Effect of various post-curing light intensities, times, and energy levels on the color of 3D-printed resin crowns.
| Autor: | Sahrir CD; School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan., Ruslin M; Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia., Lee SY; Department of Dentistry, Wan-Fang Hospital, Taipei Medical University, Taipei, Taiwan.; School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.; Center for Tooth Bank and Dental Stem Cell Technology, Taipei Medical University, Taipei, Taiwan., Lin WC; School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.; Department of Dentistry, Wan-Fang Hospital, Taipei Medical University, Taipei, Taiwan.; Center for Tooth Bank and Dental Stem Cell Technology, Taipei Medical University, Taipei, Taiwan. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of dental sciences [J Dent Sci] 2024 Jan; Vol. 19 (1), pp. 357-363. Date of Electronic Publication: 2023 Jul 13. |
| DOI: | 10.1016/j.jds.2023.07.008 |
| Abstrakt: | Background/purpose: Current 3D-printing technology has been widely used for creating dental resin restorations. This study aimed to evaluate the effect of light intensity, time, and energy post-curing on the surface color of 3D-printed resin crowns. However, the influences of post-curing parameters on the restoration after printing still need to be explored. Therefore, this project investigates the effect of post-cure conditions on resin color. Materials and Methods: Specimens from single-crown (SC) and pontic (PO) specimens underwent post-curing at various light intensities (105, 210, 420, 630, and 860 mW/cm2) for 5, 10, and 15 min. Specimens were observed at three predetermined points and measured using a commercial spectrophotometer that utilizes the CIE Lab∗ color space. Subsequently, samples were analyzed for color differences (ΔE). Results: ΔE color differences in evaluated samples were influenced by the light intensity, time, and energy post-curing. SC samples showed a significant color difference ( P < 0.05), with the lowest value at 5 min of 16 (860 mW/cm 2 ), while 10 and 15 min had a difference of 4 (210 mW/cm 2 ). PO samples exhibited a significant decrease in the color difference ( P < 0.05) at 5 and 10 min of 16 (860 mW/cm 2 ), and at 15 min of 12 (630 mW/cm 2 ). Conclusion: The results of this study indicate that exposing a resin crown to a high light intensity results in color stability and allows shorter post-curing times. (© 2023 Association for Dental Sciences of the Republic of China. Publishing services by Elsevier B.V.) |
| Databáze: | MEDLINE |
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