在测量3D变化时,测量指标对数据稳定性和可重复性的影响
Saoirse O'Toole1, Niknaz Rostrami1, David Bartlett1
1Centre for Clinical, Oral and Translational Sciences, King's College London Faculty of Dental, Oral and Craniofacial Sciences, London, UK.
Journal of dentistry
|October 24, 2025
概括
最大点损失和平均轮损失为牙磨损提供了可靠的测量,与体积测量不同,体积测量显示出更高的可变性,特别是复杂的多表面磨损.
科学领域:
- 牙科生物材料和生物力学
- 数字牙科和成像数字牙科
背景情况:
- 牙磨损显著改变牙表面的地形,需要精确的分析方法.
- 连续的口内扫描为量化牙磨损的地形变化提供了一种手段.
研究的目的:
- 调查变化系数 (CoV) 和三个地形变化指标的一致性:体积损失,平均形状损失和最大点损失.
- 为了在单面和多面磨损场景中比较这些措施.
主要方法:
- 在36个类型牙上产生轻度,中度和严重的磨损,模拟非性宫病变和 palatal / incisal 侵蚀.
- 使用两个软件包分析了序列性口内扫描之间的差异,通过相关性,配对t测试和布兰德-阿尔特曼图表评估了Cov和软件间协议.
主要成果:
- 平均概况和最大积分损失呈现出低Cov和软件之间的良好一致性.
- 体积测量显示Cov的高,特别是多表面磨损 (高达8.53%),与单表面磨损 (0.53%) 相比.
- 虽然测量高度相关 (ICC>0.98),但多表面体积分析显示了统计差异和低一致性.
结论:
- 最大点损失和平均配置损失表明在不同的测量平台上具有一致的重复性和一致性.
- 体积损失测量具有更高的可变性和方法挑战,特别是随着磨损复杂度和多表面参与度的增加.
- 需要进一步的研究来提高体积测量的稳定性,以准确量化牙磨损.
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