Fluorescent microstructure of mineralized dental tissues

Foreman, P. C.

doi:10.1111/j.1365-2591.1988.tb01007.x

Cited by 14 publications

(6 citation statements)

References 15 publications

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“…Figure 3 shows the fluorescent images and XRD spectra of sound enamel and the demineralized enamel. For sound enamel, continuous and strong fluorescence can be observed because of the high mineral content and the uniform molecular environment of the chromophore (see Figure 3A) [21, 22] . Only a few weak reflections can be seen in the XRD pattern due to the presence of a smear layer resulted from the grinding process with the silicon-carbide paper (see Figure 3B).…”

Section: Resultsmentioning

confidence: 99%

Efficacy of amelogenin-chitosan hydrogel in biomimetic repair of human enamel in pH-cycling systems

Ruan

Liberman

Bapat

et al. 2015

JBEI

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Amelogenin-chitosan (CS-AMEL) hydrogel has shown great potential for the prevention, restoration, and treatment of defective enamel. As a step prior to clinical trials, this study aimed to examine the efficacy of CS-AMEL hydrogel in biomimetic repair of human enamel with erosive or caries-like lesions in pH-cycling systems. Two models for enamel defects, erosion and early caries, were addressed in this study. Two pH-cycling systems were designed to simulate the daily cariogenic challenge as well as the nocturnal pH conditions in the oral cavity. After pH cycling and treatment with CS-AMEL hydrogel, a synthetic layer composed of oriented apatite crystals was formed on the eroded enamel surface. CS-AMEL repaired the artificial incipient caries by re-growing oriented crystals and reducing the depth of the lesions by up to 70% in the pH-cycling systems. The results clearly demonstrate that the CS-AMEL hydrogel is effective at the restoration of erosive and carious lesions under pH-cycling conditions.

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Section: Resultsmentioning

confidence: 99%

Efficacy of amelogenin-chitosan hydrogel in biomimetic repair of human enamel in pH-cycling systems

Ruan

Liberman

Bapat

et al. 2015

JBEI

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“…On the other hand, Spitzer and Bosch found that dental tissues have different optical behavior depending on the wavelength emitted and that hydroxyapatite would not play an important role in this phenomenon . Since then, several luminescent species have been proposed in the literature as responsible for dental fluorescence, namely, pyrimidine, tryptophan, tyrosine, hydroxypyridine, pyridinoline, dityrosine, and a complex of hydroxyapatite and pyridinoline . These studies reinforce the hypothesis that the phenomenon of dental fluorescence is probably a result of the action of multiple agents, thus making their optical behavior even more difficult to predict …”

Section: Concepts Historical Perspective and Terminologymentioning

confidence: 99%

“…[22][23][24] It is a consensus that the fluorescence of the dentin is caused by a large amount of organic material, but the nature of this autofluorescence is still controversial. 17,25,26 According to studies, the fluorometric data obtained from basic hydrolysates of dentin proteins show an optical behavior similar to the one of the molecular amino acids tryptophan, tyrosine, and hydroxypyridine. 18,25,27 However, according to Fukushima et al, the fluorescence of dentin is caused by the presence of a hydroxyapatite-pyridinoline complex.…”

Section: Concepts Historical Perspective and Terminologymentioning

confidence: 99%

“…17,25,26 According to studies, the fluorometric data obtained from basic hydrolysates of dentin proteins show an optical behavior similar to the one of the molecular amino acids tryptophan, tyrosine, and hydroxypyridine. 18,25,27 However, according to Fukushima et al, the fluorescence of dentin is caused by the presence of a hydroxyapatite-pyridinoline complex. For these authors, there is a spectral inconsistency between the dentin and the tryptophan, tyrosine and hydroxypyridine molecules, because such molecules have emission peaks of 350 to 400 nm, respectively, whereas the dentin presents peaks of 440 nm.…”

Section: Concepts Historical Perspective and Terminologymentioning

confidence: 99%

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Fluorescence of natural teeth and restorative materials, methods for analysis and quantification: A literature review

