Document Detail

Effect of Er,Cr:YSGG Laser and Professional Fluoride Application on Enamel Demineralization and on Fluoride Retention.
MedLine Citation:
PMID:  22739669     Owner:  NLM     Status:  Publisher    
This study evaluated the effect of Er,Cr:YSGG laser irradiation and professional fluoride application on enamel demineralization and on fluoride formation and retention. In a blind in vitro study, 264 human enamel slabs were distributed into 8 groups: G1 - untreated; G2 - treated with acidulated phosphate fluoride gel (APF gel, 1.23% F) for 4 min; G3, G4 and G5 - irradiated with Er,Cr:YSGG at 2.8, 5.6 and 8.5 J/cm(2), respectively; G6, G7 and G8 - preirradiated with Er,Cr:YSGG at 2.8, 5.6 and 8.5 J/cm(2), respectively, and subjected to APF gel application. Twenty slabs of each group were submitted to a pH-cycling regimen, and enamel demineralization was evaluated in 10 slabs of each group. In the other 10 slabs, CaF(2)-like material was determined. To evaluate F formed, 10 additional slabs of each group, not subjected to the pH cycling, were submitted to analysis of CaF(2)-like material and fluorapatite, while the other 3 slabs of each group were evaluated by scanning electron microscopy. The F content was also measured in all pH-cycling solutions. Laser at 8.5 J/cm(2) and APF treatment reduced enamel demineralization compared to the control (p < 0.05), but the combination of these treatments was not more efficient than their isolated effect. A higher concentration of retained CaF(2)-like material was found in laser groups followed by APF in comparison with the APF gel treatment group. The findings suggest that laser treatment at 8.5 J/cm(2) was able to decrease hardness loss, even though no additive effect with APF was observed. In addition, laser treatment increased the formation and retention of CaF(2) on dental enamel.
P A Ana; C P M Tabchoury; J A Cury; D M Zezell
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-27
Journal Detail:
Title:  Caries research     Volume:  46     ISSN:  1421-976X     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0103374     Medline TA:  Caries Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  441-451     Citation Subset:  -    
Copyright Information:
Copyright © 2012 S. Karger AG, Basel.
Universidade Federal do ABC, UFABC, Santo André, Brazil.
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