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CC BY-NC-ND 4.0 · Eur J Dent 2011; 05(02): 157-162
DOI: 10.1055/s-0039-1698873
Original Article
Dental Investigation Society

Surface Modifications on Aesthetically Restored Teeth following Home Bleaching with 16% Peroxide Carbamide

Augusto Bodanezi
a   Department of Dentistry, Endodontics and Dental Materials, School of Dentistry, University of São Paulo, Bauru, SP, Brazil.
,
Marcos Eugênio de Bittencourt
b   Department of Restorative Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil.
,
Rafaela Vanni Bodanezi
c   Department of Restorative Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil.
,
Tatiana Zottis
c   Department of Restorative Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil.
,
Etiene Andrade Munhoz
d   Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
,
Bruno Carlini-Júnior
b   Department of Restorative Dentistry, School of Dentistry, University of Passo Fundo, Passo Fundo, RS, Brazil.
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Publikationsdatum:
30. September 2019 (online)

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ABSTRACT

Objectives: This clinical study evaluated the effects of a highly concentrated home-bleaching agent on the surface morphology of aesthetically restored teeth. Methods: Specimens of human enamel and micro-hybrid composite resin were randomly adhered to the buccal side of right premolar and molar teeth of ten volunteers, who underwent a routine home-bleaching procedure with 16% carbamide peroxide on the upper jaw for 8 days. The mandibular unbleached specimens served as paired controls (n=10). Ultra-structural assessment of the sample was carried out by scanning electron microscopy, and the resulting images were blindly evaluated for topographical alterations. The differences between groups were calculated with the Mann-Whitney test adjusted at the 95% confidence interval. Results: The bleached enamel presented significantly more morphological changes than the control group. The aspect of resin composite exposed to the whitening substance was statistically similar to that observed in the corresponding control group (P<.05). Conclusions: The occurrence of surface topography changes during home bleaching of aesthetically restored teeth with 16% carbamide peroxide was restricted to enamel. (Eur J Dent 2011;5:157- 162)

Key words:

Tooth bleaching - Carbamide peroxide - Composite resin - Tooth enamel
 

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