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Long-term evaluation of the bond strength, nanoleakage patterns and ultramorphological characteristics of resin-dentin interfaces produced by self-adhesive cements

Grant number: 07/06083-4
Support type:Regular Research Grants
Duration: January 01, 2008 - December 31, 2009
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal researcher:André Figueiredo Reis
Grantee:André Figueiredo Reis
Home Institution: Universidade de Guarulhos (UNG). Campus Guarulhos-Centro. Guarulhos , SP, Brazil

Abstract

The aim of this project will be to evaluate the effects of water exposure on the microtensile bond strength, on the nanoleakage patterns and on the ultramorphological characteristics of resin-dentin interfaces produced by different self-adhesive resin-based cements. Five self-adhesive cements will be used: RelyX Unicem (3M Espe), Breeze (Pentron), BisCem (Bisco), G-Cem (GC America), Maxcem (Kerr); and two conventional resin cements (Rely X ARC, 3M Espe; and Panavia F, Kuraray). Eighty-four third molars will be used, which will be randomly distributed into 7 groups according to the luting material, and then subdivided into 3 subgroups according to water exposure method: 24 hours, 12 months with a circumferential enamel margin and 12 months with dentin margins. Pre-polymerized composite cylinders will be cemented according to manufacturers’ instructions. After the storage periods, the restored teeth (n=4) will be serially sectioned, producing beams with a cross-sectional area of 0.8 mm2 at the resin-dentin interface, which will be tested in tension in a universal testing machine. Teeth luted with each material will be submitted to a nanoleakage protocol with AgNO3 after each storage period (n=4) and will be prepared for observation in a Scanning and Transmission Electron Microscope. Two additional specimens in each group will be prepared for ultrastructural observation of the resin-dentin interface with the TEM for the determination of the interaction mechanism between these materials and dentin. The bond strength and nanoleakage data will be statistically analyzed by two-way ANOVA and Tukey test. (AU)

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Scientific publications (10)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ROMANINI-JUNIOR, JOSE C.; KUMAGAI, ROSE Y.; ORTEGA, LUIZ F.; RODRIGUES, JOSE A.; CASSONI, ALESSANDRA; HIRATA, RONALDO; REIS, ANDRE F.. Adhesive/silane application effects on bond strength durability to a lithium disilicate ceramic. Journal of Esthetic and Restorative Dentistry, v. 30, n. 4, p. 346-351, . (09/16261-2, 07/06083-4, 14/23401-3)
VERMELHO, PAULO MOREIRA; AGUIAR, FLAVIO HENRIQUE BAGGIO; REIS, ANDRE FIGUEIREDO; GIANNINI, MARCELO. Bond Strength and Interfacial Ultramorphology of Current Adhesive Systems. JOURNAL OF ADHESION, v. 87, n. 12, p. 1148-1166, . (07/06083-4)
SANTANA, V. B.; DE ALEXANDRE, R. S.; RODRIGUES, J. A.; ELY, C.; REIS, A. F.. Effects of Immediate Dentin Sealing and Pulpal Pressure on Resin Cement Bond Strength and Nanoleakage. Operative Dentistry, v. 41, n. 2, p. 189-199, . (08/07628-7, 09/16261-2, 14/23401-3, 07/06083-4, 08/05179-0)
KASAZ, ALLINE C.; PENA, CARLOS E.; DE ALEXANDRE, RODRIGO S.; VIOTTI, RONALDO G.; SANTANA, VERONICA B.; ARRAIS, CESAR A. G.; GIANNINI, MARCELO; REIS, ANDRE F.. Effects of a Peripheral Enamel Margin on the Long-term Bond Strength and Nanoleakage of Composite/Dentin Interfaces Produced by Self-adhesive and Conventional Resin Cements. Journal of Adhesive Dentistry, v. 14, n. 3, p. 251-263, . (07/06083-4, 07/06447-6)
CÉSAR AUGUSTO GALVÃO ARRAIS; ALINE DE CERQUEIRA KASAZ; LUÍS GUSTAVO BARROTE ALBINO; JOSÉ AUGUSTO RODRIGUES; ANDRE FIGUEIREDO REIS. Effect of curing mode on the hardness of dual-cured composite resin core build-up materials. Brazilian Oral Research, v. 24, n. 2, p. 245-249, . (07/06447-6, 07/06083-4)
FERREIRA-FILHO, R. C.; ELY, C.; AMARAL, R. C.; RODRIGUES, J. A.; ROULET, J-F; CASSONI, A.; REIS, A. F.. Effect of Different Adhesive Systems Used for Immediate Dentin Sealing on Bond Strength of a Self-Adhesive Resin Cement to Dentin. Operative Dentistry, v. 43, n. 4, p. 391-397, . (08/07628-7, 09/16261-2, 14/23401-3, 07/06083-4, 08/05179-0)
KUMAGAI, ROSE Y.; HIRATA, RONALDO; PEREIRA, PATRICIA N. R.; REIS, ANDRE F.. Moist vs over-dried etched dentin: FE-SEM/TEM and bond strength evaluation of resin-dentin interfaces produced by universal adhesives. Journal of Esthetic and Restorative Dentistry, . (09/16261-2, 07/06083-4, 14/23401-3)
MORETTO, SIMONE G.; AZAMBUJA, JR., NILTON; ARANA-CHAVEZ, VICTOR E.; REIS, ANDRE F.; GIANNINI, MARCELO; EDUARDO, CARLOS DE P.; DE FREITAS, PATRICIA M.. Effects of Ultramorphological Changes on Adhesion to Lased Dentin-Scanning Electron Microscopy and Transmission Electron Microscopy Analysis. MICROSCOPY RESEARCH AND TECHNIQUE, v. 74, n. 8, p. 720-726, . (07/06083-4)
LEONETTI, EDUARDO DOS SANTOS; RODRIGUES, JOSE AUGUSTO; REIS, ANDRE FIGUEIREDO; NAVARRO, RICARDO SCARPARO; CORREA ARANHA, ANA CECILIA; CASSONI, ALESSANDRA. Effects of Er:YAG Laser Irradiation on the Microtensile Bond Strength to Bleached Enamel. Photomedicine and Laser Surgery, v. 29, n. 8, p. 551-558, . (07/06083-4)
VIOTTI, RONALDO G.; KASAZ, ALLINE; PENA, CARLOS E.; ALEXANDRE, RODRIGO S.; ARRAIS, CESAR A.; REIS, ANDRE F.. MICROTENSILE BOND STRENGTH OF NEW SELF-ADHESIVE LUTING AGENTS AND CONVENTIONAL MULTISTEP SYSTEMS. JOURNAL OF PROSTHETIC DENTISTRY, v. 102, n. 5, p. 306-312, . (07/06083-4, 07/06447-6)

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