Temizci Tuğba, Kölüş Türkay
Department of Prosthodontics, Faculty of Dentistry, Karamanoğlu Mehmetbey University, 70200 Karaman, Turkey.
Department of Restorative Dentistry, Faculty of Dentistry, Karamanoğlu Mehmetbey University, 70200 Karaman, Turkey.
Biomimetics (Basel). 2024 Jul 10;9(7):420. doi: 10.3390/biomimetics9070420.
In resins produced with a 3D printer, the printing parameters affect the properties of the restoration produced. This study examined the effect of the printing angle and post-curing time on the optical properties of temporary restorations. A total of 135 disk-shaped Formlabs temporary resins (10 × 2 mm) were produced at three different printing angles (0, 45, and 90 degrees) and post-cured for three different times (20, 40, and 60 min) (n = 15). Color and translucency measurements were taken for each group with a spectrophotometer (VITA Easyshade V). The ΔE values between printing angles and curing times influence each other. The highest color change was observed in the groups produced with a 90° printing angle. Considering the post-curing times, the highest color change was observed in the groups cured for 40 min. Increasing the curing time from 20 to 40 min decreases the translucency, whereas further increasing the curing time does not significantly affect the translucency. In terms of the impact on the translucency caused by the printing angles, 0° exhibited a lower translucency compared to other printing angles. During the 3D printing of temporary prostheses, both printing angles and post-curing times can affect their optical properties.
在3D打印机生产的树脂中，打印参数会影响所生产修复体的性能。本研究考察了打印角度和后固化时间对临时修复体光学性能的影响。共制作了135个圆盘形Formlabs临时树脂（10×2毫米），设置了三个不同的打印角度（0、45和90度），并进行了三种不同时间（20、40和60分钟）的后固化处理（n = 15）。使用分光光度计（VITA Easyshade V）对每组进行颜色和透明度测量。打印角度和固化时间之间的ΔE值相互影响。在90°打印角度生产的组中观察到最高的颜色变化。考虑后固化时间，在固化40分钟的组中观察到最高的颜色变化。将固化时间从20分钟增加到40分钟会降低透明度，而进一步增加固化时间对透明度没有显著影响。就打印角度对透明度的影响而言，与其他打印角度相比，0°的透明度较低。在临时修复体的3D打印过程中，打印角度和后固化时间都会影响其光学性能。
