在成长中的患者中,用于三维部区域叠加的自然参考结构
Yi Fan1,2, Bing Han3,2, Yungeng Zhang4
1Third Clinical Division, Peking University School and Hospital of Stomatology, Beijing, China.
BMC oral health
|September 8, 2023
概括
这项研究在3D部中确定了稳定的自然参考结构 (NRS),用于正牙评估. 这些NRS提供了与传统的2D方法可比的结果,提高了3D叠加精度.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 头骨面部成像技术 面部成像技术
- 生物机械分析分析
背景情况:
- 评估大变化需要可靠的叠加方法,这些方法是为2D成像而不是3D成像而建立的.
- 目前的3D方法缺乏对部的标准化自然参考结构.
研究的目的:
- 在正在成长的患者的3D部中识别自然参考结构 (NRS).
- 评估这些NRS对于3D上叠加的适用性.
- 为了比较3D NRS叠加与Björk的2D方法的一致性.
主要方法:
- 采用圆束计算机断层扫描 (CBCT) 扫描和正牙迷你螺丝作为初始参考.
- 采用刚性和非刚性注册来分析尾声位移.
- 根据相对于小螺丝的最小位移,确定了稳定的区域.
主要成果:
- 在CBCT扫描中,迷你螺丝被证实是稳定的参考点.
- 已确定的稳定NRS包括轨道下边缘,状孔区域,肌底下脊和硬 palates.
- 与Björk的2D方法相比,3D NRS叠加显示牙运动没有显著差异.
结论:
- 建立了稳定的3D自然参考结构,用于大上叠加.
- 拟议的NRS方法为3D分析提供了可靠的替代方案.
- 结果与传统的2D方法相美,增强了诊断能力.
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