Document Detail

Fluoride uptake and acid resistance of enamel irradiated with Er:YAG laser.
MedLine Citation:
PMID:  17899311     Owner:  NLM     Status:  MEDLINE    
This study evaluated the resistance to demineralization and fluoride incorporation of enamel irradiated with Er:YAG. A total of 110 bovine teeth were selected and divided into eight groups: unlased, 37% phosphoric acid, and samples irradiated with the Er:YAG laser at several fluences (31.84 J/cm(2), 25.47 J/cm(2), 19.10 J/cm(2), 2.08 J/cm(2), 1.8 J/cm(2), and 0.9 J/cm(2)). The application of acidulated phosphate fluoride was performed after treatments. All samples were immersed in 2 ml of 2.0 M acetic-acetate acid solution at pH 4.5 for 8 h, and fluoride, calcium, and phosphorus ions dissolved were analyzed by atomic absorption spectrometry and spectrophotometry. The phosphoric acid and 31.84 J/cm(2) groups presented the lowest dissolution of calcium and phosphorus ions. Higher fluoride incorporation was observed on 1.8 J/cm(2) and 0.9 J/cm(2) groups. Based on these results, Er:YAG laser was able to decrease acid dissolution and increase fluoride uptake and can be a promissory alternative for preventive dentistry.
Flávia M Bevilácqua; Denise Maria Zezell; Romeu Magnani; Patricia A da Ana; Carlos de Paula Eduardo
Publication Detail:
Type:  Journal Article     Date:  2007-09-26
Journal Detail:
Title:  Lasers in medical science     Volume:  23     ISSN:  0268-8921     ISO Abbreviation:  Lasers Med Sci     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-03-19     Completed Date:  2008-06-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8611515     Medline TA:  Lasers Med Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  141-7     Citation Subset:  IM    
Laboratório Especial de Laser em Odontologia (LELO), Faculdade de Odontologia, Universidade de São Paulo, São Paulo, Brazil.
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MeSH Terms
Dental Caries / prevention & control*
Dental Caries Activity Tests
Dental Caries Susceptibility
Dental Enamel / radiation effects*
Dental Enamel Solubility
Fluorides / metabolism*
Laser Therapy, Low-Level / instrumentation*
Microscopy, Electron, Scanning
Pilot Projects
Spectrophotometry / instrumentation
Tooth Demineralization
Reg. No./Substance:

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