数字下巴关系在不同闭合条件下的确定精度 - - 一项体外研究
Daniel Hellmann1,2, Felix M Knoch3, Stefan Repky4
1Department of Prosthodontics, University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany. daniel.hellmann@uni-wuerzburg.de.
Clinical oral investigations
|December 14, 2024
概括
数字口腔内扫描仪 (IOS) 提供了精确的牙关系登记. 虽然存在微小的偏差,但它们在临床上是微不足道的,证实了IOS适合日常实践.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 牙科技术 牙科技术
- 生物医学工程 生物医学工程
背景情况:
- 准确地记录下关系对于正牙诊断和治疗规划至关重要.
- 牙科模型的数字空间注册是现代正统牙科的一个关键程序.
研究的目的:
- 通过使用口腔内扫描仪 (IOS) 调查大和下模型数字空间注册的准确性.
- 评估牙发育阶段和缺陷类型对IOS下注册准确性的影响.
主要方法:
- 使用两种IOS类型 (Primescan和Trios4) 扫描了8对具有不同闭合和发育状态的模型.
- 重复进行口腔扫描,并使用桌面扫描仪 (Ceramill Map 600) 获得参考扫描.
- 线性和角度偏差是使用弧形特定的3D坐标系统和统计混合效应模型计算的.
主要成果:
- 与参考扫描相比,IOS注册显示了可量化的但在临床上可以忽略不计的3D偏差.
- 最大偏差包括Primescan (0.11 ± 0.02毫米) 的尾部翻译和Trios4 (0.08 ± 0.06毫米) 的腹部翻译.
- 观察到旋转偏差,最低的IOS精度记录在斜转换和横轴周围的旋转上.
结论:
- 检查的口腔内扫描仪 (Primescan和Trios4) 显示出足够的准确性,用于在临床牙矯正中确定数字关系.
- 牙和下巴错位的类型没有显著影响观察到的偏差的临床相关性.
- IOS口腔扫描提供了一种可靠的方法,用于日常正实践中的数字关系注册.
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