In vitro detection and quantification of enamel and root caries using infrared photothermal radiometry and modulated luminescence.

Abstract:

:Artificially created demineralized and remineralized carious lesions on the root and enamel of human teeth were examined by photothermal radiometry (PTR) and modulated luminescence (LUM). Fourteen extracted human teeth were used and a lesion was created on a 1 mmx4 mm rectangular window, spanning root to enamel, using a lactic acid-based acidified gel to demineralize the tooth surface. The lesion was then exposed to a remineralization solution. Each sample was examined with PTR/LUM on the root and enamel before and after treatment at times from 1 to 10 (5 on root) days of demineralization and 2 to 10 days of remineralization. Ten-day (5 on root) demineralized samples were remineralized. After completing all the experiments, transverse microradiography (TMR) analysis was performed to compare and correlate the PTR/LUM signals to the depth of lesions and mineral losses. The PTR and LUM amplitudes and phases showed gradual and consistent changes with treatment time. In this study, TMR showed good correlation coefficients with PTR and LUM. It was also found that the length of the treatment time did not correlate very well to any technique, PTR/LUM or TMR, which implies a significant degree of inhomogeneity of the demireralization and remineralization rates in each and every tooth.

journal_name

J Biomed Opt

authors

Jeon RJ,Hellen A,Matvienko A,Mandelis A,Abrams SH,Amaechi BT

doi

10.1117/1.2942374

subject

Has Abstract

pub_date

2008-05-01 00:00:00

pages

034025

issue

3

eissn

1083-3668

issn

1560-2281

journal_volume

13

pub_type

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