在牙科研究中评估视觉值和颜色指标:一项探索性研究
Sascha Hein1, Michael Zangl2, Tobias Graf3
1School of Design, University of Leeds, Leeds, UK.
概括
这项研究发现,感知度 (PT) 和可接受度 (AT) 值因设备而异,需要特定于设备的值. 更简单的∆E*ab色差方程在牙科色度测量中被证明比∆E00和∆E94等复杂度量更有效.
科学领域:
- 牙科材料科学 牙科材料科学
- 测色仪的颜色测量方法
- 视觉感知 视觉感知 视觉感知
背景情况:
- 精确的牙颜色测量对于美学修复至关重要.
- 现有的色差方程和测量设备具有不同的性能.
- 了解感知度 (PT) 和可接受度值 (AT) 是临床应用的关键.
研究的目的:
- 为了评估多种颜色测量设备的感知度 (PT) 和可接受度值 (AT).
- 使用专家视觉数据评估三个颜色差异方程 (∆E*ab, ∆E00和 ∆E94) 的性能.
- 在牙科色度测量中比较不同颜色差异指标的有效性.
主要方法:
- 扩展了一个已发表的视觉数据集,使用x-rite MetaVue光谱仪和∆E94分析.
- 在26对牙样本对上使用了视觉缩放的大小估计.
- 使用无模型方法确定PT和AT,并使用STRESS和VIAS指标分析设备性能.
主要成果:
- 感知度和可接受度值在各种设备和颜色差异方程中存在显著差异.
- ∆E*ab显示出优异的视觉和乐器一致性 (STRESS 18-36,VIAS 64-82%),表现优于∆E00 (STRESS 23-32,VIAS 68-77%) 和∆E94 (STRESS 24-42,VIAS 58-76%). ∆E*ab显示出优异的视觉和乐器一致性 (STRESS 18-36,VIAS 64-82%),表现优于∆E00 (STRESS 23-32,VIAS 68-77%),表现优于∆E94 (STRESS 24-42,VIAS 58-76%).
- 在受控条件下,x-rite MetaVue 的性能很好,但不适合临床研究.
结论:
- 由于观察到的变异性,需要为PT和AT设置特定设备的值.
- ∆E*ab与∆E00和∆E94相比,对于牙色度测量来说是一个更有效和更简单的度量.
- 这项研究为选择牙科中适当的颜色测量设备和指标提供了宝贵的见解.
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