Document Detail

Effects of Toothbrushing with Fluoride Abrasive and Whitening Dentifrices on Both Unbleached and Bleached Human Enamel Surface in Terms of Roughness and Hardness: An in vitro Study.
MedLine Citation:
PMID:  23250157     Owner:  NLM     Status:  In-Data-Review    
Aim: The aim of this in vitro study was to evaluate the surface roughness and hardness of both unbleached and bleached (opalescence; 10% carbamide peroxide) human enamel brushed with water (without dentifrice), fluoride abrasive dentifrice (Colgate Total) and whitening dentifrice (Natural White). Materials and methods: Human enamel samples were obtained from third molars and randomly divided into five groups (n = 8): G1-Control (brushed with water without dentifrice), G2-Colgate Total (fluoride abrasive dentifrice), G3-Natural White (whitening dentifrice), G4-Opalescence (10% carbamide peroxide) and then brushed with Colgate Total, G5- Opalescence (10% carbamide peroxide) and then brushed with Natural White. Bleaching regimen was applied according to manufacturers' instructions. The brushing process was performed with a modified Nyffenegger's brushing machine. Surface roughness was analyzed with a profilometer. Microhardness testing was performed with a Brinell hardness tester. Results: Results were statistically analyzed by Kruskal-Wallis, one-way ANOVA analysis and Mann-Whitney U, Wilcoxon matched-pairs signed-ranks tests. There were significant differences in surface roughness values for all groups, which showed an increase in roughness (p < 0.05). When the bleaching treatment combined with brushing with whitening dentifrice was performed (G5), there was a significant decrease in hardness values (p < 0.05). The other groups (G1, G2, G3, G4) showed no significant hardness differences (p > 0.05). Conclusion: It was concluded that toothbrushing procedures increased the enamel surface roughness, and that bleaching regimen performed with cleaning treatment, through brushing with whitening dentifrice decreased hardness values. Clinical significance: When applied together, bleaching and cleaning treatments may alter the enamel surface roughness and hardness values. Keywords: Toothbrushing, Dentifrices, Roughness, Hardness, Bleaching. How to cite this article: Bolay S, Cakir FY, Gurgan S. Effects of Toothbrushing with Fluoride Abrasive and Whitening Dentifrices on Both Unbleached and Bleached Human Enamel Surface in Terms of Roughness and Hardness: An in vitro Study. J Contemp Dent Pract 2012;13(5):584-589. Source of support: Nil Conflict of interest: None declared.
Sukran Bolay; Filiz Yalcin Cakir; Sevil Gurgan
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Publication Detail:
Type:  Journal Article     Date:  2012-09-01
Journal Detail:
Title:  The journal of contemporary dental practice     Volume:  13     ISSN:  1526-3711     ISO Abbreviation:  J Contemp Dent Pract     Publication Date:  2012  
Date Detail:
Created Date:  2012-12-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101090552     Medline TA:  J Contemp Dent Pract     Country:  India    
Other Details:
Languages:  eng     Pagination:  584-9     Citation Subset:  D; IM    
Professor, Department of Restorative Dentistry, School of Dentistry Hacettepe University, Ankara, Turkey.
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