内口扫描持续时间对数据准确性的影响
Cunliang Zhang1, Xin Zhan2, Fanghuan Wang2
1Resident and Master's Degree Candidate, Department of Prosthodontics, Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, PR China.
The Journal of prosthetic dentistry
|December 7, 2023
概括
扫描时间不会影响口内扫描仪 (IOS) 在60-180秒之间的准确性. 然而,过快扫描 (30秒) 显著降低了牙弧数据的真实性和精度.
科学领域:
- 数字牙科数字牙科
- 牙科材料科学 牙科材料科学
- 生物医学工程 生物医学工程
背景情况:
- 口腔内扫描仪 (IOSs) 在牙科中越来越多地被使用,与改善的临床结果和患者满意度有关.
- 虽然IOS的准确性已经确立,但扫描时间对数据质量的具体影响仍未得到充分研究.
研究的目的:
- 评估不同口腔内扫描时间和数字牙科模型的结果准确性之间的体外关系.
- 为了确定扫描时间是否会影响口内扫描仪获得的数据的真实性和精度.
主要方法:
- 两名操作人员使用口腔内扫描仪 (TRIOS 3) 对一个石膏件进行了扫描,时间分别为30,60,90,120和180秒.
- 对每个扫描持续时间的真实性和精确性进行了评估,每组10次复制. 用三向ANOVA分析数据,比较牙门的前后区域.
主要成果:
- 内部口腔扫描仪 (IOS) 的性能在操作人员之间是一致的.
- 与所有其他组相比,30秒扫描组的真实性和精度明显较低 (P<.001).
- 扫描精度在后牙弧区域低于前牙弧区域 (P<.001),无论扫描持续时间.
结论:
- 从60秒到180秒的口腔内扫描持续时间不会显著影响获得的数字数据的准确性.
- 加速的口内扫描,特别是30秒后,会对数据准确性产生不利影响,损害真实性和精度.
- 牙弧区域影响精度,后部区域不如前部区域精确.
相关概念视频
01:11Statistical Analysis: Overview
When we take repeated measurements on the same or replicated samples, we will observe inconsistencies in the magnitude. These inconsistencies are called errors. To categorize and characterize these results and their errors, the researcher can use statistical analysis to determine the quality of the measurements and/or suitability of the methods.
One of the most commonly used statistical quantifiers is the mean, which is the ratio between the sum of the numerical values of all results and the...
One of the most commonly used statistical quantifiers is the mean, which is the ratio between the sum of the numerical values of all results and the...
01:18Effects of EDTA on End-Point Detection Methods
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...
01:12Adjusting a Traverse
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...