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Erschienen in: Lasers in Medical Science 9/2020

27.06.2020 | Original Article

Near-infrared transillumination with high dynamic range imaging for occlusal caries detection in vitro

verfasst von: Friederike Litzenburger, Alexander Lederer, Maximilian Kollmuß, Reinhard Hickel, Karl-Heinz Kunzelmann, Katrin Heck

Erschienen in: Lasers in Medical Science | Ausgabe 9/2020

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Abstract

The aim of this study was to assess near-infrared transillumination with high dynamic range imaging (NIRT-HDRI) for occlusal caries detection in vitro and to compare it with visual inspection using the International Caries Detection and Assessment System II (ICDAS) and digital bitewing radiography (BWR). Sixty-one extracted permanent molars with sound or occlusal carious surfaces without severe cavitation were visually assembled. Two examiners assessed twice these surfaces independently using ICDAS, BWR and NIRT-HDRI. The latter was performed with a prototype consisting of two laser sources (780 nm), a CCD sensor and subsequent processing with image analysis software. Thresholds for carious surfaces, enamel and dentin lesions were defined for all methods. Micro-computed tomography served as the reference standard. Linear weighted Kappa analysis of the methods versus the reference at the threshold carious surface, enamel and dentin lesion revealed 0.59/0.08/0.12 for ICDAS, 0.37/− 0.06/0.58 for BWR and 0.33/− 0.01/0.51 for NIRT-HDRI. Sensitivity values at the three thresholds were 0.85/0.78/0.13 for ICDAS, 0.59/0.00/0.69 for BWR and 0.98/0.33/0.78 for NIRT. Specificity values at the three thresholds were 0.70/0.40/1.00 for ICDAS, 0.9./0.96/0.90 for BWR and 0.30/0.65/0.72 for NIRT-HDRI. Reliability analysis revealed substantial agreement for BWR and NIRT and almost perfect agreement for ICDAS. NIRT exhibited a strong ability to identify occlusal dental decay in general; however, it revealed a tendency towards overestimation. Its strength was the detection of dentin caries lesions compared with ICDAS and BWR. NIRT-HDRI seems to be a suitable method to detect hidden dentin caries as a supplement to visual examination.
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Metadaten
Titel
Near-infrared transillumination with high dynamic range imaging for occlusal caries detection in vitro
verfasst von
Friederike Litzenburger
Alexander Lederer
Maximilian Kollmuß
Reinhard Hickel
Karl-Heinz Kunzelmann
Katrin Heck
Publikationsdatum
27.06.2020
Verlag
Springer London
Erschienen in
Lasers in Medical Science / Ausgabe 9/2020
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-020-03078-z