Monitoring De- and Remineralisation of Enamel in vitro Using an Infrared Reflectance Meter

Anderson, Paul; Davis, G. R.; Ahluwalia, Meera

doi:10.1159/000262350

Cited by 7 publications

(10 citation statements)

References 9 publications

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“…The increase in scattered radiation will be at the expense of light transmitted into the enamel and light specularly reflected. The present results are therefore also consistent with earlier studies [Vaarkamp et al, 1995;Anderson et al, 1996] in which a reduction in specular reflection was observed with increased demineralization. Note that unlike the R a values, the increase in reflectivity is not linear with time, but appears to be a saturating exponential change as was reported by Anderson et al [1996] for infrared specular reflection.…”

Section: Main Experimentssupporting

confidence: 94%

Optical Profilometric Study of Changes in Surface Roughness of Enamel during in vitro Demineralization

Zhang

Anderson²,

Dowker³

et al. 2000

Caries Res

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The application of non–contact optical profilometry for non–destructive study of changes in the surface roughness of natural enamel surfaces during in vitro demineralization was investigated. Repeated measurement of profiles of the same enamel surfaces after successive demineralization episodes was achieved by a kinematic specimen mount that could be removed, then accurately repositioned. Surface roughness parameters and reflectivity of natural enamel surfaces exposed to either a demineralizing solution (test) or deionized water (control) for up to 6 days were measured at 6– to 24–hour intervals. The results prior to demineralization showed that surface roughness varies with position on the enamel surface. During demineralization there was an approximately linear increase in surface roughness for the first 70 h followed by somewhat erratic behaviour, and a saturating exponential with time increase in reflectivity for the first 70 h which subsequently remained constant. Changes in enamel surface during in vitro demineralization were also observed using scanning electron microscopy.

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Section: Main Experimentssupporting

confidence: 94%

Optical Profilometric Study of Changes in Surface Roughness of Enamel during in vitro Demineralization

Zhang

Anderson²,

Dowker³

et al. 2000

Caries Res

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“…IR reflectance measurements of 9 test and 9 control teeth were based on the method detailed by Anderson et al . [24] in a study, which showed that the IR reflectance of caries and opacity free molars decreased during demineralisation, and increased during remineralisation. In the present study, an IR reflectance meter was used to record the change in IR reflected intensity before and after pumicing and acid etching, and during exposure to the remineralising solution.…”

Section: Methodsmentioning

confidence: 99%

A quantitative study of the effect of pumicing and etching on the remineralisation of enamel opacities

Peariasamy

Anderson

Brook

2001

Int J Paed Dentistry

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“…Lastly, a method that enables nondestructive time-dependent monitoring of one and the same specimen is another example of increase of information. Replacement of destructive methods, like microhardness and histology, with non-destructive methods is common in caries research [14][15][16]. Validation then should be done against the final situation, determined either clinically or by histology [16].…”

Section: Validation Of a Methods That Is Expected To Be 'Better' Than mentioning

confidence: 99%

Characterization and Validation of Diagnostic Methods

Bosch

Angmar‐Månsson²

2000

Monographs in Oral Science

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Diagnosis is defined as the determination of disease, but not as the determination of the signs and symptoms thereof. The use of modern diagnostic methodology in the clinic is hampered by cost considerations and by the still widespread belief that, e.g. caries lesions and periodontal breakdown are irreversible processes that need to be detected and treated invasively as early as possible, their measurement thus being irrelevant. Modern instrumental and quantitative methods allow early detection and introduction of noninvasive preventive measures to control the development of the disease. Such methods are also very beneficial in clinical research as they may describe the speed of progress or regress of disease. In epidemiology, such methods reduce the classical problem of calibration of observers. Repeatability, reproducibility, accuracy and validity are defined as method-characterizing quantities, for which examples are given. To express the validity of quantitative methods compared with a quantitative gold standard, the use of scatter plots and correlation and regression methods is suggested. Validation of a dichotomous method with a dichotomous gold standard in terms of sensitivity and specificity is discussed. To validate a quantitative method with a dichotomous gold standard, the receiver operating characteristic curve is suggested, with the requirement that the cutoff value should be determined in relation to the use of the method. However, preferably a quantitative method should not be reduced to a dichotomous one by using a cutoff value, but instead all available information should be used by the diagnostician. It is argued that the use of a secondary standard instead of the accepted gold standard usually leads to inadequate results, even when the validity of the secondary standard is known. Finally, it is argued that the choice of a gold standard is a matter of reasoning and weighing of arguments and not of following a prescribed procedure.

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Monitoring De- and Remineralisation of Enamel in vitro Using an Infrared Reflectance Meter

Cited by 7 publications

References 9 publications

Optical Profilometric Study of Changes in Surface Roughness of Enamel during in vitro Demineralization

Optical Profilometric Study of Changes in Surface Roughness of Enamel during in vitro Demineralization

A quantitative study of the effect of pumicing and etching on the remineralisation of enamel opacities

Characterization and Validation of Diagnostic Methods

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