Document Detail

Comparison of quantitative light-induced fluorescence (QLF) and digital imaging applied for the detection and quantification of staining and stain removal on teeth.
MedLine Citation:
PMID:  16337328     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: This study compares the use of QLF with digital imaging in the detection and quantification of the development and removal of stain on teeth. METHODS: Two experimental phases, tooth staining and tooth whitening, conducted in vitro on labial 12 mm(2) enamel windows made on ten extracted bovine teeth, developed stains in 6-min cycles (2 min in each solution) using artificial saliva, chlorhexidine and tea solutions and removed them using sodium perborate monohydrate in 2-min cycle monitored at the end of each cycle with QLF (Inspektor Research Systems, NL) and digital photography (Fuji, Japan). The stain values were quantified as DeltaQ derived from QLF and DeltaE from digital imaging. This was observed by the two methods correlated with Pearson correlation coefficient (r). Regression equations (R(2)) were also obtained. RESULTS: For both staining and stain removal there was a statistically significant (p<0.01) reverse correlation between DeltaQ values for QLF (r=-0.924, R(2)=85.4%) and DeltaE values for digital imaging (r=-0.994, R(2)=98.8%), respectively. CONCLUSION: QLF showed a high correlation with digital imaging as a technique for detecting and monitoring tooth stains and tooth whitening in vitro. The potential for QLF with further development as a tool for monitoring staining and whitening of teeth may be possible in vivo in addition to the diagnostic ability for caries detection.
A A Adeyemi; F D Jarad; N Pender; S M Higham
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2005-12-06
Journal Detail:
Title:  Journal of dentistry     Volume:  34     ISSN:  0300-5712     ISO Abbreviation:  J Dent     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-07-31     Completed Date:  2006-12-05     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0354422     Medline TA:  J Dent     Country:  England    
Other Details:
Languages:  eng     Pagination:  460-6     Citation Subset:  D; IM    
The University of Liverpool, Department of Clinical Dental Sciences, Edwards Building, Daulby Street, Liverpool L69 3GN, UK. <>
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MeSH Terms
Borates / therapeutic use
Chlorhexidine / adverse effects
Dental Enamel / drug effects,  pathology
Disinfectants / adverse effects
Image Processing, Computer-Assisted / methods*
Light / diagnostic use*
Oxidants / therapeutic use
Photography, Dental / methods*
Saliva, Artificial / chemistry
Tea / adverse effects
Tooth Bleaching / methods*
Tooth Discoloration / diagnosis*,  drug therapy
Reg. No./Substance:
0/Borates; 0/Disinfectants; 0/Oxidants; 0/Saliva, Artificial; 0/Tea; 11138-47-9/sodium perborate; 55-56-1/Chlorhexidine

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

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