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对牙可拆卸部分假牙框架的两种打印技术的评估.

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科学领域:

  • 生物材料工程 生物材料工程
  • 牙科假体 牙科假体
  • 添加剂制造 添加剂制造 添加剂制造

背景情况:

  • 三维 (3D) 打印越来越多地用于可拆卸部分假牙 (RPD) 框架.
  • 目前的方法包括直接金属打印和打印可造树脂用于随后的造.
  • 与传统方法相比,用于RPD框架的3D打印的准确性和精度需要进一步研究.

研究的目的:

  • 评估用于RPD框架制造的两个3D打印技术的准确性和精度.
  • 在RPD框架制造中比较选择性激光化 (SLM) 和数字光处理 (DLP).

主要方法:

  • 对于RPD框架设计,大骨件进行了数字化.
  • 每组使用SLM (用热加工) 和DLP (造树脂印刷) 制造了8个框架.
  • 扫描了框架,并使用计量软件和手动测量分析了与原始设计的偏差.

主要成果:

  • 在所有RPD框架中,SLM和DLP方法都表现出轻微的偏差.
  • 在SLM和DLP组之间没有发现精度的显著差异 (P=.986).
  • 与DLP组 (0.17mm) 相比,SLM组的精度显著更高,绝对偏差值较低 (0.13mm),与DLP组 (0.17mm) 相比 (P<.001).

结论:

  • 两种3D打印技术 (SLM和DLP) 均为RPD框架制造提供一致和可预测的结果.
  • 无论是SLM和DLP方法的准确性都是可比的,并且处于高水平.
  • 选择性激光化 (SLM) 为制造可拆卸部分假牙架构提供了卓越的精度.