Shelyn Akari Yamakami, Juliana Jendiroba Faraoni, Daniela Pires Caslini, Michelle Alexandra Chinelatti, Regina Guenka Palma-Dibb


The aim of this study was to evaluate the influence of post-bleaching time intervals using 37% carbamide peroxide on dental substrate adhesion. Fifty bovine incisors were sectioned in two groups of 4X4 mm standard blocks to obtain 50 specimens in each group (n=50). In fifty blocks, the dentin (D) was analyzed and in the other 50 the enamel (E). Blocks were subjected to bleaching treatment and restored with Single Bond/z250 according to post-bleaching time intervals (0, 7, 14 and 21 days). Twenty-four hours after adhesive/resin cylinders on substrate confection, shear bond strength test (SBS) was performed in an universal test machine. Means in MPa and their respective standard deviations were: E – control: 31.89 (2.39); T0: 19.07 (2.00); T7: 24.97 (4.89); T14: 29.71 (4.89); T21: 40.91 (4.75) and D – control: 18.90 (3.64); T0: 2.22 (0.41); T7: 3.79 (0.75); T14: 5.95 (0.79); T21: 8.40 (0.87). Data were submitted to ANOVA and Tukey (p< 0.05) tests. The bond strength value for the enamel was statistically higher than the dentin, and both were lower than the control group that had similar results after 21 days post-bleaching. In dentin group, the control showed superior bond strength and was statistically different in relation to other times. It was concluded that bleaching had negative influence on adhesion. Therefore it is necessary to wait, at least, 21 days after bleaching to restore the enamel.


Bleaching Agents; Peroxides; Dentin; Enamel

Texto completo:

PDF (English)


BARCELLOS, D. C.; BENETTI, P.; FERNANDES, V. V. B.; VALERA, M. C. Effect of carbamide peroxide bleaching gel concentration on the bond strength of dental substrates and resin composite. Operative dentistry, v. 35, n. 4, p. 463-469, 2010.

BARKHORDAR, R.A.; KEMPLER, D.; PLESH, O. Effect of nonvital tooth bleaching on microleakage of resin composite restorations. Quintessence International, v.28, n.5, p. 341-344, 1997.

BASTING, R. T.; RORIGUES, J. R. A. L.; SERRA, M. C. The effect of 10% carbamide peroxide bleaching material on microhardnes of sound and demineralized enamel and dentin in situ. Operative Denistryt, v.26, p. 531-539, 2001.

BASTING, R. T.; FREITAS, P. M. D.; PIMENTA, L. A. F.; SERRA, M. C. Shear bond strength after dentin bleaching with 10% carbamide peroxide agents. Brazilian oral research, v. 18, n. 2, p. 162-167, 2004.

BASTING, R. T.; ANTUNES, E. V.; TURSSI, C. P.; DO AMARAL, F. L.; FRANCA, F. M.; FLORIO, F. M. In vitro evaluation of calcium and phosphorus concentrations in enamel submitted to an in-office bleaching gel treatment containing calcium. General dentistry, v. 63, n. 5, p. 52-56, 2014.

BERGER, S. B.; TABCHOURY, C. P.; AMBROSANO, G. M.; GIANNINI, M. Hydrogen peroxide penetration into the pulp chamber and dental permeability after bleaching. General dentistry, v. 61, n. 3, p. e21-5, 2013.

BERGER, S. B.; SOARES, L. E. S.; MARTIN, A. A.; AMBROSANO, G. M. B.; TABCHOURY, C. P. M.; GIANNINI, M. Effects of various hydrogen peroxide bleaching concentrations and number of applications on enamel. Brazilian Journal of Oral Sciences, v. 13, n. 1, p. 22-27, 2014.

CANNABRAVA, V. P.; FERNANDES, S. L.; CALABRIA, M. P.; MAGALHLÃES, A. C.; ISHIKIRIAMA, S. K.; ATTA, M. T.; WANG, L. Bleaching technique effect on dentin permeability. American Journal of Dentistry, v. 27, n. 3, p. 145-8, 2014.

CARRASCO, L. D.; FRÖNER, I. C.; CORONA, S. A. M.; PÉCORA, J. D. Effect of internal bleaching agents on dentinal permeability of non‐vital teeth: quantitative assessment. Dental traumatology, v. 19, n. 2, p. 85-89, 2003.

CHNG, H.K.; PALAMARA, J.E.A.; MESSER, H.H. Effects of Hydrogen Peroxide and Sodium Perborate on Biomechanical Properties of Human Dentin. Journal of Endodontics, v.28, n.2, p. 62-67, 2002.

