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后聚合类型和时间对3D打印中间树脂曲强度和尺寸稳定性的影响
Nathalia R Silva1, Fernanda G de G Moreira2, Ana B de C Cabral1
1Researcher, Department of Dentistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil.
The Journal of prosthetic dentistry
|September 2, 2023
概括
紫外线 (UV) 后聚合增强了3D打印中间树脂的柔性强度. 微波后聚合方法导致3D打印临时牙修复的尺寸不稳定性更大.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 牙科材料 牙科材料
背景情况:
- 3D打印的中间树脂的机械强度尚不清楚.
- 打印参数显著影响树脂的性能.
- 对于3D打印临时树脂的标准化后聚合物化的证据有限.
研究的目的:
- 评估后聚合类型 (UV,带水的微波,没有水的微波) 对屈曲强度的影响.
- 评估后聚合时间对屈曲强度和尺寸稳定性的影响.
- 确定3D打印中间树脂的最佳后聚合策略.
主要方法:
- 使用立体石刻法 (SLA) 打印288个树脂棒的3D打印.
- 应用三个后聚合方法 (UV,MWA,MW) 用于不同的持续时间.
- 根据ISO标准测量屈曲强度 (MPa) 和尺寸稳定性 (mm).
- 使用双向ANOVA,克鲁斯卡尔-瓦利斯试验和韦布尔分析进行分析.
主要成果:
- 与微波方法相比,紫外线 (UV) 后聚合产生了明显更高的屈曲强度.
- 紫外线组显示出优越的特征强度,而8分钟的微波组显示出最高的韦布尔模量.
- 微波后聚合组在维度稳定性方面表现出更大的差异.
结论:
- 紫外线 (UV) 后聚合是增强3D打印中间树脂曲强度的最有效方法.
- 微波后聚合方法导致3D打印临时树脂的尺寸不稳定性增加.
- 标准化后聚合协议对于优化3D打印临时牙科材料的性能至关重要.
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