IADR Abstract Archives
Bonding Properties of an Experimental Self-curing Resin Cement
Objectives: To determine the in-vitro shear bond strength (SBS) of an experimental resin cement to common material substrates and compare values to those obtained from a commercially available cement.
Methods: Forty specimens of feldsphatic ceramic (Duceram Plus, Ducera), forty specimens of palladium-gold alloy (Argedont 75, Argen Corp.) and forty specimens of sintered zirconia (Procera Y-TZP, Nobel Biocare) were fabricated and each material set was randomly divided into two groups of twenty samples each (G1 and G2). The bonding surfaces were conditioned in accordance with manufacturers’ instruction [feldsphatic ceramic: etching (G1, G2) and silanization (G1, G2); metal alloy: sandblasting (G1, G2) and metal priming (G2); sintered zirconia: sandblasting (G1) and silanization (G1, G2)]. The experimental cement (Multilink, Ivoclar) [G1] and the control cement (Panavia 21, Kuraray) [G2] were bonded using a standardized apparatus. Half of the samples of both groups was stored for one week in water at 37°C (TC 0); the other half was thermocycled 5,000 times (5°C-55°C) (TC 5,000). SBS was performed with an Instron Machine with a cross speed head of 0.5 mm/min.
Results: Mean and SD (MPa) are shown in the table.
| Material Substrate |
TC 0 |
TC 5,000 | ||
|
G1 SBS±S.D. (MPa) |
G2
SBS±S.D. (MPa) |
G1 SBS±S.D. (MPa) |
G2 SBS±S.D. (MPa) |
|
|
Feldsphatic Ceramic |
23.40±3.69 |
9.46±2.26 |
17.55±7.96 |
3.91±0.92 |
|
Metal alloy |
12.60±5.92 |
17.91±1.80 |
7.50±3.07 |
10.78±2.50 |
|
Zirconia |
11.43±4.83 |
12.78±1.89 |
7.19±2.93 |
6.96±1.46 |
Statistics (unpaired t-test, p<0.05) revealed a significantly higher SBS for the bond of Multilink to feldsphatic ceramic and of Panavia 21 to metal alloy.
Conclusion: The experimental cement seems to have a potential for clinical success on ceramic substrates. The future use of a metal primer may influence its adhesion to metal substrates.
Supported by Ivoclar/Liechtenstein.