title: A comparison of shear bond strength of ceramic and resin denture teeth on different acrylic resin bases.
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.
authors.affiliation: School of Dentistry, University of Bari, Bari, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Corsalini
authors.affiliation: School of Dentistry, University of Bari, Bari, Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Di Venere
authors.affiliation: School of Dentistry, University of Bari, Bari, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Pettini
authors.affiliation: School of Dentistry, University of Bari, Bari, Italy.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Stefanachi
authors.affiliation: School of Dentistry, University of Ferrara, Ferrara, Italy.
authors.forename: Santo
authors.initials: S
authors.lastname: Catapano
authors.affiliation: Department of Mechanics, Mathematics and Management (DMMM), Politecnico di Bari, Bari, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Boccaccio
authors.affiliation: Department of Mechanics, Mathematics and Management (DMMM), Politecnico di Bari, Bari, Italy.
authors.forename: Luciano
authors.initials: L
authors.lastname: Lamberti
authors.affiliation: Department of Mechanics, Mathematics and Management (DMMM), Politecnico di Bari, Bari, Italy.
authors.forename: Carmine
authors.initials: C
authors.lastname: Pappalettere
authors.affiliation: School of Dentistry, University of Turin, Turin, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Carossa
keywords: Acrylic Resin Teeth; Ceramic Teeth; Resin Bases; Sandblasting; Shear Bond Strength.