评估3D面部扫描在3D数字工作流程中的整合,使用放射标记和代的最接近点算法
Mohamed Elshewy1, Geoffrey A Thompson1, Hongseok An2
1Department of Restorative Science, Dental College of Georgia at Augusta University, Augusta, Georgia, USA.
概括
与形束计算断层扫描 (CBCT) 扫描相比,放射性遮标记提供了一种更准确的方法,用于将3D面部扫描与形束计算断层扫描 (CBCT) 合并,而不是代的最接近点 (ICP) 算法. 这提高了数字牙科工作流程的精度.
科学领域:
- 牙科 牙科是指牙科的专业.
- 医疗成像医学成像
- 计算机辅助设计/制造 (CAD/CAM) 技术
背景情况:
- 三维 (3D) 面部扫描集成对于现代数字牙科工作流程至关重要,有助于治疗规划和审美评估.
- 精确的合并3D面部扫描与束计算机断层扫描 (CBCT) 扫描是必不可少的,但会带来技术上的挑战.
- 只有有限的数据可以比较不同3D面部扫描和CBCT整合方法的准确性.
研究的目的:
- 为了比较整合3D面部扫描与CBCT扫描的准确性,使用代式最接近点 (ICP) 算法与放射性不透明 (RO) 标记技术相比.
- 评估RO标记器的可靠性,以提高3D面部和CBCT扫描叠加的精度.
- 确定数字牙科工作流集成最准确的方法.
主要方法:
- 一项前性临床研究涉及15名患者,他们接受了CBCT和3D面部扫描 (在休息和微笑位置).
- 整合CBCT (DICOM) 和3D面部扫描 (STL) 数据使用Exocad软件通过两种方法:RO标记器对齐和ICP算法.
- 两种整合方法之间的精度的统计比较使用对 t 试验 (α = 0.05).
主要成果:
- 放射性不透明 (RO) 标记技术实现了0.13至0.15毫米之间的平均融合值.
- 代的最接近点 (ICP) 算法产生了从1.47到2.0毫米的平均合并值.
- 与ICP算法相比,RO标记方法显示了统计学上显著的更高准确度 (p < 0.001).
结论:
- 将3D面部扫描与CBCT使用放射性斑标记器合并,与ICP算法相比,提供了更高的真实性.
- RO标记技术为提高数字牙科工作流程的整合精度提供了可靠的替代方案.
- 这种方法在需要精确的面部标志保护的应用中尤为有益.
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