确定相对半透明度参数的感知度和可接受度值 - - 一项试点研究
Yale Cho1, Soni Prasad2, Judy Chia-Chun Yuan3
1Prosthodontic resident, Department of Restorative Dentistry, College of Dentistry, University of Illinois Chicago, Chicago, Illinois, USA.
概括
这项研究确定了陶牙科材料相对半透明度参数 (RTP) 的值. 这些发现有助于临床医生选择更好的审美效果的材料.
科学领域:
- 牙科材料科学 牙科材料科学
- 审美牙科 审美牙科
- 颜色科学是一种颜色科学.
背景情况:
- 评估陶牙修复的透光度对于实现自然外观美学至关重要.
- 相对透光度参数 (RTP) 是一种可量化的指标,但其临床相关性需要验证.
- 基于观察者的评估对于理解人类对半透明度差异的感知至关重要.
研究的目的:
- 确定陶材料相对半透明度参数 (RTP) 的感知度和可接受度值.
- 在模拟的临床条件下评估基于观察者的透光性判断.
- 测试零假设,即RTP值在感知度和可接受度值之间不存在差异.
主要方法:
- 制造五个半透明度级别的二氧化样本,以磁盘和前面的冠状.
- 计算RTP使用CIEDE2000色差公式与黑白背景.
- 通过随机调查向30名牙科临床医生展示配对皇冠的数字图像,以判断透光度差异 (可感知性) 和临床适当性 (可接受性).
主要成果:
- 发现Delta RTP (△RTP) 与可感知性和可接受性判断之间存在显著的关系 (p < 0.0001).
- 感知度值被确定在-17.5,而可接受度值被定义在12.6.
- △超过27的RTP值始终被认为是不同的,而低于12的值通常被认为是可以接受的,拒绝了零假设.
结论:
- 确定了对半透明感知和可接受性的临床相关RTP值.
- RTP被验证为一种有意义和可量化的工具,用于评估修复材料之间的透光度的审美差异.
- 这些发现对材料选择和牙修术中的临床决策有影响.
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