弹性辅助装置对无牙颌种植数字化印模准确性影响的研究  

The effect of elastic auxiliary devices on the accuracy of digital impressions of edentulous jaw implants

作　　者：王涵 季中倩 李林[1,2,3] 胡建 WANG Han;JI Zhongqian;LI Lin;HU Jian(Department of Prosthodontics,The Affiliated Stomatological Hospital of Nanjing Medical University,Nanjing 210029,China;State Key Laboratory Cultivation Base of Research,Prevention and Treatment for Oral Diseases,Nanjing 210029,China;Jiangsu Province Engineering Research Center of Stomatological Translational Medicine,Nanjing 210029,China;Stomatological Department of Taizhou People's Hospital,Taizhou 225300,China)

机构地区：[1]南京医科大学附属口腔医院修复科,江苏南京210029 [2]口腔疾病研究与防治国家级重点实验室培育建设点,江苏南京210029 [3]江苏省口腔转化医学工程研究中心,江苏南京210029 [4]泰州市人民医院口腔科,江苏泰州225300

出　　处：《口腔生物医学》2025年第1期34-38,60,共6页Oral Biomedicine

基　　金：江苏省科教能力提升工程——江苏省研究型医院(YJX-YYJSDW4);江苏省医学创新中心(CXZX202227)。

摘　　要：目的:评估采集无牙颌种植数字化印模时使用弹性辅助装置对种植体扫描精确度的影响。方法:打印下颌无牙颌种植修复模型(包含4颗种植体),使用D2000台式扫描仪进行模型扫描作为对照组,再采用ICam4D立体摄影测量技术(SPG组)、标准扫描杆(cIOS组)、带有横向延伸装置的扫描杆(mIOS组)、带有弹性辅助装置的扫描杆(eIOS组)和附加树脂块的扫描杆(rIOS组)等5种不同的口内扫描技术进行数字化印模制取作为实验组,并在EXOCAD软件中生成替代体数据。将实验组分别和对照组的替代体数据进行最佳拟合对齐来计算5种印模技术的3D偏差。采用Kruskal-Wallis检验分析5种印模技术之间正确度和精密度的均方根(RMS)3D差异。结果:在正确度方面,SPG组的偏差最小,且显著优于cIOS组(P<0.05)。在精密度方面,cIOS组的偏差显著高于其他4组(P<0.01)。结论:使用弹性辅助装置可以降低口内扫描的总体3D偏差,立体摄影测量技术显示出最佳的正确度和精密度,满足无牙颌种植数字化印模的准确性需求。Objective:To evaluate the effect of a elastic auxiliary devices on the accuracy of full-arch scans captured with intraoral scanners(IOS).Methods:A model of the mandibular edentulous jaw implant restoration(containing 4 implants) was 3D printed,and the model was scanned using a D2000 desktop scanner as control group,followed by 5 different intraoral scanning techniques:ICam4D stereophotogrammetry(SPG group),standard scan bodies(cIOS group),scan bodies with transverse extension device(mIOS group),scan bodies with elastic assist device(eIOS group),and scan bodies with additional resin block(rIOS group) were subjected to digital impression making as experimental group,and the alternative body data were generated in EXOCAD software.Best-fit alignments of the experimental group separately and the reference data of the alternative body data were performed to calculate the 3D deviations of the five different intraoral scanning techniques.The Kruskal-Wallis test was used to analyze the root-mean-square(RMS) 3D differences in trueness and precision between the five impression techniques.Results:For trueness,the SPG group showed the smallest deviation and was significantly superior to the cIOS group(P<0.05).For precision,the cIOS group had a significantly larger deviation than the other four groups(P<0.01).Conclusions:The use of elastic auxiliary devices reduces the overall 3D bias of intraoral scanning,and stereophotogrammetry techniques show optimal trueness and precision,both of which meet the accuracy needs of digital impressions for edentulous jaw implants.

关 键 词：无牙颌种植 口内扫描 立体摄影测量技术 辅助装置 数字化印模 

分 类 号：R783.4[医药卫生—口腔医学]