Influence of priming agents on the short-term bond strength of an indirect composite veneering material to zirconium dioxide ceramic.
OBJECTIVE
Indirect composites are promising alternatives as veneering materials for zirconium dioxide (zirconia) ceramic frameworks. This study evaluated the effects of priming agents and a high-flow bonding agent on the short-term bond of an indirect composite material to a zirconia framework material.


METHODS
Indirect composite (Estenia C and B) was bonded to particle-abraded zirconia samples (Katana, n = 144) using no (control) or 1 of 8 priming agents: All Bond 2 Primer B (ABB), Alloy Primer (ALP), Clearfil Ceramic Primer (CCP), Clearfil Photo Bond (CPB), Clearfil Photo Bond with Clearfil Porcelain Bond Activator (CPB+Activator), Estenia Opaque Primer (EOP), Porcelain Liner M Liquid A (PLA), and V-Primer (VPR) with or without a high-flow bonding agent (Estenia C and B Opaque). Shear bond strength was tested after 24-hour wet storage. Data were analyzed with Levene test for equality of variance, Dunnett T3 multiple comparison, and Mann-Whitney U test (P = .05).


RESULTS
Mean bond strengths without the high-flow bonding agent application varied from 0.1 to 13.6 MPa, whereas bond strengths with bonding agent application ranged from 0.1 to 24.2 MPa. CPB+Activator (containing phosphate MDP and silane) and CPB (containing MDP) revealed the significantly highest bond strength among the 9 groups without high-flow bonding agent application (P < .05). Application of the high-flow bonding agent significantly increased bond strengths (P < .001).


CONCLUSIONS
Primers containing either the functional phosphate monomer MDP or an MDP-silane combination provide superior resin bonds of Estenia C and B composite to Katana zirconia. An intermediate high-flow bonding agent further improves the bond between these materials.
Kobayashi
Kazuhisa
K
Major in Fixed Prosthodontics, Nihon University Graduate School of Dentistry, Tokyo, Japan.
Komine
Futoshi
F
Blatz
Markus B
MB
Saito
Ayako
A
Koizumi
Hiroyasu
H
Matsumura
Hideo
H
D000269:Adhesives / Q000737:chemistry; D003188:Composite Resins; D001840:Dental Bonding; D045662:Dental Etching / Q000379:methods*; D003776:Dental Porcelain; D003799:Dental Stress Analysis; D008422:Materials Testing; D008689:Methacrylates; D011897:Random Allocation; D033081:Shear Strength; D012821:Silanes; D013871:Thiones; D015040:Zirconium
D000269:Adhesives; D003188:Composite Resins; C521708:Estenia Opaque Primer; D008689:Methacrylates; D012821:Silanes; D013871:Thiones; D003776:Dental Porcelain; C069749:methacryloyloxydecyl dihydrogen phosphate; D015040:Zirconium; C028541:zirconium oxide