扫描方法及模型表面特点对全牙列扫描精度的影响

doi:10.13701/j.cnki.kqyxyj.2022.03.013

口腔医学研究 ›› 2022, Vol. 38 ›› Issue (3): 256-260.DOI: 10.13701/j.cnki.kqyxyj.2022.03.013

扫描方法及模型表面特点对全牙列扫描精度的影响

高毛毛¹, 郭晓阳¹, 马晓平², 李绍萍¹, 陈志宇^1*

1.河北医科大学口腔医学院·口腔医院口腔修复科,河北省口腔医学重点实验室,河北省口腔疾病临床医学研究中心河北石家庄 050017;
2.河北医科大学口腔医院技工中心河北石家庄 050000

收稿日期:2021-11-01 出版日期:2022-03-28 发布日期:2022-03-25
通讯作者: * 陈志宇,E-mail:kqxfchen@163.com
作者简介:高毛毛(1996~ ),女,山西吕梁人,硕士在读,研究方向:口腔数字化美学修复。
基金资助:
2019年度河北省老年病防治经费项目(编号:冀财预付[2019]761号)

Effect of Scanning Method and Surface Characteristics of Model on Scanning Accuracy of Full Dentition

GAO Maomao¹, GUO Xiaoyang¹, MA Xiaoping², LI Shaoping¹, CHEN Zhiyu^1*

1. Department of Prosthodontics, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang 050017, China;
2. Department of Dental Lab, Hospital of Stomatology, Hebei Medical University, Shijiazhuang 050000, China

Received:2021-11-01 Online:2022-03-28 Published:2022-03-25

摘要/Abstract

摘要： 目的: 采用数字化模型三维配准方法,观察模型表面特点及扫描方法对口内直接扫描精度的影响。方法: 对石膏和树脂材质的上下颌牙列模型分别以仓式扫描仪和口内扫描仪进行6次重复扫描,验证扫描仪的精确度。然后以仓式扫描仪获得的数字化模型为参考模型,口内扫描仪采用3种不同扫描方法获取的数字化模型为配准模型,通过三维配准技术,对比二者的差异,观察模型表面特点及扫描方法对扫描数据精度的影响。结果: 仓扫石膏模型数据的上下颌精确度分别为(15.03±1.61) μm、(16.13±1.68) μm,差异无统计学意义(P>0.05),而树脂模型的上下颌精确度分别为(75.92±15.52) μm、(48.51±9.27) μm,差异存在统计学意义(P<0.05)。石膏模型和树脂模型分别采用3种扫描方法的扫描精确度差异无统计学意义(P>0.05)。石膏模型采用顺序扫描法的准确度(73.67±21.08) μm、(52.88±8.23) μm显著高于复面扫描法及交叉扫描法(P<0.05),而树脂模型的3种扫描方法间均无统计学差异(P>0.05)。石膏模型的扫描精度普遍高于树脂模型(P<0.05)。结论: 模型表面特点及扫描方法会影响扫描数据精度;口内直接扫描进行全牙列扫描时应采用特定扫描程序。

关键词: 口内扫描, 扫描方法, 三维配准, 精确度, 准确度

Abstract: Objective: To assess the effect of surface characteristics of the model and the scanning method on the accuracy of direct intraoral scanning. Methods: The upper and lower dentition models made of plaster and resin were scanned 6 times with a laboratory scanner and an intraoral scanner to verify the precision of the scanner. Then, the digital model obtained by the laboratory scanner was taken as the reference model, and the intraoral scanning data using three different scanning methods was set as the registration model. Through the three-dimensional registration technology, the difference in both models was observed. Results: For precision of laboratory scanning, there was no statistical differences between the upper and lower dentition of the plaster model [(15.03±1.61) μm and (16.13±1.68) μm, P>0.05], while the resin model had statistical differences [(75.92±15.52) μm and (48.51±9.27) μm, P<0.05]. For precision of intraoral scanning, there was no statistical difference between three scanning methods for both plaster and resin models. For trueness of intraoral scanning, the sequential scanning method [(73.67±21.08) μm, (52.88±8.23)μm] was significantly higher than duplex scanning method and cross scanning method in plaster model (P<0.05), while there was no statistical difference among three scanning methods for resin model (P>0.05). The accuracy of the plaster model was generally greater than that of the resin model (P<0.05). Conclusion: The surface characteristics of the model and the scanning method will affect the accuracy of the scan data. Specific scanning procedures should be used for direct intraoral scanning of full dentition.

Key words: intraoral scan, scanning method, three-dimensional registration, precision, trueness

高毛毛, 郭晓阳, 马晓平, 李绍萍, 陈志宇. 扫描方法及模型表面特点对全牙列扫描精度的影响[J]. 口腔医学研究, 2022, 38(3): 256-260.

GAO Maomao, GUO Xiaoyang, MA Xiaoping, LI Shaoping, CHEN Zhiyu. Effect of Scanning Method and Surface Characteristics of Model on Scanning Accuracy of Full Dentition[J]. Journal of Oral Science Research, 2022, 38(3): 256-260.

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扫描方法及模型表面特点对全牙列扫描精度的影响

Effect of Scanning Method and Surface Characteristics of Model on Scanning Accuracy of Full Dentition

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