Volpato

Pereira

Silva

2018

J Esthet Restor Dent

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Objective This review integrates published scientific information about the fluorescence of natural teeth, dental resins and ceramics, and the main methods of analysis and quantification presented in the literature. Overview Fluorescence is an emission of light (photons) by a substance that has absorbed light of higher energy. In natural teeth, it is more intense in the dentin than in the enamel and presents a bluish‐white color. In dental resins and ceramics, fluorescence is obtained by the incorporation of materials that contain rare‐earth luminescence centers (more precisely lanthanide luminescence centers), which allows these artificial materials to simulate natural teeth in a more beautiful and vital‐looking way. However, the lack of knowledge about this optical phenomenon on the part of professionals indicates the need for more scientific studies and dissemination on this topic. Conclusions Aesthetic materials have variable spectral compositions and fluorescence intensities, which are not always compatible with natural teeth. The fluorescence of teeth and restorative materials can be influenced by several factors, such as aging, temperature, and bleaching. Several devices for fluorescence evaluation and quantification are used in studies under different methodologies, but the small number of studies on the subject make it difficult to compare their results. Clinical Significance Fluorescence is a fundamental optical property for aesthetic rehabilitations since its presence and intensity in the restorative materials allows achieving an aesthetic result much closer to reality. However, the fluorescent behavior of natural teeth and aesthetic restorative materials is not yet fully understood by researchers and clinicians. Greater understanding of this phenomenon will contribute to the selection, indication, and clinical use of these materials.

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“…The specificity was a problem in distinguishing between a caries lesion and developmental defects. Foreman (1988) stated that, in UV light, there is generally an inverse correlation between the intensity of fluorescence and the degree of mineralization in mineralized dental tissues, just as there is with the laser fluorescence method. Kleinberg et al (1978) presented a photographic method for labial surfaces by which only the oral cavity is exposed to ultraviolet light.…”

Section: Ultraviolet Illumination (Uv I)mentioning

confidence: 99%

Advances in Methods for Diagnosing Coronal Caries-a Review

Angmar‐Månsson

Bosh

1993

Adv Dent Res.

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Abstract-Diagnostic methods for coronal caries in common use include visual inspection, tactile examination with a probe, bite-wing radiography, and often fiber-optic-transillumination (FOTI). Early diagnosis enables small lesions to be identified so that remineralization of lesions by preventive measures can be attempted; in clinical research, it may shorten the time for clinical trials. Quantitative methods may potentially decrease interexaminer variations and facilitate the determination of small progressions or regressions. This review discusses recent advances in the development of such methods, i.e., endoscopic methods, FOTI, light-scattering, laser fluorescence, ultraviolet illumination, penetration of dyes, iodide penetration, electrical resistance, ultrasonic imaging, and improved radiographic imaging techniques. Diagnosis of occlusal surfaces gains from the use of the electrical resistance method (preferable when the emphasis is on finding lesions) or radiography (when the emphasis is on identifying sound surfaces). Digitized radiography with simple contrast enhancement gives some further improvement. Quantitative methods are not yet proven to be good enough to measure small changes. Quantitative methods are not yet proven to be good enough to measure small changes. For occlusal surfaces, the electrical resistance method may be, but this has to be confirmed. For approximal surfaces, digitized radiography and fluorescent dye penetration have to be tested for clinical feasibility. It is concluded that there are many methods in development, but all require clinical testing, and many still need development before clinical use.

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Fluorescent microstructure of mineralized dental tissues

Cited by 14 publications

References 15 publications

Efficacy of amelogenin-chitosan hydrogel in biomimetic repair of human enamel in pH-cycling systems

Efficacy of amelogenin-chitosan hydrogel in biomimetic repair of human enamel in pH-cycling systems

Fluorescence of natural teeth and restorative materials, methods for analysis and quantification: A literature review

Advances in Methods for Diagnosing Coronal Caries-a Review

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