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  

Evaluation of the accuracy of three-dimensional data acquisition from liquid-interference surfaces assisted by a scanner head with a compressed airflow system

作　　者：徐昕恺 赵建江[2] 田素坤 刘中宁[2] 赵晓一[3] 赵晓波 江腾飞 陈晓军 马超 孙玉春 XU Xinkai;ZHAO Jianjiang;TIAN Sukun;LIU Zhongning;ZHAO Xiaoyi;ZHAO Xiaobo;JIANG Tengfei;CHEN Xiaojun;MA Chao;SUN Yuchun(Institute of Medical Technology,Peking University Health Science Center,Beijing 100191,China;Center of Digital Dentistry,Department of Prosthodontics,Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical Devices&NHC Key Laboratory of Digital Stomatology&Beijing Key Laboratory of Digital Stomatology&Key Laboratory of Digital Stomatology,Chinese Academy of Medical Sciences,Beijing 100081,China;Department of General Dentistry,Peking University School and Hospital of Stomatology,Beijing 100081,China;Shining 3D,Hangzhou 311258,China)

机构地区：[1]北京大学医学部医学技术研究院,北京100191 [2]北京大学口腔医学院·口腔医院口腔医学数字化研究中心,口腔修复教研室,国家口腔医学中心,国家口腔疾病临床医学研究中心,口腔生物材料和数字诊疗装备国家工程研究中心,国家卫生健康委口腔数字医学重点实验室,口腔数字医学北京市重点实验室,中国医学科学院口腔数字医学重点实验室,北京100081 [3]北京大学口腔医学院·口腔医院综合科,北京100081 [4]先临三维科技股份有限公司,杭州311258

出　　处：《北京大学学报(医学版)》2025年第1期121-127,共7页Journal of Peking University:Health Sciences

基　　金：国家重点研发计划(2023YFB4605400);国家自然科学基金(52105265);北京市自然科学基金-海淀原始创新联合基金(L232145);北京大学口腔医院临床新技术新疗法项目(PKUSSNCT-23B04)。

摘　　要：目的:定量评价集成压缩气流系统扫描头辅助口内三维扫描仪(intraoral 3D scanners,IOS)获取的液体干扰表面数据精度,为集成压缩气流系统扫描头的临床应用提供精度数据。方法:选择《YY/T 1818—2022牙科学口腔数字印模仪》中标准模型作为扫描对象,利用ATOS Q 12M得到三维扫描数据,作为扫描正确度评价的真值。基于现有扫描仪结构,研究设计了一种新型扫描方案,以解决液体导致IOS精度下降的问题。设计新型扫描头,并集成扫描系统与压缩气流系统,实现口内三维扫描仪在液体干扰表面的高精度数据采集。以常规标准扫描方式作为对照组,探究扫描镜头遮挡、气流、液体介质、新型扫描头对扫描过程及精度的影响,并设置4组实验,且每组扫描15次,以评价基于压缩气流系统扫描头辅助IOS获取液体干扰表面的精度数据。选用Elite和Primescan两款扫描仪作为精度数值的参考。结果:在正确度和精密度两方面评价中,被液体干扰表面的扫描精度显著下降[正确度:18.5(6.5)vs.38.0(6.7),P<0.05;精密度:19.1(8.5)vs.31.7(15.0),P<0.05];使用集成压缩气流系统的新型扫描头辅助口内三维扫描仪,扫描精度显著提升[正确度:22.3(7.6)vs.38.0(6.7),P<0.05;精密度:25.8(9.6)vs.31.7(15.0),P<0.05]。结论:集成压缩气流系统的扫描头可以辅助提高IOS液体干扰表面数据的精度。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 provide 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 surfaces where liquid-interference,such as saliva,might otherwise degrade scanning accuracy.The traditional 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 scanning 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 assessed 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 numerical 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;Precision:19.1(8.5)vs.31.7(15.0),P<0.05].The use of the new scanning head assisted by

关 键 词：口内三维扫描仪 压缩气流系统 精度 液体干扰表面 

分 类 号：R78[医药卫生—口腔医学]