新型乙烯基聚烯的尺寸精度与聚乙烯印象材料相比:一个体外研究
Moritz Waldecker1, Stefan Rues1, Peter Rammelsberg1
1Department of Prosthetic Dentistry, University Hospital Heidelberg, University of Heidelberg, 69120 Heidelberg, Germany.
Materials (Basel, Switzerland)
|September 14, 2024
概括
牙印记材料,乙烯基多 (VPS) 和聚乙烯 (PE),采用单步技术,在制造修复时显示出临床上可接受的准确性. 材料和技术都为支柱牙提供了精确的局部精度.
科学领域:
- 牙科 牙科 牙科 牙科
- 牙科材料科学 牙科材料科学
- 牙修复 牙修复 牙修复 牙修复 牙修复
背景情况:
- 准确的口内印记对于精确的牙修复制造至关重要.
- 乙烯基聚烯酸 (VPS) 和聚 (PE) 是常见的印记材料.
- 打印技术,包括单相和双相单相,影响精度.
研究的目的:
- 为了比较水友四功能VPS和PE打印材料的尺寸精度.
- 评估单相和双相单阶段打印技术对准确性的影响.
- 评估不同材料和技术组合的临床可接受性.
主要方法:
- 使用了一个模拟部分无牙下的参考模型.
- 不钢精密球测量了尺寸偏差.
- 评估了四个测试组:VPS单相,PE单相,VPS双相和PE双相.
- 全球和局部准确性 (真实性和精确性) 用ANOVA进行统计分析.
主要成果:
- 所有测试的距离都被低估了,十字弧距离显示了全球最高的不准确性 (-82μm到-109μm).
- 在所有组中,对支柱牙表面 (冠面真度<10微米,精度<12微米) 观察到极好的局部精度.
- 嵌入式表面表现出更高的不准确性 (准确度<15微米,精度<26微米).
结论:
- 所有评估的印记材料 (VPS,PE) 和技术 (单相,双相单相) 均为牙科模型提供了临床上可接受的准确性.
- 使用这些材料和技术,对支柱牙表面的局部精度是高度可靠的.
- 虽然总的准确性有局限性,特别是在横弧距离方面,但总体结果支持它们的临床应用.
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