上颌腭部软组织和全牙列数字化印模的准确度研究  

An in vivo evaluation of the accuracy of 3Shape TRIOS for the whole maxilla

作　　者：甘宁 孙健[1] 邢国芳[1] 焦婷[1] GAN Ning;SUN Jian;XING Guofang;JIAO Ting(Department of Prosthodontics,Ninth People＇s Hospital,Affiliated to Shanghai Jiao Tong University School of Medicine,Shanghai Key Laboratory of Stomatology,Shanghai 200011,China)

机构地区：[1]上海交通大学医学院附属第九人民医院口腔修复科,上海市口腔医学重点实验室,上海200011

出　　处：《口腔医学》2018年第9期808-813,共6页Stomatology

基　　金：上海九院临床研究助力计划资助(JYLJ024);上海交通大学医工(理)交叉基金资助(YG2014MS04);上海市卫计委卫生行业临床研究专项(201840022)

摘　　要：目的研究全上颌口内数字化印模的准确度。方法用口内扫描仪获得28名志愿者的上颌数字化印模,同时制取传统印模并灌注石膏模型,将台式激光扫描仪扫描石膏模型获得的3D图像作为参照模型。利用Geomagic Qualify 12软件进行图像分析。应用两配对样本t检验分析腭部软组织与全牙列数字化印模的准确度是否有显著差异。ANOVA和LSD检验分析不同牙列宽度或腭穹窿高度分组间数字化印模的准确度差异。结果软组织数字化印模正确度为(131.70±35.50)μm,精密度为(54.51±10.87)μm;全牙列数字化印模正确度为(77.95±13.86)μm,精密度为(58.88±11.51)μm。腭穹窿高度对腭部软组织数字化印模的准确度无明显影响(P>0.05),而牙列宽度对全牙列数字化印模的精密度有影响(P=0.02)。结论口内扫描用于获取全上颌数字化印模是可行的。全上颌数字化印模能否满足临床要求仍需进一步研究。Objective To in vivo evaluate the accuracy of 3Shape TRIOS for the whole maxilla. Methods 28 healthy volunteers were recruited in the study. Everyone＇ s whole maxilla got intraoral scan for three times by 3Shape TRIOS and then received one con- ventional silicon impression. The conventional impression was poured into a gypsum castand three-dimensional（3D） digitized image was captured from the cast by an extraoral scanner, as the reference model. All datasets were imported to Geomagic software for 3D analysis. Color-coded deviation maps showed qualitative visualization of the deviations. Results For the digital impressions of palatal soft tis- sues, the accuracy was （131.70 ＋ 35.50 ） p-m and precision was （54.51-＋ 10.87 ） txm. For the digital impressions for upper full dentitions, accuracy was （ 77.95 ＋ 13.86） ixm and precision was （ 58.88 -＋ 11.51 ） ixm. There was no significant effect of palatal vault height on accuracy of digital impressions of palatal soft tissues （ P〉O.05 ） , but arch width was found to have a significant effect on pre- cision of intraoral digital impressions for full dentitions （P = 0.02 ）. Conclusions It is feasible to use the intraoral scanner to obtain digital impressions for whole upper jaws. Further studies should be carried out to confirm whether the accuracy of digital impressions for whole upper jaws is acceptable in clinic.

关 键 词：口内数字化印模 腭部软组织 全牙列 准确度 

分 类 号：R783.2[医药卫生—口腔医学]