Evaluation of the accuracy of three-dimensional data acquisition from liquid-inter-ference surfaces assisted by a scanner head with a compressed airflow system
10.19723/j.issn.1671-167X.2025.01.018
- VernacularTitle:集成压缩气流系统扫描头辅助获取液体干扰表面三维数据精度评价
- Author:
Xinkai XU
1
;
Jianjiang ZHAO
;
Sukun TIAN
;
Zhongning LIU
;
Xiaoyi ZHAO
;
Xiaobo ZHAO
;
Tengfei JIANG
;
Xiaojun CHEN
;
Chao MA
;
Yuchun SUN
Author Information
1. 北京大学医学部医学技术研究院,北京 100191
- Publication Type:Journal Article
- Keywords:
Intraoral 3D scanners;
Compressed airflow system;
Accuracy;
Liquid-interference surfaces
- From:
Journal of Peking University(Health Sciences)
2025;57(1):121-127
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To quantitatively evaluate the accuracy of data obtained from liquid-interference surfaces using an intraoral 3D scanner(IOS)integrated with a compressed airflow system,so as to pro-vide clinical proof of accuracy for the application of the compressed airflow system-based scanning head in improving data quality on liquid-interference surfaces.Methods:The study selected a standard model as the scanning object,adhering to the"YY/T 1818-2022 Dental Science Intraoral Digital Impression Scanner"guidelines,a standard that defined parameters for intraoral scanning.To establish a baseline for accuracy,the ATOS Q 12M scanner,known for its high precision,was used to generate true reference values.These true values served as the benchmark for evaluating the IOS performance.Building on the design of an existing scanner,a new scanning head was developed to integrate with a compressed airflow system.This new design aimed to help the IOS capture high-precision data on sur-faces where liquid-interference,such as saliva,might otherwise degrade scanning accuracy.The tradi-tional scanning method,without airflow assistance,was employed as a control group for comparison.The study included five groups in total,one control group and four experimental groups,to investigate the effects of scanning lens obstruction,airflow presence,liquid media,and the use of the new scan-ning head on scanning process and accuracy.Each group underwent 15 scans,generating ample data for a robust statistical comparison.By evaluating trueness and precision in each group,the study as-sessed the impact of the compressed airflow system on the accuracy of IOS data collected from liquid-interference surfaces.Additionally,we selected Elite and Primescan scanners as references for numeri-cal accuracy values.Results:The scanning accuracy on liquid-interference surfaces was significantly reduced in terms of both trueness and precision[Trueness:18.5(6.5)vs.38.0(6.7),P＜0.05;Preci-sion:19.1(8.5)vs.31.7(15.0),P＜0.05].The use of the new scanning head assisted by the com-pressed airflow system significantly improved the scanning accuracy[Trueness:22.3(7.6)vs.38.0(6.7),P＜0.05;Precision:25.8(9.6)vs.31.7(15.0),P＜0.05].Conclusion:The scanning head based on the compressed airflow system can assist in improving the accuracy of data obtained from liquid-inter-ference surfaces by the IOS.
