title: Effect of bioglass and silica coating of zirconia substrate on its bond strength to resin cement.
abstract: This study aimed to assess the effect of bioglass and silica coating of zirconia substrate on its bond strength to resin cement. A total of 120 specimens were used in this in-vitro, experimental study. Zirconia discs measuring 10×7×2 mm were cut from Y-TZP zirconia blocks, sintered, cleaned and received different surface treatments of sandblasting, bioglass powder coating+etching, bioglass powder coating+etching+silanization, bioglass slurry coating+etching, bioglass slurry coating+etching+silanization, silica coating+silanization, silica coating+etching+silanization and no treatment group (control). Then the microshear bond strength testing and scanning electron microscope (SEM) analysis were done. Data were analyzed using the Mann Whitney U and the Kruskal Wallis tests. Significant differences existed in bond strength of different groups (p<0.001). The sandblasted and bioglass coated groups showed higher and the colloidal silica-coated groups showed lower bond strength compared to the control group.
authors.affiliation: Department of Operative Dentistry, Shahid Beheshti University of Medical Sciences, Dental School.
authors.forename: Maryam
authors.initials: M
authors.lastname: Moezzizadeh
authors.forename: Hanieh
authors.initials: H
authors.lastname: Nojedehian
authors.forename: Haleh
authors.initials: H
authors.lastname: Valizadeh Haghi
mesh_terms: D001840:Dental Bonding; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements; D033081:Shear Strength; D012821:Silanes; D012822:Silicon Dioxide; D013499:Surface Properties; D015040:Zirconium
chemical_list: D019279:Resin Cements; D012821:Silanes; D012822:Silicon Dioxide; D015040:Zirconium