Abstract
The aim of this in vitro study is to investigate the bonding properties of a 3D-printable permanent composite material in comparison to milled composite materials. The tested materials are 3D-printed BEGO VarseoSmile Crown (plus) (VA1_ab, VA1_nt, VA2_ab, VA2_nt), Vita Enamic (EN1, EN2), and 3M Lava Ultimate (UL1, UL2) (N = 64;n = 8). For this purpose, all crowns are luted to polymer tooth stumps #46 (FDI) using dual-curing luting composite, strictly according to the manufacturer's instructions. VA1_ab and VA2_ab are additionally airborne-particle abraded. 4 groups (VA2_ab, VA2_nt, EN2, UL2) are artificially aged (1,200,000 cycles, 50 N, 10,000 thermocycles), whereby no specimen has failed. All 64 specimens undergo pull-off testing until retention loss. The mean forces of retention-loss is 786.6 +/- 137.6 N (VA1_nt, *), 988.6 +/- 212.1 N (VA2_nt, *, dagger), 1223.8 +/- 119.2 N (VA1_ab, dagger, double dagger;), 1051.9 +/- 107.2 N (VA2_ab, *, dagger), 1185.9 +/- 211.8 N (EN1, dagger, double dagger), 1485.0 +/- 198.2 N EN2, double dagger), 1533.8 +/- 42.4 N (UL1, double dagger), and 1521.8 +/- 343.4 N (UL2, double dagger) (one-way ANOVA (Scheffe method);p < 0.05;*, dagger, double dagger: group distribution). No characteristic failure modes can be detected. In conclusion, all of the pull-off forces reflect retention values that seem to be sufficiently high for clinical use. Additional airborne-particle abrasion of VA does not result in significantly better retention but can be recommended.
| Dokumententyp: | Zeitschriftenartikel |
|---|---|
| Fakultät: | Medizin |
| Themengebiete: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit |
| Sprache: | Englisch |
| Dokumenten ID: | 114382 |
| Datum der Veröffentlichung auf Open Access LMU: | 02. Apr. 2024, 08:01 |
| Letzte Änderungen: | 02. Apr. 2024, 08:01 |
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