无牙颌种植传统与数字化印模精度的体外比较研究  

Accuracy of Conventional versus Digital Implant Impressions in Edentulous Models in Vitro

作　　者：李超越 巢家瑞 王振宇 陈度 刘飞 沈颉飞[1] LI Chaoyue;CHAO Jiarui;WANG Zhenyu;CHEN Du;LIU Fei;SHEN Jiefei(State Key Laboratory of Oral Diseases&National Clinical Research Center for Oral Diseases,Department of Prosthodontics Ⅱ,West China School of Stomatology,Sichuan University,Chengdu 610041,China)

机构地区：[1]口腔疾病研究国家重点实验室,国家口腔疾病临床医学研究中心,四川大学华西口腔医院修复Ⅱ科,四川成都610041

出　　处：《口腔医学研究》2022年第11期1026-1032,共7页Journal of Oral Science Research

基　　金：国家科技支撑计划项目课题(编号:2015BAH13F02);国家自然科学基金(编号:82071149)。

摘　　要：目的:探讨上下无牙颌模型植入不同数量种植体后,使用传统印模法及数字化印模法取模的精度差异。方法:对上下无牙颌标准模型植入2颗、4颗、6颗种植体,使用传统印模法和数字化印模法取模后,利用逆向工程软件和三坐标测量机,从表面、三维线性、角度3个方面分析两种方法取模准确度及精密度差异。结果:(1)不同数量上下颌种植标准模型中,使用数字化印模法的准确度在至少一个方面上高于传统印模法。(2)不同数量上下颌种植标准模型中,使用数字化方法取模精密度更高。结论:本实验条件下,无牙颌种植模型使用数字化印模方法取模精度更高。Objective:To investigate the difference of accuracy between conventional and digital impression methods with different numbers of implants in the maxillary and mandibular edentulous models.Methods:After two,four,and six implants were placed in the maxillary and mandibular edentulous standard models,both conventional impression and digital impression were made.The differences in the trueness and precision between two methods were analyzed in terms of surface property,three-dimensional linearity,and angularity using reverse engineering software and a three-coordinate measuring machine.Results:(1)The trueness of digital impression method was higher than that of conventional impression method in at least one aspect for maxillary and mandibular standard models with different number of implants.(2)The precision of the digital method was higher for maxillary and mandibular standard models with different number of implants.Conclusion:Within the limit of this experimental condition,the accuracy of digital implant impressions was higher in edentulous arch.

关 键 词：无牙颌 种植修复 印模 数字化 精度 

分 类 号：R783.6[医药卫生—口腔医学]