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Advanced transversal microradiography enables single section demineralization experiments


Becker, Klaus; Engler, Katja; Trakiniené, Giedrė; Attin, Thomas; Attin, Rengin (2020). Advanced transversal microradiography enables single section demineralization experiments. Measurement, 149:106999.

Abstract

Transversal Microradiography (TMR) is a method for quantifying the mineral density in enamel carious lesions. In the traditional procedure, X-ray images of 100 µm thin tooth sections are compared, whereby the grinding of the samples can produce undefined artefacts at the demineralized areas. In this study, the replacement of the usual aluminium step wedge by a continuous hydroxyapatite (HAp) wedge with an extended measuring range was validated, whereby, the mineral density of sections with >500 µm thickness could be quantified reproducibly. This enabled experiments with the single section technique: the sections were made from sound teeth and X-rayed immediately. After each experimental phase, a further image was taken, so that the changes in the mineral density of an object could be normalised to its baseline image at the end of the experiment. The results of the analysis with the traditional reference area differed significantly from the single-section analysis (p < 0.03; n = 8).

Abstract

Transversal Microradiography (TMR) is a method for quantifying the mineral density in enamel carious lesions. In the traditional procedure, X-ray images of 100 µm thin tooth sections are compared, whereby the grinding of the samples can produce undefined artefacts at the demineralized areas. In this study, the replacement of the usual aluminium step wedge by a continuous hydroxyapatite (HAp) wedge with an extended measuring range was validated, whereby, the mineral density of sections with >500 µm thickness could be quantified reproducibly. This enabled experiments with the single section technique: the sections were made from sound teeth and X-rayed immediately. After each experimental phase, a further image was taken, so that the changes in the mineral density of an object could be normalised to its baseline image at the end of the experiment. The results of the analysis with the traditional reference area differed significantly from the single-section analysis (p < 0.03; n = 8).

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic of Conservative and Preventive Dentistry
04 Faculty of Medicine > Center for Dental Medicine > Clinic for Orthodontics and Pediatric Dentistry
Dewey Decimal Classification:610 Medicine & health
Scopus Subject Areas:Physical Sciences > Instrumentation
Physical Sciences > Electrical and Electronic Engineering
Uncontrolled Keywords:Instrumentation, Electrical and Electronic Engineering, Applied Mathematics, Condensed Matter Physics
Language:English
Date:1 January 2020
Deposited On:30 Jan 2020 11:48
Last Modified:22 Apr 2024 01:47
Publisher:Elsevier
ISSN:0263-2241
OA Status:Closed
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.measurement.2019.106999