The staining effect of different mouthwashes containing nanoparticles on dental enamel

Eslami, N. and Ahrari, F. and Rajabi, O. and Zamani, R. (2015) The staining effect of different mouthwashes containing nanoparticles on dental enamel. Journal of Clinical and Experimental Dentistry, 7 (4). e457-e461.

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Background: This study aimed to evaluate the effects of several mouthwashes containing nanoparticles on discoloration of dental enamel, and compare the results with that of 0.2 chlorhexidine (CHX). Material and Methods: Sixty intact premolars were randomly assigned to six groups. A spectrophotometer was used to measure the color of the teeth (T1) according to the CIELAB system. The specimens in groups 1 to 4 were then immersed in colloidal solutions containing nanoTiO2 (Group 1), nanoZnO (Group 2), nanoAg (Group 3) and nanoCuO (Group 4). In groups 5 and 6, a 0.2 CHX mouthwash and distilled water were used as positive and negative controls, respectively. After 24 hours of immersion, color determination was repeated (T2). The third color assessment was accomplished after brushing (T3). The L, a, and b values were recorded and the color change (ΔE) between different stages was calculated. Results: ANOVA revealed significant between-group differences in the color change between T1 and T2 stages, as well as between T1 and T3 time points (p<0.05), whereas the color change between T2 and T3 was not significantly different among the study groups (p=0.09). ΔET1-T3 was significantly lower in the specimens immersed in distilled water or CHX as compared to the nanoparticle-containing mouthwashes (p<0.05). The highest ΔE value pertained to the specimens immersed in nanoZnO-containing solution. The TiO2 nanoparticles caused the lowest staining among the tested nanoparticles. Conclusions: The mouthwashes containing nanoparticles produced comparable or even greater enamel discoloration compared to CHX. Brushing had little effect on removal of induced stains. © Medicina Oral S.L.

Item Type: Article
Additional Information: Cited By :7 Export Date: 16 February 2020 Correspondence Address: Ahrari, F.; Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences Vakilabad BoulevardIran; email:
Uncontrolled Keywords: Chlorhexidine Discoloration Enamel Mouthrinse Mouthwash Nanoparticle Staining
Subjects: WU Dentistry. Oral surgery
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib5 lib5
Date Deposited: 12 May 2020 07:47
Last Modified: 12 May 2020 07:47

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