Journal article

Thin and thick layers of resin-based sealer cement bonded to root dentine compared: Adhesive behaviour

Epita S Pane, Joseph EA Palamara, Harold H Messer



This study aims to evaluate tensile and shear bond strengths of one epoxy (AH) and two methacrylate resin-based sealers (EZ and RS) in thin and thick layers bonded to root dentine. An alignment device was prepared for accurate positioning of 20 root dentine cylinders in a predefined gap of 0.1 or 1 mm. Sealer was placed in the interface. Bond strength tests were conducted. Mode of failures and representative surfaces were evaluated. Data were analysed using anova and post-hoc tests, with P < 0.05. The thick layer of sealer produced higher bond strength, except for the shear bond strength of EZ. Significant differences between thin and thick layers were found only in tensile bond strengths of..

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Funding Acknowledgements

This research was supported by Post-Graduate Research Grant, Australian Society of Endodontics and Postgraduate Research Fund of Melbourne Dental School, University of Melbourne. We would like to thank Mr. Roger Curtain for assisting in the use of scanning electron microscopy in Advanced Microscopy Facility, Bio21. We would like to thank Ms. Rachel Sore, Statistical Consultlug Centre, University of Melbourne, for the statistical consultation.