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Clin oral invest:CBCT是否可以用于牙科石膏模型数字化

2017-12-16 MedSci MedSci原创

基于软件的牙科计划需要数字化模型和常用的的锥束计算机断层扫描(CBCT)射线照相术。然而,购买专用型号数字化设备可能是昂贵且非必需的。本研究旨在评估从CBCT导出的数字模型和使用专用光学设备数字化的模型是否具有相当的准确性。

基于软件的牙科计划需要数字化模型和常用的的锥束计算机断层扫描(CBCT)射线照相术。然而,购买专用型号数字化设备可能是昂贵且非必需的。本研究旨在评估从CBCT导出的数字模型和使用专用光学设备数字化的模型是否具有相当的准确性。

材料与方法:共有20个石膏模型,8个CBCT和5个光学模型数字化。使用六个控制点和随后的迭代最近点匹配来叠加相应的模型。在所有模型中计算中位数距离。汇集每台扫描仪和模型数据。画出盒形图,配对t检验,Friedman检验和post-hoc Nemenyi检验进行统计比较。 p <0.05。

结果:所有的CBCT设备都可以进行石膏模型的数字化,但是没有达到专用模型数字化仪的准确度(p <0.001)。 CBCT和光学数字化铸件之间的中间距离为0.064±0.005mm。发现CBCT系统的定性差异(χ2= 78.07,p <0.001),提供特殊石膏铸造数字化模式的CBCT较好(p <0.05)。

结论:CBCT系统未能达到光学数字化仪的精确度,但在研究的范围内,准确性可以满足用于数字化和取模的要求。

原始出处:

Kathrin Becker, et al. Accuracy and eligibility of CBCT to digitize dental plaster casts. Clinical oral investigstions. 2017 December. doi:10.1007/s00784-017-2277-x

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    2018-05-07 小几洁
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    2017-12-18 xzw115
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    2017-12-16 131****1460

    学习了受益匪浅

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