无牙颌种植修复数字化印模口外扫描与口内扫描的精度比较研究

doi:10.7518/hxkq.2025.2025077

华西口腔医学杂志 ›› 2025, Vol. 43 ›› Issue (6): 771-779.doi: 10.7518/hxkq.2025.2025077

无牙颌种植修复数字化印模口外扫描与口内扫描的精度比较研究

杨咏涛¹(), 李欣², 商相宜¹, 单珅瑶¹, 李文博¹, 秦庆钊³, 王勇³(), 赵一姣¹()

^1.北京大学医学部医学技术研究院，北京 100191
^2.青岛大学附属医院口腔种植科青岛大学口腔医学院，青岛 266100
^3.北京大学口腔医学院·口腔医院，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（中国医学科学院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，北京 100081

收稿日期:2025-02-28 修回日期:2025-10-10 出版日期:2025-12-01 发布日期:2025-11-27
通讯作者: 王勇,赵一姣 E-mail:yongtaoyang2024@163.com;kqcadc@bjmu.edu.cn;kqcadcs@bjmu.edu.cn
作者简介:杨咏涛，硕士，E-mail：yongtaoyang2024@163.com
基金资助:
北京市自然科学基金(L232100);北京市自然科学基金(L242132);国家自然科学基金(82271039);国家自然科学基金(82071171);国家重点研发计划(2022YFC-2405401)

Comparative study on the accuracy of extraoral scanning versus intraoral scanning in digital impressions for implant restoration in edentulous jaws

Yang Yongtao¹(), Li Xin², Shang Xiangyi¹, Shan Shenyao¹, Li Wenbo¹, Qin Qingzhao³, Wang Yong³(), Zhao Yijiao¹()

^1.Institute of Medical Technology, Peking University Health Science Center, Beijing 100191, China
^2.Dept. of Oral Implantology, Affiliated Hospital of Qingdao University, School of Stomatology, Qingdao University, Qingdao 266100, China
^3.Center of Digital Dentistry Central Laboratory/Dept. 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 (Key Laboratory of Digital Stomatology, Chinese Academy of Medical Sciences) & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China

Received:2025-02-28 Revised:2025-10-10 Online:2025-12-01 Published:2025-11-27
Contact: Wang Yong,Zhao Yijiao E-mail:yongtaoyang2024@163.com;kqcadc@bjmu.edu.cn;kqcadcs@bjmu.edu.cn
Supported by:
the National Natural Science Foundation of China(82271039);Beijing Natural Science Foundation(L23-2100);National Key Research and Development Program of China(2022YFC24-05401)

摘要/Abstract

摘要：

目的评估自主研发的基于四目立体摄影测量技术的种植口外扫描系统在获取种植体三维位置信息方面的精准度，并与口内扫描系统进行对照研究。方法借助体外无牙颌种植模型，分别使用口外扫描系统和口内扫描系统获取含有种植体三维形态和位置信息的STL（Standard Tessellation Language）数据，作为实验组和对照组，使用牙颌模型扫描仪获取参考数据，在Geomagic Wrap 2021软件中分析实验组和对照组与参考数据的三维形态偏差、线性偏差和角度偏差，比较2组的正确度和精密度。结果口外扫描系统在三维形态偏差、线性偏差和角度偏差的正确度上均优于口内扫描系统，且差异具有统计学意义（P<0.001）。口外扫描系统在三维形态偏差上的精密度也高于口内扫描系统（P<0.001）。随着种植体数量的增加，口外扫描系统的三维形态偏差和线性偏差有所上升（P<0.001），但角度偏差变化差异无统计学意义，而口内扫描系统的三维形态偏差、线性偏差和角度偏差均有增加（P<0.05）。结论基于立体摄影测量技术的口外扫描系统在获取多单位种植体位置信息方面的精度优于口内扫描系统，为实现全流程无牙颌种植数字化修复提供了新的思路。

关键词: 无牙颌种植, 数字化印模, 立体摄影测量, 口内扫描, 精度

Abstract:

Objective To evaluate the accuracy of a self-developed extraoral scanning system based on four-camera stereophotogrammetric technology in the acquisition of three-dimensional positional information on dental implants and conduct a comparative study involving an intraoral scanning system. Methods With the use of an in vitro edentulous jaw model with implants, extraoral (experimental group) and intraoral (control group) scanning systems were employed to obtain STL (Standard Tessellation Language) datasets containing three-dimensional morphological and positional information on scan bodies. In addition, a dental model scanner was used to obtain reference data. The three-dimensional morphological, linear, and angular deviations between groups and reference data were analyzed using Geomagic Wrap 2021 software to compare trueness and precision. Results The extraoral scanning system demonstrated superior trueness in three-dimensional morphological, linear, and angular deviations compared with the intraoral scanning system, with statistically significant differences (P<0.001). The extraoral scanning system also showed a higher precision in three-dimensional morphological deviation (P<0.001). As the number of implants increased, the extraoral scanning system exhibited increased three-dimensional morphological and linear deviations (P<0.001) but maintained a stable angular deviation. The intraoral scanning system displayed significant increases in three-dimensional morphological, linear, and angular deviations with the increase in the number of implants (P<0.05). Conclusion The stereophotogrammetry-based extraoral scanning system outperforms intraoral scanning system in terms of the accuracy for multi-unit implant positioning and provides a novel approach for attaining a fully digital workflow for implant rehabilitation in edentulous jaws.

Key words: edentulous implant, digital impression, stereophotogrammetry, intraoral scan, accuracy

中图分类号:

R783

杨咏涛, 李欣, 商相宜, 单珅瑶, 李文博, 秦庆钊, 王勇, 赵一姣. 无牙颌种植修复数字化印模口外扫描与口内扫描的精度比较研究[J]. 华西口腔医学杂志, 2025, 43(6): 771-779.

Yang Yongtao, Li Xin, Shang Xiangyi, Shan Shenyao, Li Wenbo, Qin Qingzhao, Wang Yong, Zhao Yijiao. Comparative study on the accuracy of extraoral scanning versus intraoral scanning in digital impressions for implant restoration in edentulous jaws[J]. West China Journal of Stomatology, 2025, 43(6): 771-779.

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组别	模型1	模型2	t值	P值
实验组	21.48±0.60	38.84±0.86	-52.317	<0.001
对照组	100.26±5.75	124.34±14.21	-4.968	<0.001
t值	-43.118	-18.992
P值	<0.001	<0.001

组别	模型1	模型2	Z值	P值
实验组	29.65±18.83	46.03±29.37	-5.433	<0.001
对照组	83.21±59.95	99.20±81.09	-18.077	<0.001
Z值	-8.843	-8.873
P值	<0.001	<0.001

组别	模型1	模型2	Z值	P值
实验组	0.31±0.19	0.34±0.25	-0.208	0.836
对照组	0.49±0.37	0.61±0.50	-1.967	<0.05
Z值	-4.020	-6.703
P值	<0.001	<0.001

组别	模型1	模型2	Z值	P值
实验组	3.10±0.71	4.47±1.58	-5.306	<0.001
对照组	41.83±15.09	39.81±13.66	-0.545	0.586
Z值	-8.171	-8.171
P值	<0.001	<0.001

无牙颌种植修复数字化印模口外扫描与口内扫描的精度比较研究

Comparative study on the accuracy of extraoral scanning versus intraoral scanning in digital impressions for implant restoration in edentulous jaws

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