Journal of Dentistry
Volume 35, Issue 7 , Pages 564-569, July 2007

Effect of activation mode of dual-cured resin cements and low-viscosity composite liners on bond strength to dentin

  • Rubens Nazareno Garcia

      Affiliations

    • Dental Materials Section, Dental School of UNIVALI, Itajaí, SC, Brazil
    • Dental Materials Section, Dental School of UNIVILLE, Joinville, SC, Brazil
    • ,
  • André Figueiredo Reis

      Affiliations

    • Department of Operative Dentistry, School of Dentistry, University of Guarulhos, Guarulhos, SP, Brazil
    • ,
  • Marcelo Giannini

      Affiliations

    • Department of Restorative Dentistry, Piracicaba School of Dentistry, Campinas State University, Av. Limeira, 901 - Piracicaba, SP, CEP 13414-018, Brazil
    • Corresponding Author InformationCorresponding author at: Operative Dentistry Section, Department of Restorative Dentistry, Piracicaba School of Dentistry, Campinas State University, Av. Limeira, 901 - Piracicaba, SP, CEP 13414-018, Brazil. Tel.: +55 19 21065338; fax: +55 19 21065218.

Received 10 November 2006; received in revised form 18 March 2007; accepted 19 March 2007.

Abstract 

Objectives

The aim of this study was to investigate the influence of the activation mode of dual-cured resin cements and application of low-viscosity composite liners over self-primed dentin on bond strength (BS) of dentin-bonding agents (DBA).

Methods

Three DBA (Single Bond; Prompt L-Pop and Clearfil SE Bond), their respective resin cements (RelyX ARC and Panavia F) and two low-viscosity composites (Filtek Flow and Protect Liner F) were tested. After removing the buccal enamel surfaces of 25 bovine incisors, each flat dentin surface was sectioned longitudinally and divided into two similar parts. The dentin surfaces were wet-abraded with 600-grit SiC paper and randomly divided into 10 groups. Experimental groups comprised the use of DBA and their respective dual-cured resin cements, with or without light-activation of resin cements. The low-viscosity resin was used only for the self-etching systems, Prompt L-Pop and Clearfil SE Bond. Three resin cement cylinders (0.5mm high and 0.75mm diameter) were built on each bonded dentin surface, using a tygon tubing mold. After water storage for 24h, specimens were subjected to micro-shear testing. Data were statistically analyzed by two-way ANOVA and Tukey test.

Results

Light-activation of resin cements resulted in significantly higher BS for all DBA versus groups in which the resin cements were allowed to self-cure. The low-viscosity composite application increased the BS only for Prompt L-Pop.

Conclusions

The bond strength of resin cements to dentin is reduced if light-activation is not employed. The use of a low-viscosity composite liner resulted in improved bond strength only for the single-step self-etching adhesive.

Keywords: Dentin-bonding agents, Dual-cured resin cements, Micro-shear bond strength, Low-viscosity composite, Light-activation, Scanning electron microscopy

To access this article, please choose from the options below

Login to an existing account or Register a new account.

  • Purchase this article for 31.50 USD (You must login/register to purchase this article)

    Online access for 24 hours. The PDF version can be downloaded as your permanent record.

  • Subscribe to this title

    Get unlimited online access to this article and all other articles in this title 24/7 for one year.

  • Claim access now

    For current subscribers with Society Membership or Account Number.

  • Visit SciVerse ScienceDirect to see if you have access via your institution.
 

PII: S0300-5712(07)00053-X

doi:10.1016/j.jdent.2007.03.004

Journal of Dentistry
Volume 35, Issue 7 , Pages 564-569, July 2007

Article Tools

* Image Usage & Resolution