Effect of noble metal primers on the microtensile bond strength of resin cements to zirconia
Objective: The purpose of this study was to evaluate the effect of two thiol-derivative noble metal primers on the microtensile bond strength of resin cements to zirconia. Methods: Thirty-six block specimens of zirconia were prepared, and their surfaces were sandblasted with 250 and 50 μm alumin...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | https://repository.li.mahidol.ac.th/handle/123456789/1089 |
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| Institution: | Mahidol University |
| Language: | English |
| Summary: | Objective: The purpose of this study was to evaluate the effect of two
thiol-derivative noble metal primers on the microtensile bond strength of
resin cements to zirconia.
Methods: Thirty-six block specimens of zirconia were prepared, and their
surfaces were sandblasted with 250 and 50 μm aluminum oxide particles.
Specimens were divided into six groups, which were treated and bonded
in combination with two noble primers (Alloy primer® and Metaltite®) and
two resin cements (Panavia F and RelyX U100). Resin cements without
noble primer treated specimens served as control. All specimens were
stored in water at 37 ÌC for 24 hours. After storage, one specimen block
was cut into 12 microbars with 1 mm2
bonded surface. The microbars were
randomly divided into two testing conditions. Half of them were subjected
to a microtensile test immediately and the other hall thermocycled at 5
to 55 ÌC for 10,000 cycles before microtensile testing.
Results and Conclusion: Both thiol-derivative noble metal primers did not
show any effect on the bond to zirconia. However, MDP, containing in
Panavia F and Alloy primer, was found to influence the bond to zirconia.
The durability of the bond to zirconia was unstable under thermocycling.
Significance: The thiol-derivative noble metal primer did not enhance the
bond to zirconia |
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