RESEARCH ARTICLE


A Comparison of Shear Bond Strength of Ceramic and Resin Denture Teeth on Different Acrylic Resin Bases



Massimo Corsalini *, 1, Daniela Di Venere 1, Francesco Pettini 1, Gianluca Stefanachi 1, Santo Catapano 2, Antonio Boccaccio *, 3, Luciano Lamberti 3, Carmine Pappalettere 3, Stefano Carossa 4
1 School of Dentistry, University of Bari, Bari, Italy
2 School of Dentistry, University of Ferrara, Ferrara, Italy
3 Department of Mechanics, Mathematics and Management (DMMM), Politecnico di Bari, Bari, Italy
4 School of Dentistry, University of Turin, Turin, Italy


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Creative Commons License
© Corsalini et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to these author at the Università degli Studi di Bari (Italy) - Dental School, Piazza Giulio Cesare, 10, I-70121 Bari, Italy; Tel: +39 0805478153; Fax: +39 0805478743; E-mail: massimo.corsalini@uniba.it and Department of Mechanics, Mathematics and Management (DMMM), Politecnico di Bari, Bari, Italy; Tel: +39 0805962829; Fax: +39 0805962777; E-mail: a.boccaccio@poliba.it


Abstract

The purpose of this study is to compare the shear bond strength of different resin bases and artificial teeth made of ceramic or acrylic resin materials and whether tooth-base interface may be treated with aluminium oxide sandblasting. Experimental measurements were carried on 80 specimens consisting of a cylinder of acrylic resin into which a single tooth is inserted. An ad hoc metallic frame was realized to measure the shear bond strength at the tooth-base interface. A complete factorial plan was designed and a three-way ANalysis Of VAriance (ANOVA) was carried out to investigate if shear bond strength is affected by the following factors: (i) tooth material (ceramic or resin); (ii) base material (self-curing or thermal-curing resin); (iii) presence or absence of aluminium oxide sandblasting treatment at the tooth-base interface. Tukey post hoc test was also conducted to evaluate any statistically significant difference between shear strength values measured for the dif-ferently prepared samples. It was found from ANOVA that the above mentioned factors all affect shear strength. Furthermore, post hoc analysis indi-cated that there are statistically significant differences (p-value=0.000) between measured shear strength values for: (i) teeth made of ceramic material vs. teeth made of acrylic resin material; (ii) bases made of self-curing resin vs. thermal-curing resin; (iii) specimens treated with aluminium oxide sandblasting vs. untreated specimens. Shear strength values measured for acryl-ic resin teeth were on average 70% higher than those measured for ceramic teeth. The shear bond strength was maximized by preparing samples with thermal-curing resin bases and resin teeth submitted to aluminium oxide sandblasting.

Keywords: Acrylic Resin Teeth, Ceramic Teeth, Resin Bases, Sandblasting, Shear Bond Strength. .