each intraoral phase, which lasted 2 rather 10 days, the experiment with root dentin run exactly as for enamel. Dental substrates were analyzed for surface microhardness. Two-way ANOVAs (α=0.05) indicated no difference between the microhardness values recorded for human and bovine enamel (p=0.1350), but bovine root dentin had lower microhardness compared to its human counterpart (p=0.0432). While bovine enamel can reliably substitute its human counterpart in in situ dental erosion models, bovine root dentin does not seem to be a viable alternative to the corresponding human tissue.

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Section: Discussioncontrasting

confidence: 54%

Viability of using enamel and dentin from bovine origin as a substitute for human counterparts in an intraoral erosion model

et al. 2010

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“…% min.) 17 and the area of mineral loss (∆Z) for each treatment was calculated by numerical integration using the trapezoidal rule.…”

Section: Surface Hardness Analysismentioning

confidence: 99%

Effect of different frequencies of fluoride dentifrice and mouthrinse administration: an in situ study

et al. 2010

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The effect of a combination of topical fluoridation methods for inhibition of enamel demineralization in the face of a cariogenic challenge has not been clearly established. This in situ crossover study aimed to assess whether the addition of daily use of fluoride mouthrinse (FR) to that of fluoride dentifrice (FD) is equivalent to increasing the frequency of FD application in terms of the effect on enamel demineralization and fluoride content. Over 3 phases of 14 days each, 12 volunteers wore appliances containing enamel blocks exposed to a 20% sucrose solution 8 times/day. During each phase the blocks underwent one of the following treatments: 2x/day FD, 2x/day FD + 1x/day FR, and 3x/day FD. The blocks were assessed for hardness and fluoride content. Three x/day FD did not differ from 2x/day + 1x/day FR, however it enhanced demineralization protection when compared to 2x/day FD. All treatments produced an increase in enamel fluoride content compared to no treatment (sound blocks) (p < 0.05), but the differences between them were not significant. The results of this study suggest that the daily use of fluoride mouthrinse combined with that of fluoride dentifrice has similar effects on enamel demineralization and fluoride content when compared to increasing the frequency of fluoride dentifrice use.

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“…The amount of iodide recovered in the discs is determined and provides information about the pore volume of the enamel. It was shown that (IPT) measurements are closely related to the pore [26] showed that exposure to acidic drinks leads to an increase in IP which was significantly associated with the acidity, pH, and min-eral contents of the drinks. In contrast to the aforementioned study, Lussi et al [28] [26] found a correlation between IP and microhardness data for enamel samples immersed in acidic beverages for a period of 20 min.…”

Section: Iodide Permeability Testmentioning

confidence: 99%

“…Nevertheless, microhardness measurements such as the Knoop procedure allow discriminating different erosive potentials of various substances on dental hard tissue, even after short exposures (3 min) to acidic agents [27] [25]. In other studies, immersion periods of at least 20 min were chosen to investigate the impact on surface hard-ness [28] [29] [30] [23,26,27]. By means of the indentations on enamel surfaces detection of enamel abrasion is also possible by calculating the depth of the indentations.…”

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confidence: 99%

Methods for Assessment of Dental Erosion

Attin¹

2006

Monographs in Oral Science

122

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Various assessment techniques have been applied to evaluate the loss of dental hard tissue and the surface-softened zone in enamel induced by erosive challenges. In this chapter, the most frequently adopted techniques for analyzing the erosively altered dental hard tissues are reviewed, such as profilometry, measuring microscope techniques, microradiography, scanning electron microscopy, atom force microscopy, nano-and microhardness tests and iodide permeability test. Moreover, methods for chemical analysis of minerals dissolved from dental hard tissue are discussed. It becomes evident that the complex nature of erosive mineral loss and dissolution might not be comprehended by a single technique, but needs application of different approaches for full understanding. Chapter 10Lussi A (ed): Dental Erosion. Monogr Oral Sci. Basel, Karger, 2006, vol 20, pp 152-172 Methods for Assessment of Dental Erosion Thomas Attin, Florian Just WegehauptCenter for Dental Medicine, Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Zürich, Switzerland AbstractVarious assessment techniques have been applied to evaluate the loss of dental hard tissue and the surface-softened zone in enamel induced by erosive challenges. In this chapter, the most frequently adopted techniques for analyzing the erosively altered dental hard tissues are reviewed, such as profilometry, microradiography, scanning electron microscopy, atom force microscopy, nano-and microhardness tests and iodide permeability test. Moreover, methods for chemical analysis of minerals dissolved from dental hard tissue are discussed. It becomes evident that the complex nature of erosive mineral loss and dissolution might not be comprehended by a single technique, but needs application of different approaches for full understanding. Copyright © 2006 S. Karger AG, Basel Acid attack leads to an irreversible loss of the outermost enamel and dentin layers and to partial demineralization (softening) of the tooth surface. In enamel, the thickness of the softened layer is estimated to be 2-5 tJm [1,2] [1, 2]. The softened eroded tooth surface is highly susceptible to abrasive wear, and mechanical impacts such as toothbrushing can easily remove the superficially demineralized dental hard tissue [3][4][5] [3][4][5]. For simulating intra-oral erosion as closely as possible, it is desirable to assess the erosive effects on native tooth surfaces. Most of the methods described below need polished surfaces for precise assessment of the erosively induced defects or for creating reference surfaces, which means that the natural, often fluoridated surface of the tooth has to be removed. However, it should be considered that in the case of intra-oral erosion the outermost surface layers are also continuously removed by the acid attack, so that a 'polished' surface is Attin 2 cre-ated. When monitoring of erosive surface alterations within a period of time is performed, it could become necessary to fix a specimen in the measuring device i...

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Comparison of Artificial Caries-Like Lesions by Quantitative Microradiography and Microhardness Profiles

Cited by 443 publications

References 6 publications

Viability of using enamel and dentin from bovine origin as a substitute for human counterparts in an intraoral erosion model

Viability of using enamel and dentin from bovine origin as a substitute for human counterparts in an intraoral erosion model

Effect of different frequencies of fluoride dentifrice and mouthrinse administration: an in situ study

Methods for Assessment of Dental Erosion

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