title: Deproteinized dentin: a favorable substrate to self-bonding resin cements?
abstract: The adhesive performance on deproteinized dentin of different self-adhesive resin cements was evaluated through microtensile bond strength (μTBS) analysis and scanning electron microscopy (SEM). Occlusal dentin of human molars were distributed into different groups, according to the categories: adhesive cementation with two-step bonding systems-control Groups (Adper Single Bond 2 + RelyX ARC/3M ESPE; One Step Plus + Duolink/Bisco; Excite + Variolink I/Ivoclar Vivadent) and self-adhesive cementation-experimental groups (Rely X Unicem/3M ESPE; Biscem/Bisco; MultiLink Sprint/Ivoclar Vivadent). Each group was subdivided according to the dentin approach to: α, maintenance of collagen fibers and β, deproteinization. The mean values were obtained, and submitted to ANOVA and Tukey test. Statistical differences were obtained to the RelyX Unicem groups (α = 13.59 MPa; β = 30.19 MPa). All the BIS Group specimens failed before the mechanical tests. Dentinal deproteinization provided an improved bond performance for the self-adhesive cement Rely X Unicem, and had no negative effect on the other cementing systems studied.
authors.affiliation: Department of Prosthesis and Maxillofacial Surgery, Federal University of Pernambuco, Recife, Pernambuco, Brazil. fbsonline@ig.com.br
authors.forename: Fábio
authors.initials: F
authors.lastname: Barbosa De Souza
authors.forename: Carina
authors.initials: C
authors.lastname: Sinclér Delfino
authors.forename: Míriam
authors.initials: M
authors.lastname: Lacalle Turbino
authors.forename: Rodivan
authors.initials: R
authors.lastname: Braz
mesh_terms: D000268:Adhesiveness; D003804:Dentin / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D008963:Molar; D019279:Resin Cements / Q000592:standards*; D013718:Tensile Strength
chemical_list: D019279:Resin Cements