Item type:Thesis, Open Access

Zur Sensitivität und Spezifität der Kariesdiagnostik digitaler intraoraler Röntgensysteme in Relation zum nicht entkalkten Zahn-Hartschnitt als Goldstandard

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Date

2007-08-08

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Publisher

Philipps-Universität Marburg
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Abstract

Aim of our study was to determine sensitivity and specificity of three digital intraoral x-ray systems referred to histological tooth hardcut as the golden standard. Material & methods: Using Digora® (Gendex Co.), Sidexis® (Sirona Co.) and Vistascan® (Dürr Co.) of 29 extracted human teeth x-ray pictures were made. Those pictures were analysed by 10 examiners using a five-point-scale. Thereafter all teeth were embedded in polyester pour-resin GTS (Voss Chemie Co.) and cut into about 200μm thick slices using a diamond sawband (Exakt Apparatebau, Norderstedt). Results: Sensitivity and specificity were determined under two options. Calculation variation 1 showed grade 1 as healthy and grades 2, 3, 4 and 5 as diseased. Calculation variation 2 showed grades 1, 2 and 3 as healthy and grades 4 and 5 as diseased. Best diagnostic results according to sensitivity and specificity achieved Sidexis®-x-ray system followed by Digora® system. Lower results achieved Vistascan®-x-ray system. An increased number of wrong negative findings showed that the extension of decayed lesion appeared to be smaller on x-ray than on hardcut specimen. With high probability a nondecayed tooth gets recognized as such. More difficult is to diagnose caries near the pulp (C5). Probability to diagnose correctly a caries transitioning from enamel to dentin is with 6,4% of all C3-diagnoses very low. Because of this x-ray caries diagnosis can only be used ad an additional method to other diagnostic procedures.

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Dates
Created: 2007Issued: 2007-08-08Updated: 2011-08-10
DOI
https://doi.org/10.17192/z2007.0433
Faculty
Medizin
Publisher
Philipps-Universität Marburg
Language
ger
Data types
DoctoralThesis
Keywords
HardcutSensitivityApproximal cariousSpecificityRadiological
DFG-subjects
SpezifitätSensitivitätApproximalkariesRöntgenHistologie
DDC-Numbers
610
License
https://rightsstatements.org/vocab/InC-NC/1.0/
URI
https://open.uni-marburg.de/handle/10.17192/z2007.0433
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Berg, Anneliese Ursula Anja: Zur Sensitivität und Spezifität der Kariesdiagnostik digitaler intraoraler Röntgensysteme in Relation zum nicht entkalkten Zahn-Hartschnitt als Goldstandard. : Philipps-Universität Marburg 2007-08-08. DOI: https://doi.org/10.17192/z2007.0433.

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