Abstract
Aim: The purpose of this investigation was to evaluate the impact of print layer thickness and post-curing method on the degree of conversion (DC) of a three-dimensional (3D) print material for temporary restorations. Materials and methods: 120 specimens of the resin material NextDent C&B were additively manufactured in three different print layer thicknesses (25 mu m, 50 mu m, and 100 mu m) using a DLP printer, and post-cured by either Labolight DUO (LL), Otoflash G171 (OF), LC-3DPrint Box (PB) or PCU LED (PCU). Each subgroup contained 10 specimens. Raman spectra were measured for the liquid state of the resin (n = 10), directly after printing (R-print) and after post-curing (R-cured). DC and Delta DC were calculated. The data were statistically analyzed using the Kolmogorov-Smirnov test, the general linear model analysis together with partial eta-squared (eta(2)(P)), Kruskal-Wallis, and Mann-Whitney U tests (P < 0.05). Result: Specimens post-cured by OF showed the highest Delta DC, followed by specimens post-cured by PB, PCU, and LL (P < 0.001). Post-curing by PB, PCU, and LL resulted in the same Delta DC value range (P = 0.076 to 0.209). The print layer thicknesses of 100 mu m and 50 mu m (P = 0.931) showed higher Delta DC than the print layer thickness of 25 mu m (P < 0.001). Conclusion: The choice of the post-curing method has a high impact on the DC of the tested 3D print material followed by the specific print layer thickness. Overall, specimens post-cured by OF showed the highest DC and Delta DC values.
| Dokumententyp: | Zeitschriftenartikel |
|---|---|
| Fakultät: | Medizin |
| Themengebiete: | 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit |
| ISSN: | 1463-4201 |
| Sprache: | Englisch |
| Dokumenten ID: | 79205 |
| Datum der Veröffentlichung auf Open Access LMU: | 15. Dez. 2021, 14:47 |
| Letzte Änderungen: | 15. Dez. 2021, 14:47 |
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