title: Bonding to silicate ceramics: Conventional technique compared with a simplified technique.
abstract: BACKGROUND
  Silicate ceramic bonding is carried out by acid-etching with hydrofluoric acid (HF) followed by an application of silane. By replacing HF with ammonium polyfluoride, contained in the same flask as the silane, the number of steps in this clinical procedure, can be reduced, while maintaining bond strength values, and reducing toxicity. A shear bond test was performed to compare the conventional and the simplified surface treatment techniques.
  
  
  METHODS
  Twenty ceramic samples were fabricated from IPS emax CAD® ceramic (Ivoclar Vivadent) and divided into two groups (G1 and G2) (n=10). The conventional technique was applied to G1 samples, and the simplified technique to G2 samples. A resin cement cylinder was bonded to each sample. Afterwards, samples underwent shear bond strength testing in a universal test machine.
  
  
  RESULTS
  G1 obtained 26.53±6.33 MPa and G2 23.52±8.41 MPa, without statistically significant differences between the two groups.
  
  
  CONCLUSIONS
  Monobond Etch&Prime appears to obtain equivalent results in terms of bond strength while simplifying the technique. Further investigation is required to corroborate these preliminary findings.Key words:Shear bond strength, surface treatment, bonding to ceramic, hydrofluoric acid, ammonium polyfluoride.
authors.affiliation: Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain.
authors.forename: Juan-Luis
authors.initials: JL
authors.lastname: Román-Rodríguez
authors.affiliation: Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain.
authors.forename: Jorge-Alonso
authors.initials: JA
authors.lastname: Perez-Barquero
authors.affiliation: Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain.
authors.forename: Eva
authors.initials: E
authors.lastname: Gonzalez-Angulo
authors.affiliation: Assistant Lecturer, Department of Dental medicine, Prosthodontic and Occlusion Teaching Unit, UVGS, Spain.
authors.forename: Antonio
authors.initials: A
authors.lastname: Fons-Font
authors.affiliation: Associate Lecturer, Department of Dental Medicine, Prosthodontic and Occlusion Teaching Unit, University of Valencia, University of Valencia General Studies (UVGS), Spain.
authors.forename: Jose-Luis
authors.initials: JL
authors.lastname: Bustos-Salvador