Attenuation of near-ultraviolet, visible and near-infrared light in sound and carious human enamel and dentin.
Caries detection
Caries zones
Dentin caries
Enamel caries
Tertiary dentin
Transillumination
Journal
Clinical oral investigations
ISSN: 1436-3771
Titre abrégé: Clin Oral Investig
Pays: Germany
ID NLM: 9707115
Informations de publication
Date de publication:
Sep 2022
Sep 2022
Historique:
received:
03
03
2022
accepted:
09
05
2022
pubmed:
20
5
2022
medline:
17
9
2022
entrez:
19
5
2022
Statut:
ppublish
Résumé
This in vitro study aimed to investigate the optical attenuation of light at 405, 660 and 780 nm sent through sound and carious human enamel and dentin, including respective individual caries zones, as well as microscopically sound-appearing tissue close to a carious lesion. Collimated light transmission through sections of 1000-125-µm thickness was measured and used to calculate the attenuation coefficient (AC). The data were statistically analysed with a MANOVA and Tukey's HSD. Precise definition of measurement points enabled separate analysis within the microstructure of lesions: the outer and inner halves of enamel (D1, D2), the translucent zone (TZ) within dentin lesions and its adjacent layers, the enamel side of the translucent zone (ESTZ) and the pulpal side of the translucent zone (PSTZ). The TZ could be distinguished from its adjacent layers and from caries-free dentin at 125 µm. Sound-appearing dentin close to caries lesions significantly differed from caries-free dentin at 125 µm. While sound and carious enamel exhibited a significant difference (p < 0.05), this result was not found for D1 and D2 enamel lesions (p > 0.05). At 405 nm, no difference was found between sound and carious dentin (p > 0.05). Light optical means enable the distinction between sound and carious tissue and to identify the microstructure of dentin caries partially as well as the presence of tertiary dentin formation. Information on sample thickness is indispensable when interpreting the AC. Non-ionising light sources may be suitable to detect lesion progression and tertiary dentin.
Identifiants
pubmed: 35588022
doi: 10.1007/s00784-022-04541-7
pii: 10.1007/s00784-022-04541-7
pmc: PMC9474553
doi:
Types de publication
Journal Article
Langues
eng
Pagination
5847-5855Informations de copyright
© 2022. The Author(s).
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