不同的治疗后方法对3D打印树脂对牙科模型转换程度的影响
Scott Kirby1, Igor Pesun1, Anthony Nowakowski2
1Graduate Prosthodontics Program, Department of Restorative Dentistry, Dr. Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3E 0W2, Canada.
Polymers
|February 24, 2024
概括
更便宜的后固化装置可以有效地固化3D打印的牙树脂,实现与制造商推的设备相比的化学性能 (转换程度). 较长的固化时间显著提高了树脂的转化率.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 生物材料工程 生物材料工程
背景情况:
- 3D打印树脂越来越多地用于牙科模型.
- 后固化对于优化这些树脂的化学性能和性能至关重要.
- 评估具有成本效益的后固化替代品对于广泛采用至关重要.
研究的目的:
- 研究各种后固化单元对3D打印牙的转换度 (DC) 的影响.
- 与制造商推的选项相比,评估更便宜的后固化装置的可行性.
- 确定最佳的固化后时间,以实现最大的直流.
主要方法:
- 使用液晶打印机和MSLA牙科建模树脂制造45个树脂样本.
- 随机将样品分为四组,用不同的单元进行后固化:Phrozen Cure V2,商用紫外线LED单元,自制紫外线LED单元和色素光源.
- 使用富里埃变换红外光谱法 (FTIR) 测量转换的程度.
主要成果:
- 在45分钟内,Phrozen Cure V2单元实现了最高的平均转换度 (69.6%).
- 特里亚德2000VLC治疗装置的平均直流在15分钟 (66.2%) 是最低的,自制装置的平均直流在45分钟 (68.2%) 是最低的.
- 不同类型的光固化装置之间没有发现DC的统计学上显著差异,但更长的固化时间 (45分钟与15分钟) 显著增加了DC (p = 0.029).
结论:
- 不同的后固化装置,包括更便宜的替代品,可以实现可比的3D打印牙树脂的转换程度.
- 增加光固化后的时间显著提高了转换的程度,无论使用的光固化装置.
- 对于牙科应用来说,具有成本效益的后固化解决方案是可行的,只要使用足够的固化时间.
相关概念视频
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