紫外线后固化时间对3D打印临时树脂复合材料的颜色稳定性,表面性能和转换的影响
L C de Sousa1, Alc Pereira2, Mrs Curinga3
1Lucas Cavalcante de Sousa, DDS, Department of Dentistry, Federal University of Rio Grande do Norte (UFRN), Lagoa Nova, Natal, Rio Grande do Norte, Brazil.
Operative dentistry
|August 27, 2024
概括
为3D打印的临时树脂优化紫外线后固化是关键. 较短的时间 (5-10分钟) 会产生更光滑的表面,而较长的时间 (10-15分钟) 会影响颜色稳定性和转换.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 3D打印树脂越来越多地用于临时的牙科修复.
- 紫外线后固化是影响这些树脂特性的一个关键步骤.
- 了解最佳的紫外线固化后持续时间对于材料性能至关重要.
研究的目的:
- 调查不同紫外线固化后时间对3D打印临时树脂颜色稳定性,表面特性 (湿透性和粗性) 和转化程度的影响.
- 为了确定最佳的紫外线固化后持续时间,以实现所需的材料特性.
主要方法:
- 在A2色调中制造了两个临时的3D打印树脂 (PriZma Bio Prov [PZ]和PrintaX AA TEMP [PX]).
- 标本经过UV后固化进行了0,5,10分钟和15分钟.
- 颜色稳定性,接触角度,表面粗度和转换程度分别使用色度计,滴法,光学造型计和FT-NIR进行了评估.
主要成果:
- 与PriZma Bio Prov (PZ) 相比,PrintaX AA TEMP (PX) 树脂表现出优越的色彩稳定性.
- 延长的紫外线后固化 (10-15分钟) 增加了接触角度,稳定了转换的程度.
- 中间的紫外线固化后持续时间 (5-10分钟) 导致两种树脂的表面光滑性得到改善.
结论:
- 紫外线固化后持续时间显著影响3D打印临时树脂的性能.
- 虽然长时间的紫外线照射会增强转换和可湿性,但它可能会对颜色稳定性产生负面影响.
- 5-10分钟的紫外线固化后期似乎是平衡表面光滑性和材料完整性的最佳时间.
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