1008 Shear Bond Strength Of Two Self-Adhesive Resin Cements To Zirconia

Friday, March 23, 2012: 3:30 p.m. - 4:45 p.m.
Presentation Type: Poster Session
D.M. QEBLAWI, State University of New York - Buffalo, Buffalo, NY, P. MCCABE, Ivoclar Vivadent, Inc, Amherst, NY, O. NIHLAWI, Ivoclar Vivadent Inc, Amherst, NY, and M. CAMPILLO, Restorative Dentistry, State University of New York - Buffalo, Buffalo, NY
Objective: To compare the immediate and aged shear bond strength values of 2 commercially-available self-adhesive resin cements to zirconia: one utilizing silica-coating and silanation as zirconia surface treatment, and the other containing a phosphate monomer, eliminating the need for a separate primer.


Sixty resin-composite rods (2.5mm in diameter and 3mm in length) were fabricated from a nano-optimized resin-composite (Tetric EvoCeram) using a Teflon mold then light polymerized with an LED light (Bluephase-G2). Zirconia plates (10X10X4mm) were sectioned from yttria-stabilized full-contour zirconia puck  (DiaZir), sintered, then mounted in  autopolymerizing acrylic-resin custom tray material (Bosworth Fastray). Composite rods were cemented to the zirconia plates using 2 different cements. Surface treatment of zirconia followed manufacturers’ instructions for each cement (Table 1)




Mechanical Surface treatment

Airborne-particle abrasion

(50µ-Al2O3, 1-bar).


(30µ silica-modified Al2O3).

Chemical surface treatment


Silane coupling agent.

Specimens were light polymerized and divided into 3 groups for each cement:

1-Immediate: specimens were loaded to failure immediately after preparation. 2-24hr: specimens were stored in an incubator for 24hrs before loading. 3-Aged: specimens were stored in an incubator for 60 days and received 10,000 thermocyles (5-55, 15 seconds dwell time) before loading. Specimens were loaded to failure in a universal loading machine (Instron) and the data analyzed using 2-way ANOVA (alpha=0.05).


Shear bond strength values are listed in Table-2. Bond strength for both cements was highest at 24-hrs and lowest in the immediate groups. There was no statistically-significant difference between the cements at any group level.













Groups assigned different superscripts are significantly different(P<0.05).


Both cements had comparable bond strength to zirconia. MDP-containing SpeedCEM established a durable bond to full-contour zirconia without the need for a special surface treatment providing a more practical cementation choice.

This abstract is based on research that was funded entirely or partially by an outside source: material support was provided by Ivoclar Vivadent

Keywords: Adhesion, Cements, Ceramics and MDP
Presenting author's disclosure statement: I am an Employee of Ivoclar Vivadent Inc.
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