Artículos de revistas
Effect of adhesive cementation strategies on the bonding of y-tzp to human dentin
Fecha
2016-05-01Registro en:
Operative Dentistry, v. 41, n. 3, p. 276-283, 2016.
0361-7734
10.2341/15-052-L
2-s2.0-84979245221
Autor
Universidade Federal da Paraíba (UFPB)
Universidade Estadual Paulista (Unesp)
Universidade Federal de Pernambuco (UFPE)
Clinic for Fixed and Removable Prosthodontics and Dental Materials Science
Institución
Resumen
This study evaluated the effects of different adhesive strategies on the adhesion of zirconia to dentin using conventional and self-adhesive cements and their corresponding adhesive resins. The occlusal parts of human molars (N=80) were sectioned, exposing the dentin. The teeth and zirconia cylinders (N=80) (diameter= 3.4 mm; height=4 mm) were randomly divided into eight groups according to the factors surface conditioning and cement type (n=10 per group). One conventional cement (CC: RelyX ARC, 3M ESPE) and one self-adhesive cement (SA: RelyX U200, 3M ESPE) and their corresponding adhesive resin (for CC, Adper Single Bond Plus; for SA, Scotchbond Universal Adhesive-SU) were applied on dentin. Zirconia specimens were conditioned either using chairside (CJ: CoJet, 30 lm, 2.5 bar, four seconds), laboratory silica coating (RC: Rocatec, 110 lm, 2.5 bar, four seconds), or universal primer (Single Bond Universal-UP). Nonconditioned groups for both cements acted as the control (C). Specimens were stored in water (378C, 30 days) and subjected to shear bond strength (SBS) testing (1 mm/min). Data (MPa) were analyzed using two-way analysis of variance and a Tukey test (a=0.05). While surface conditioning significantly affected the SBS values (p=0.0001) (C,RC=CJ=UP), cement type did not (p=0.148) (CC=SA). The interaction terms were significant (p=0.014). Failure types were predominantly adhesive. Air-abrasion and the use of the universal primer improved the bond strength of zirconia to dentin compared to the control group, regardless of the type of resin cement used.