DA SILVA MACHADO, J.; CÂNDIDO, M. S. M.; SUNDFELD, R. H.; DE ALEXANDRE, R. S.; CARDOSO, J. D. The influence of time interval between bleaching and enamel bonding. Journal of Esthetic and Restorative Dentistry, v. 19, n. 2, p. 111-118, 2007.

DE FREITAS, P. M.; BASTING, R.T.; RODRIGUES, J. A.; SERRA, M. C. Effects of two 10% peroxide carbamide bleaching agents on dentin microhardness at different time intervals. Quintessence International, v. 33, p. 370-375, 2002.

DISHMAN, M.V.; COVEY, D.A.; BAUGHAN, L.W. The effects of peroxide bleaching on composite to enamel bond strength. Dental Materials, v.10, n.1, p. 33-36, 1994.

EIMAR, H.; SICILIANO, R.; ABDALLAH, M. N.; NADER, S. A.; AMIN, W. M.; MARTINEZ, P. P.; CELEMIN, A.; CERRUTI, M.; TAMIMI, F. Hydrogen peroxide whitens teeth by oxidizing the organic structure. Journal of Dentistry, v. 40, n. 2, p. e25-233, 2012.

FÉLIZ-MATOS, L.; HERNÁNDEZ, L. M.; ABREU, N. Dental bleaching techniques; hydrogen-carbamide peroxides and light sources for activation, an update. Mini review article. The Open Dentistry Journal, v. 8, p. 264, 2014.

FERREIRA, A. F. M.; PEREZ, F. M. D. M. R.; JÚNIOR, F. D. A. L.; DE MOURA, M. D. F. L.; DE SOUSA, F. B. Graded changes in enamel component volumes resulted from a short tooth bleaching procedure. Archives of oral biology, v. 65, p. 52-58, 2016.

GAUTHIER, M. A.; STANGEL, I.; ELLIS, T. H.; ZHU, X. X. Oxygen inhibition in dental resins. Journal of Dental Research, v. 84, p. 725–729, 2005.

HOSOYA, N. H.; COX, C. F.; ARAI, T.; NAKAMURA, J. The walking bleach procedure: an in vitro study to measure microleakage of five temporary sealing agents. Journal of Endodontics, v.26, n.12, p. 716-717, 2000.

KUMAR, A. A.; HARIHARAVEL, V. P.; NARAYANAN, A.; MURALI, S. Effect of protective coating on marginal integrity of nanohybrid composite during bleaching with carbamide peroxide: A microleakage study. Indian Journal of Dental Research, v. 26, n. 2, p. 167, 2015.

LEWINSTEIN, I.; FUHRER, N.; CHURARU, N.; CARDASH, H. Effect of different peroxide bleaching regimens and subsequent fluoridation on the hardness of human enamel and dentin. Journal of Prosthetic Dentistry, v. 92, n. 4, p. 337-342, 2004.

PIMENTEL, A. H.; VALENTE, L. L.; ISOLAN, C. P.; MÜNCHOW, E. A.; PIVA, E.; MORAES, R. R. Effect of waiting time for placing resin composite restorations after bleaching on enamel bond strength. Applied Adhesion Science, v. 3, n. 1, p. 23, 2015.

SPASSER, H. F. A simple bleaching technique using sodium perborate. The New York State Dental Journal, v. 27, p. 332-334, 1961.

SILVA, L.; THEDEI, G. Jr.; MENEZES-OLIVEIRA, M. A.; NOGUEIRA, R. D.; GERALDO-MARTINS, V. Tooth bleaching effects on the adhesive interface of composite restorations. The international journal of esthetic dentistry, v. 12, n. 1, p. 96-106, 2017.

TREDWIN, C. J.; NAIK, S.; LEWIS, N. J.; SCULLY, C. Hydrogen peroxide toothwhitening (bleaching) products: review of adverse effects and safety issues. British Dental Journal, v. 200, p. 371-376, 2006.

VAN DER VYVER, P. J.; LEWIS, S. B.; MARAIS, J. T. The effect of bleaching agent on composite/enamel bonding. The Journal of the Dental Association of South Africa, v.52, n.10, p. 601-603, 1997.

XU, B.; LI, Q.; WANG, Y. Effects of pH values of hydrogen peroxide bleaching agents on enamel surface properties. Operative Dentistry, v. 36, n. 5, p. 554-562, 2011.


Iniciação Científica Cesumar

Unicesumar, Maringá (PR), Brasil
ISSN 1518-1243 Impressa
ISSN 2176-9192 On-line

Licença Creative Commons
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional.