三维立体摄影测量技术与正畸

doi:10.13591/j.cnki.kqyx.2023.11.015

摘要/Abstract

摘要：

颌面部软组织分析与正畸治疗的美学效果和治疗稳定性关系密切,三维立体摄影测量技术是正畸科医生进行软组织分析的重要工具。大部分三维立体摄影测量设备具有临床所能接受的精确度及可重复性,并广泛运用于正畸诊断、制定治疗计划、治疗监测以及术后评估方面。随着计算机技术的发展以及大数据时代的到来,未来立体摄影测量技术在增强成像能力、丰富软件功能、提升用户友好性、发展自动化技术以及建立完善数据库等方面都有光明的前景。

关键词: 软组织分析, 三维立体摄影测量, 正畸

Abstract:

The analysis of maxillofacial soft tissue is closely related to the aesthetic effect and stability of orthodontic treatment. Three dimensional stereophotogrammetry is an important tool for orthodontists to conduct soft tissue analysis. Most of the three-dimensional photogrammetric devices have acceptable accuracy and reproducibility, and are widely used in orthodontic diagnosis, treatment planning, treatment monitoring and postoperative evaluation. With the development of computer technology and the arrival of big data era, the stereophotogrammetry technology has bright prospects in terms of promoting imaging capability, enriching software functions, enhancing user friendliness, developing automation technology and establishing and improving databases.

Key words: soft tissue analysis, three dimensional stereophotogrammetry, orthodontics

中图分类号:

R783.5

胡洁琼, 李青奕. 三维立体摄影测量技术与正畸[J]. 口腔医学, 2023, 43(11): 1047-1052.

HU Jieqiong, LI Qingyi. Three dimensional stereophotogrammetry and orthodontics[J]. Stomatology, 2023, 43(11): 1047-1052.

图/表 2

图1

表1

参考文献 41

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项目	3dMDFace	Axisthree XS-200	Canfield VECTRA H1	Crisalix 3D MAMMO simulator/ Crisalix 3D FACE simulator	DI3D
原理	主动及被动立体摄影技术结合	结构光	被动立体摄影	分析二维图像进行三维重建	被动立体摄影
范围	面颈部190°(耳朵到耳朵)	面部180°	左右或者正面部100°	正面180°及上下视角照片	面部180°
获取时间	最快1.5 ms	≤2 s	8 ms	取决于相机的用户	闪光时间1 ms
处理时间	<8 s	取决于电脑	≈20 s	≤5 min	60 s
文件大小	4~26 MB	3 MB	8 MB	没有文件(网络服务)	50~60 MB
几何表象	可获得的点云作为纹理网格以及密集纹理点图	连续的点云,之后转变为网格	网格	网格	连续的点云,之后转变为网格
几何误差	<0.2 mm	<0.5 mm	>0.1 mm	2~5 mm	≤0.2 mm
现场安装	√	√	√	不需要(网络服务)	√
校准时间	20 s	<5 min	无	无	5 min
样本密度	62个点/cm²	每个摄像头有50万个点	1.2 mm几何分辨率(多边形边长)	没有说明	20~30个点/mm²
大概价格 (2013年6月)	21 000英镑起	13 000英镑	9 000英镑	1 590~5 490英镑/年	25 000英镑