Phosphorescence of calcified tissues

Hoerman, Kirk C.; Mancewicz, Sandra A.

doi:10.1016/0003-9969(64)90016-0

Cited by 21 publications

(17 citation statements)

References 14 publications

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“…2 As to the phosphorescence of tooth and hard tissue, phosphorescence intensities and lifetimes of calcified tissues and other biologic materials were tested. 6 As results, human dentine and bone displayed nearly equal phosphorescence intensities, whereas enamel was ∼l∕3 less phosphorescent. For dentine, bone, and enamel, the experimental lifetimes of phosphorescence were 31 AE 2 s. It has been also argued that phosphorescence of calcified tissues apparently stems principally from the organic moiety.…”

Section: Photoluminescence Of Human Teethmentioning

confidence: 74%

“…21 As to the endogenous fluorophores in enamel and dentine, early investigations of teeth using UV excitation indicated that the light emission was from the organic matrix embedded in the inorganic calcium apatite matrix. 2,6,[22][23][24] It was also reported that the compounds causing fluorescence in human teeth were mostly organic in nature, possibly proteins, as well as the inorganic matrix. [25][26][27] It was confirmed that fluorometric data obtained from basic hydrolysates of dentine protein were identical to those of tryptophan and tyrosine.…”

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confidence: 99%

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Fluorescence properties of human teeth and dental calculus for clinical applications

Lee¹

2015

J. Biomed. Opt

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Abstract. Fluorescent emission of human teeth and dental calculus is important for the esthetic rehabilitation of teeth, diagnosis of dental caries, and detection of dental calculus. The purposes of this review were to summarize the fluorescence and phosphorescence of human teeth by ambient ultraviolet (UV) light, to investigate the clinically relevant fluorescence measurement methods in dentistry, and to review the fluorescence of teeth and dental calculus by specific wavelength light. Dentine was three times more phosphorescent than enamel. When exposed to light sources containing UV components, the fluorescence of human teeth gives them the quality of vitality, and fluorescent emission with a peak of 440 nm is observed. Esthetic restorative materials should have fluorescence properties similar to those of natural teeth. Based on the fluorescence of teeth and restorative materials as determined with a spectrophotometer, a fluorescence parameter was defined. As to the fluorescence spectra by a specific wavelength, varied wavelengths were investigated for clinical applications, and several methods for the diagnosis of dental caries and the detection of dental calculus were developed. Since fluorescent properties of dental hard tissues have been used and would be expanded in diverse fields of clinical practice, these properties should be investigated further, embracing newly developed optical techniques.

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Section: Photoluminescence Of Human Teethmentioning

confidence: 74%

mentioning

confidence: 99%

Fluorescence properties of human teeth and dental calculus for clinical applications

Lee¹

2015

J. Biomed. Opt

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“…Both enamel and dentin are fluorescent tissues, but enamel produces only a quite weak fluorescence because it contains a small amount of organic material . Generally, teeth display a bluish‐white color under UV light . The fluorescence spectrum of natural enamel exhibits maximum luminescence peaks at 450 nm, while the dentin shows peaks at 440 nm …”

Section: Concepts Historical Perspective and Terminologymentioning

confidence: 99%

“…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 . 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 . 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%

“…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%

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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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