Title: Durable bonding to mechanically and/or chemically pre-treated dental zirconia
Authors: Inokoshi, Masanao *
Kameyama, Atsushi *
De Munck, Jan
Minakuchi, Shunsuke
Van Meerbeek, Bart # ×
Issue Date: Feb-2013
Publisher: Elsevier Ltd.
Series Title: Journal of Dentistry vol:41 issue:2 pages:170-179
Article number: 10.1016/j.jdent.2012.10.017
Abstract: Objectives: To evaluate the effect of mechanical and chemical
surface pre-treatment on the bond durability of two composite cements to
dental zirconia. Methods: Fully sintered IPS e.max ZirCAD (Ivoclar-
Vivadent) blocks were either subjected to tribochemical silica
sandblasting (CoJet, 3M ESPE) or not mechanically pre-treated. Next, the
zirconia samples were either additionally pre-treated using one of two
silane/MDP-combined ceramic primers (Clearfil Ceramic Primer, Kuraray;
Monobond Plus, Ivoclar-Vivadent), or not further chemically pre-treated.
Finally, two identically pre-treated zirconia blocks were bonded together
using either a conventional BisGMA-based (Clearfil Esthetic Cement,
Kuraray) or an MDP-based (Panavia F2.0, Kuraray) 'self-etch' dual-cure
composite cement. The specimens were trimmed at the interface to a
cylindrical hour-glass shape and stored for 7 days in distilled water
(37°C), after which they were randomly exposed to one of three ageing
protocols: (1) immersed in 37°C water for 10 days (10d); (2) subjected to
10,000 thermo-cycles (TC); or (3) immersed in 37°C water for 6 months
(6m). After storage, the micro-tensile bond strength (ìTBS) was
determined in MPa (n=15-21/group). Fractographic analysis was performed
using SEM. Results: Weibull analysis revealed the highest Weibull scale
and shape parameters for the 'CoJet/Clearfil Ceramic Primer/Panavia
F2.0/10d' combination. While the BisGMA-based composite cement Clearfil
Esthetic Cement (Kuraray) bonded equally well to zirconia using either
tribochemical silica sandblasting (CoJet, 3M ESPE) or not, sandblasting
appeared indispensable for the MDP-based and more hydrophilic composite
cement Panavia F2.0 (Kuraray). Conclusions: Combined mechanical and
chemical pre-treatment can best be recommended to durably bond to
Clinical Significance: As a standard procedure to durable bond zirconia
to tooth tissue, both mechanical (tribochemical silica coating) and
chemical (silane/MDP-combined ceramic primers) is clinically highly
ISSN: 0300-5712
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Biomaterials - BIOMAT
* (joint) first author
× corresponding author
# (joint) last author

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