Surface preparation and isotropic shear bond strength properties of superficial bovine dentin

Camila Sabatini,Sebastiano Andreana,Zhe Wu

doi:10.4236/ojst.2013.34046

Abstract

The effect of different types of surface preparation with SiC abrasive paper on the shear bond strength (SBS) of superficial bovine dentin obtained from the incisal, middle and cervical thirds were evaluated. Dentin substrates were obtained with twenty specimens for each locationgrit combination. Superficial dentin was exposed and prepared to 120-, 320-, or 600-grit SiC; the dentin surfaces were treated with Optibond Solo Plus (Kerr) and polymerized for 20 s. The specimens were placed in a jig, filled with resin composite Z100 (3M-ESPE), polymerized for 40 s according to manufacturer’s instructions, and stored for 24 h at 37℃ and 100% humidity. After 24 h, SBS was measured using a loading testing machine (Ul-tradent) and expressed in megapascals. A two-way ANOVA and Tukey test were used for data analysis. No statistically significant effect of the location (P = 0.254) or interaction grit-location (P = 0.629) were observed on SBS. Statistically significant effect of the grit on the SBS was detected (P

Highlights

Adhesion to tooth structure, to dentin, has been subject of extensive research in the last few dec-ades [1,2,3]
No significant differences were observed between 600-grit and 120-grit (P = 0.413)
A set of guidelines was developed by the International Organization for Standardization (ISO) to standardize bond strength testing of adhesive interfaces and facilitate reproducibility of the testing conditions and allow comparisons among studies. (ISO/TR 11405:1994) despite standardization efforts, variability in the testing conditions still exists in aspects related to the substrate and testing itself compromising the validity of the comparisons among studies [6]

Summary

Introduction

To dentin, has been subject of extensive research in the last few dec-ades [1,2,3]. To dentin, has been subject of extensive research in the last few dec-. While bond strength tests have allowed the development of improved adhesive systems and techniques, they are subject to a number of limitations and its results vary considerably depending on a number of structural and testing procedures [5]. A set of guidelines was developed by the International Organization for Standardization (ISO) to standardize bond strength testing of adhesive interfaces and facilitate reproducibility of the testing conditions and allow comparisons among studies. (ISO/TR 11405:1994) despite standardization efforts, variability in the testing conditions still exists in aspects related to the substrate and testing itself compromising the validity of the comparisons among studies [6] A set of guidelines was developed by the International Organization for Standardization (ISO) to standardize bond strength testing of adhesive interfaces and facilitate reproducibility of the testing conditions and allow comparisons among studies. (ISO/TR 11405:1994) despite standardization efforts, variability in the testing conditions still exists in aspects related to the substrate and testing itself compromising the validity of the comparisons among studies [6]

Objectives

Methods

Results

Conclusion