关于数字植入物印象准确性的更新:基于坐标的分析
The International journal of prosthodontics
|March 27, 2024
概括
最新的口内扫描仪 (IOS) 显示数字植入物印象准确度有所提高,但在扫描路径上偏差仍在增加. 在Trios 4和Trios 5模型之间没有发现显著的精度改进.
科学领域:
- 牙科技术 牙科技术
- 数字牙科数字牙科
- 植入物学 植入物学
背景情况:
- 准确的数字植入物印象对于成功的假肢康复至关重要.
- 内口扫描仪 (IOS) 越来越多地用于捕获牙弧数据.
- 评估新IOS的传输精度对于临床采用至关重要.
研究的目的:
- 评估和比较最新的口内扫描仪 (IOS) 的传输准确度,以获得数字植入物印记.
- 在临床模型设置中使用基于坐标的方法分析偏差.
- 更新现有的关于植入牙科IOS性能的数据.
主要方法:
- 四个口腔内扫描仪 (Medit i700,Dentsply Sirona Primescan,3Shape Trios 4和Trios 5) 进行了测试.
- 一个植入物主模型与四个腔植入物被扫描十次每一个设备.
- 根据CT生成的参考数据集计算了植入物-位接口点 (IAIP) 的3D偏差.
主要成果:
- 扫描仪的整体真实性和精度偏差不同,Primescan显示的平均偏差最低 (88 ± 47 μm).
- 在所有测试IOS的扫描路径上,准确性普遍下降.
- 对于一个植入物位置,Primescan和Trios 4之间注意到了显著的真实差异;没有发现显著的精度差异.
结论:
- 最新的IOS显示了数字植入物印象的增强传输精度.
- 沿扫描路径积累的偏差仍然是一个挑战.
- 在Trios 4和Trios 5模型之间观察到有限的精度创新.
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