Document Detail


Laser-induced fluorescence from sound and carious tooth substance: spectroscopic studies.
MedLine Citation:
PMID:  3859944     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Fluorescence spectra of dentine and enamel illuminated with laser light of wavelengths of 337, 488, 515 and 633 nm respectively were recorded. The fluorescence obtained by illumination with UV laser light at 337 nm had a peak at about 400 nm in dentine as well as enamel. Compared to intact enamel the fluorescence from enamel with initial carious lesions was of lower intensity and had a slight red shift. No fluorescence within the visible range was obtained by illumination with a low power He-Ne laser at 633 nm. Illumination at 488 nm produced fluorescence with a peak at about 540 nm in dentine as well as enamel. The difference in the intensity of fluorescence between sound and carious enamel was generally greater at this wavelength than at any of the others tried, and the red shift from the carious enamel was also more pronounced. Illumination at 515 nm produced fluorescence of similar wavelengths but with much less difference between intact and carious enamel. It was concluded that illumination at 488 nm was the most suitable wavelength of those investigated for the detection of initial carious lesions by the fluorescence technique.
Authors:
F Sundström; K Fredriksson; S Montán; U Hafström-Björkman; J Ström
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Swedish dental journal     Volume:  9     ISSN:  0347-9994     ISO Abbreviation:  Swed Dent J     Publication Date:  1985  
Date Detail:
Created Date:  1985-08-21     Completed Date:  1985-08-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7706129     Medline TA:  Swed Dent J     Country:  SWEDEN    
Other Details:
Languages:  eng     Pagination:  71-80     Citation Subset:  D; IM    
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MeSH Terms
Descriptor/Qualifier:
Dental Caries / diagnosis,  physiopathology*
Dental Enamel / physiology
Dentin / physiology
Fluorescence*
Humans
Lasers / diagnostic use*
Spectrometry, Fluorescence
Tooth / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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