Wir verwenden Cookies, um für diese Website Funktionen wie z.B. Login, einen Warenkorb oder die Sprachwahl zu ermöglichen. Weiterhin nutzen wir für anonymisierte, statistische Auswertungen der Nutzung Google Analytics, welches Cookies setzt. Mehr Informationen finden Sie in unserer Datenschutzerklärung.
OK, ich bin einverstanden Ich möchte keine Google Analytics-Cookies
International Journal of Esthetic Dentistry  (English Edition)
Login:
Benutzername:

Kennwort:

Plattform:

Kennwort vergessen?

Registrieren

Int J Esthet Dent 7 (2012), Nr. 2     22. Mai 2012
Int J Esthet Dent 7 (2012), Nr. 2  (22.05.2012)

Seite 164-175, PubMed:22645731, Sprache: Englisch


Early Bond Strength to Low-pressure Sandblasted Zirconia: Evaluation of a Self-adhesive Cement
Re, Dino / Augusti, Davide / Augusti, Gabriele / Giovannetti, Agostino
The debonding of a densely sintered zirconia prosthesis is a clinically reported, and undesirable event. A standardized, affordable adhesive cementation protocol for zirconia-based restorations is not yet available. The aim of this investigation was to assess the influence of several surface treatments on the initial shear bond strength of self-adhesive resin cement to densely sintered zirconia ceramic. Thirty densely sintered zirconia cylinders were divided into three groups (n = 10). Each of them received a different surface treatment: control (No_T), with the zirconia surface unconditioned; low pressure air abrasion (Sand_S) (50 µm, 1 bar); and standardized air abrasion (Sand_H) (50 µm, 2.8 bar). Three more surface-treated only specimens were addressed to scanning electron microscope (SEM) for qualitative observations. After specimen fabrication, self-adhesive cementceramic interface was analyzed using SBS (shear bond strength) test. Mean shear bond strengths (MPa) obtained for Sand_H and Sand_S were 16.24 ± 2.95 and 16.01 ± 2.68, respectively; no statistically significant difference (P = 0.8580) was found between sandblasted groups. Low-pressure air abrasion positively affected the initial self-adhesive cement adhesion to zirconia with respect to the No_T control group; however it did not prevent scratches and the formation of microcracks on the ceramic surfaces.
Volltext (keine Berechtigung) einzeln als PDF kaufen (20.00 €)Endnote-Export