Fluorescence in dissolved fractions of human enamel

Hafström-Björkman, U; Sundström, F; Bosch, J.J. ten

doi:10.3109/00016359109005897

Cited by 30 publications

(5 citation statements)

References 11 publications

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“…The inorganic components could be responsible for AF with peaks at 460 nm and 560 nm under single-photon excitation at 375 nm [29]. The two-photon excited AF spectra of enamel obtained herein include no peak around 560 nm, and reveal different spectral characteristics from the corresponding single-photon excited AF spectra [29,30]. The difference between the single- and two-photon fluorescence of enamel may be explained by the different excitation mechanism involved.…”

Section: Resultsmentioning

confidence: 96%

“…Site-specific spectral profiles from enamel also do not vary significantly. Unlike AF in soft tissue, the AF in dental tissue is attributable to organic and inorganic components [4,29]. In Fig.…”

Section: Resultsmentioning

confidence: 99%

“…However, the origin of AF in enamel remains unclear [24]. The inorganic components could be responsible for AF with peaks at 460 nm and 560 nm under single-photon excitation at 375 nm [29]. The two-photon excited AF spectra of enamel obtained herein include no peak around 560 nm, and reveal different spectral characteristics from the corresponding single-photon excited AF spectra [29,30].…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, dentin consists of about 70% inorganic material and 30% organic material and water, major organic constituent is collagen [1,4]. The origins of autofluorescence from dental tissue may be quite diverse, and include both organic and inorganic components [4,29]. …”

Section: Resultsmentioning

confidence: 99%

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Imaging carious dental tissues with multiphoton fluorescence lifetime imaging microscopy

Lin¹,

Lyu²,

Hsu

et al. 2010

Biomed. Opt. Express

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In this study, multiphoton excitation was utilized to image normal and carious dental tissues noninvasively. Unique structures in dental tissues were identified using the available multimodality (second harmonic, autofluorescence, and fluorescence lifetime analysis) without labeling. The collagen in dentin exhibits a strong second harmonic response. Both dentin and enamel emit strong autofluorescence that reveals in detail morphological features (such as dentinal tubules and enamel rods) and, despite their very similar spectral profiles, can be differentiated by lifetime analysis. Specifically, the carious dental tissue exhibits a greatly reduced autofluorescence lifetime, which result is consistent with the degree of demineralization, determined by micro-computed tomography. Our findings suggest that two-photon excited fluorescence lifetime imaging may be a promising tool for diagnosing and monitoring dental caries.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Imaging carious dental tissues with multiphoton fluorescence lifetime imaging microscopy

Lin¹,

Lyu²,

Hsu

et al. 2010

Biomed. Opt. Express

View full text Add to dashboard Cite

show abstract

“…Natural teeth have a bluish fluorescence under ultraviolet (UV) light, which is responsible for the whiter and lighter appearance of the teeth under daylight (Björkman et al, 1991 ; Spitzer & Bosch Ten, 1976 ). The fluorescence of natural teeth results in distribution of absorbed energy in higher wavelengths such that the teeth are converted to a light source.…”

Section: Introductionmentioning

confidence: 99%

Effect of glazing and polishing on opalescence and fluorescence of dental ceramics

Hashemikamangar

Nahavandi

Daryadar

et al. 2022

Clinical & Exp Dental Res

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Objective: Tooth enamel has opalescence and fluorescence, which should be mimicked by esthetic dental restorations. The purpose of this study was to compare the effects of glazing and polishing on the opalescence and fluorescence of dental ceramics.Materials and Methods: Twenty-four discs were fabricated of feldspathic, IPS e.max, zirconia, and Enamic ceramics with 10 mm diameter and 0.5 and 1 mm thicknesses (n = 12). Of the discs fabricated with 0.5 and 1 mm thicknesses, half of them were glazed and the remaining half were polished (n = 6). Opalescence was calculated as the difference in yellow-blue (CIE Δb*) and red-green (CIE Δa*) color axes between the transmitted and reflected colors. The fluorescence of specimens was measured by a novel technique. Data were analyzed using two-way analysis of variance at a 0.05 level of significance.Results: In all groups (except for the Enamic ceramic), the mean opalescence of polished specimens (e.max = 2.704, feldspathic = 1.67, zirconia = 3.143) was higher than that of glazed specimens (e.max = 2.163, feldspathic = 1.016, zirconia = 2.690).The mean opalescence of glazed Enamic specimens (2.140) was higher than that of polished specimens (1.308). The fluorescence of glazed and polished specimens was not significantly different. Conclusion:Surface treatment (glazing/polishing) affects the opalescence, but not the fluorescence of dental ceramics evaluated in this study.

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Assessment of Optical Properties

2021

Manual of Laboratory Testing Methods for Dental Restorative Materials

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Fluorescence in dissolved fractions of human enamel

Cited by 30 publications

References 11 publications

Imaging carious dental tissues with multiphoton fluorescence lifetime imaging microscopy

Imaging carious dental tissues with multiphoton fluorescence lifetime imaging microscopy

Effect of glazing and polishing on opalescence and fluorescence of dental ceramics

Assessment of Optical Properties

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