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Quintessence Publishing: Journals: JAD

 

The Journal of Adhesive Dentistry

Edited by Jean-François Roulet

ISSN (print) 1461-5185 • ISSN (online) 1757-9988

Publication:

July/August 2012
Volume 14 , Issue 4



Pages: 385 - 392
PMID: 22282752
DOI: 10.3290/j.jad.a22711
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Bonding of Resin-based Luting Cements to Zirconia With and Without the Use of Ceramic Priming Agents

Koizumi, Hiroyasu / Nakayama, Daisuke / Komine, Futoshi / Blatz, Markus B. / Matsumura, Hideo

Purpose: This study evaluated and compared bonding characteristics of resin-based luting agents and special ceramic primers to zirconia.
Materials and Methods: Disk specimens (n = 242) were fabricated from zirconium dioxide ceramics (Katana) and bonded with four resin-based luting agents without priming. In addition, zirconia was bonded with 7 bondingsystem combinations of three priming agents and three resin-based luting agents. Two of the resin-based luting agents and two ceramic priming agents contain an identical adhesive monomer, 10-methacryloyloxydecyl dihydrogen phosphate (MDP), either in the material itself or in the priming agent. Shear bond strength was determined after 20,000 cycles of thermocycling. The Kruskal-Wallis test was performed for both pre- and post-thermocycling groups to evaluate the difference among primer and luting agent variations. On the basis of the Kruskal-Wallis test, Steel-Dwass multiple comparisons were further performed to compare the difference among four luting agents and seven conbinations of three primers and three luting agents for both pre- and post-thermocycling conditions.
Results: Within the four unprimed groups, Clearfil SA Cement (5.8 MPa) and Panavia F 2.0 (6.7 MPa) showed statistically higher post-thermocycling bond strength than the other materials (0.1 MPa) (p < 0.05). Among the seven primer/cement combinations, Clearfil Ceramic Primer combined with Clearfil Esthetic Cement exhibited the highest post-thermocycling bond strength (7.5 MPa), followed by two groups primed with Monobond Plus (4.0-4.6 MPa) (p < 0.05).
Conclusion: Application of resin-based luting and priming agents containing the adhesive monomer MDP provide better bond strength to zirconia than do other systems.

Keywords: bonding, phosphate, primer, zirconia

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