IADR General Session
R. HECHT, E. WANEK, R. GUGGENBERGER, G. RAIA, M. LUDSTECK, and C.A. WIEDIG, 3M ESPE AG, Seefeld, Germany
Thursday, July 15, 2010: 9 a.m. - 10:30 a.m.
Location: Room 113 (CCIB)
Objectives: The purpose of this in-vitro investigation was to compare wear properties of different self-adhesive resin cements and a composite filling material in the ACTA abrasion test.
Methods: Self-adhesive resin cements tested were Maxcem™Elite (MAX,Kerr), iCEM™ (ICM, Heraeus Kulzer), Clearfil™SA Cement (CSA, Kuraray), G-CEM Automix (GCM, GC), RelyX™Unicem Clicker™ (RXU, 3M ESPE) and self-adhesive experimental resin cement (EXP, 3M ESPE). Filling composite included in the study was Spectrum TPH (TPH, Dentsply).
Wear resistance was determined by the ACTA abrasion test following the ACTA protocol in a millet seed slurry for 200.000 cycles. Self-adhesive resin cements were examined in the light-curing (lc) and the self-curing (sc) mode, while Spectrum TPH was only light-cured. Materials were cured following the manufacturers' instructions and finally stored for 14 days at 36°C in deionized water before running the test.
Data obtained were analyzed using Multiple Range Test (Fisher's LSD; p<0.05).
| TPH | GCM | CSA | MAX | ICM | RXU | EXP |
| Wear lc [µm] | 49.9±6.3b | 56.6±3.8c | 71.8±2.7d | 71.4±2,0d | 85.1±2.8e | 58.3±1.7c | 45.9±2.5a |
| Wear sc [µm] | n.a. | 59.5±1.8g | 78.3±2.0i | 77.6±3.2i | 106.4±2.2j | 65.5±3.0h | 56.7±1.0f |
Results: Statistical analysis revealed significant differences between the tested materials (see table). Values in one row with different superscript characters are statistically different.
Conclusion: The self-adhesive experimental resin cement showed significantly lower wear in both curing modes compared to all other tested self-adhesive resin cements and the filling composite Spectrum TPH.
See more of: Bonding, Wear, and Fit
See more of: Dental Materials 3: Ceramic-based Materials and Cements
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