Influence of glutaraldehyde priming on bond strength of an experimental adhesive system applied to wet and dry dentine

Cilli, Renato; Prakki, Anuradha; de Araújo, Paulo Amarante; Pereira, José Carlos

doi:10.1016/j.jdent.2008.11.017

« Previous Next »Journal of Dentistry
Volume 37, Issue 3 , Pages 212-218, March 2009

Influence of glutaraldehyde priming on bond strength of an experimental adhesive system applied to wet and dry dentine

Renato Cilli
- Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Av Octavio Pinheiro Brisolla, 9-75, Bauru, São Paulo, 17012-901, Brazil
- Corresponding author at: Av Octavio Pinheiro Brisolla, 9-75, Bauru, São Paulo, 17012-901, Brazil. Tel.: +55 14 32358261.
Anuradha Prakki
- Department of Restorative Dentistry, Faculty of Dentistry, University of Toronto, 124 Edward St., Toronto, Ontario, Canada, M5G 1G6
Paulo Amarante de Araújo
- Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Av Octavio Pinheiro Brisolla, 9-75, Bauru, São Paulo, 17012-901, Brazil
José Carlos Pereira
- Department of Restorative Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Av Octavio Pinheiro Brisolla, 9-75, Bauru, São Paulo, 17012-901, Brazil

Received 9 August 2008; received in revised form 19 November 2008; accepted 21 November 2008.

Abstract

Objectives

This study tested the following null hypotheses: (1) there is no difference in resin–dentine bond strength when an experimental glutaraldehyde primer solution is added prior to bonding procedures and (2) there is no difference in resin–dentine bond strength when experimental glutaraldehyde/adhesive system is applied under dry or wet demineralized dentine conditions.

Methods

Extracted human maxillary third molars were selected. Flat, mid-coronal dentine was exposed for bonding and four groups were formed. Two groups were designated for the dry and two for the wet dentine technique: DRY: (1) Group GD: acid etching+glutaraldehyde primer (primer A)+HEMA/ethanol primer (primer B)-under dried dentine+unfilled resin; (2) Group D: the same as GD, except for primer A application; WET: (3) Group GW: the same as GD, but primer B was applied under wet dentine condition; (4) Group W: the same as GW, except for primer A application. The bonding resin was light-cured and a resin core was built up on the adhesive layer. Teeth were then prepared for microtensile bond testing to evaluate bond strength. The data obtained were submitted to ANOVA and Tukey's test (α=0.05).

Results

Glutaraldehyde primer application significantly improved resin–dentine bond strength. No significant difference was observed when the same experimental adhesive system was applied under either dry or wet dentine conditions. These results allow the first null hypothesis to be rejected and the second to be accepted.