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与口腔内扫描仪的反向扫描技术和传统的印记技术的比较

Pavel Hyspler¹, Petra Urbanová², Tatjana Dostalova³

¹Head, Dental Department, The Military University Hospital Prague, Prague, Czech Republic; and PhD student, Charles University, 1st Medical Faculty, Prague, Czech Republic.

The Journal of prosthetic dentistry

|October 1, 2024

概括

反向扫描技术 (RST) 提供了一个可接受的数字替代方案,用于假肢的传统印记. 由于准确性问题,不建议使用口腔内扫描仪对植入物支持假肢进行数字化.

科学领域:

牙科假牙是指牙科的假牙.
数字牙科数字牙科
生物材料科学是生物材料的科学.

背景情况:

口腔内扫描仪 (IOS) 具有优势,但由于融合错误,对于广泛的牙或植入物支假体而言,其准确性受到限制.
准确的数字印记对于制造精确的假牙至关重要.

研究的目的:

为了比较反向扫描技术 (RST) 与使用口腔内扫描仪的传统印记方法的准确性.
评估RST在牙科假肢中的体外和体内适用性.

主要方法:

该研究涉及体外和体内扫描参与者的牙.
使用口腔内扫描仪,反向扫描技术 (RST) 和传统的 splinted 印记进行了多次扫描.
使用一种新的金字塔替代方法和Procrustes分析来评估实验室和口腔内扫描仪生成的标准特色语言 (STL) 文件的准确性.

主要成果:

在体外,反向扫描技术 (RST) 造 (中位数6.2微米) 和传统印记造 (中位数6.5微米) 显示了可比的精度.
内口扫描仪 (IOS) 造组表现出显著的变化 (中位数为5.8微米,最高为41.2微米).
在体内,RST口内扫描 (中位数9.5微米) 与IOS口内扫描 (中位数10.9微米) 相似.

结论:

反向扫描技术 (RST) 是一种可行的数字替代传统牙科印记方法.
由于潜在的不准确性,不建议使用口腔内扫描仪 (IOS) 来创建植入式假肢的3D造.
实验室扫描仪优先于口内扫描仪,用于数字化精密组件,如可扫描的植入物模拟器或固体索引.

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