在寻求正畸治疗的患者中，使用智能手机设备进行新型框架支持的三维面部扫描与徒手面部扫描的比较评估：一项横断面研究

IF 1.8 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

International Orthodontics Pub Date : 2025-04-25 DOI:10.1016/j.ortho.2025.101012

Aditya Talwar , Isha Duggal , Harpreet Grewal , Neha Bhutiani , Navneet Singh , Saurabh Kaushik

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引用次数: 0

摘要

软组织的表面人体测量评估是测量3D面部变化的理想方法，基于智能手机/平板电脑的应用程序彻底改变了3D面部采集。然而，由于在连续图像捕获模式下徒手记录扫描结果，所获得的扫描结果容易失真，重复性有限，从而也降低了其可靠性。目的是介绍一种创新设备的设计和操作，以标准化、可重复和方便的方式为儿童和成人获取3D面部扫描。材料和方法：该设备具有直臂和剪刀臂的框架，推荐尺寸为68 × 60 × 34 cm，具有360度旋转关节，类似于牙科诊所使用的壁挂式x射线系统。对15例年龄在19-25岁之间的患者（平均年龄23.13岁）使用苹果iPad Pro中的Scandy Pro应用程序（框架支持[SF]和徒手[SWF]）进行面部扫描。扫描结果以。stl格式导出，并使用Meshlab和Viewbox 4软件进行表面比较、扫描时间和面部软组织标志之间的平均绝对距离（MAD）分析。结果框架扫描显示畸变较少，尤其是在鼻唇区和眶周区。颧区R和L区差异最大（分别为0.608±1.605和0.503±1.191），A点（0.323±1.381）、Pogonion区（0.364±1.344）和眶下区R和L区差异最小（分别为0.307±0.785和0.362±1.089）。在没有扫描中断的情况下，SF的平均扫描时间减少了三倍，为10.14秒，而SWF的平均扫描时间为27.81秒，同时出现了12个跟踪丢失实例。SF扫描的叠加分析显示ICC值在0.574 ~ 0.882之间，一致性较好。结论提出的框架为智能手机设备的3D面部成像提供了可靠、准确、经济的替代方案。它显示了高再现性和显著减少扫描时间和跟踪损失。该仪器可方便临床常规使用3D面部扫描在正畸，提供便携式和非侵入性的解决方案。

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Comparative evaluation of novel framework-supported 3-dimensional facial scanning using smartphone device with freehand facial scanning in patients seeking orthodontic treatment: A cross-sectional study

Introduction

Surface anthropometric assessment of soft tissues is an ideal approach for measuring 3D facial changes with smartphone/tablet-based applications revolutionizing 3D facial acquisition. However, the scans obtained are prone to distortion and have limited repeatability due to the freehand recording of the scans in continuous image capture mode, thus also reducing their reliability. The aim was to introduce the design and operation of an innovative apparatus for acquiring 3D facial scans in a standardised, repeatable, and convenient way for young children and adults.

Material and methods

The apparatus presents a framework with a straight and scissor arm with the recommended dimension of 68 × 60 × 34 cm with a 360-degree rotatory joint similar to wall-mounted X-ray systems used in dental offices. Facial scans of 15 patients aged between 19–25 years (mean age = 23.13 years) were recorded using the two techniques (framework-supported [SF] and freehand [SWF]) Scandy Pro app in Apple iPad Pro. The scans were exported in .stl format and analysed using Meshlab and Viewbox 4 software for surface comparison, scan time, and mean absolute distance (MAD) between facial soft tissue landmarks.

Results

Scans using the framework (SF) showed fewer aberrations, especially in the nasolabial and periorbital areas. Zygoma R and L (0.608 ± 1.605 and 0.503 ± 1.191 respectively) displayed the most difference, while Point A (0.323 ± 1.381), Pogonion (0.364 ± 1.344), and infraorbital region R and L (0.307 ± 0.785 and 0.362 ± 1.089 respectively) displayed the least. With no scan interruptions, the average scan time decreased threefold to 10.14 seconds for SF compared to 27.81 seconds for SWF, with 12 instances of tracking loss. Superimposition analysis of SF scans shows ICC values from 0.574 to 0.882, indicating good agreement.

Conclusion

The proposed framework provides a reliable, accurate, and cost-effective alternative for 3D facial imaging using smartphone devices. It demonstrates high reproducibility and significant reductions in scan time and tracking loss. This apparatus could facilitate the routine clinical use of 3D facial scanning in orthodontics, offering portable and non-invasive solutions.

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来源期刊

International Orthodontics DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.50

自引率

13.30%

发文量

审稿时长

26 days

期刊介绍： Une revue de référence dans le domaine de orthodontie et des disciplines frontières Your reference in dentofacial orthopedics International Orthodontics adresse aux orthodontistes, aux dentistes, aux stomatologistes, aux chirurgiens maxillo-faciaux et aux plasticiens de la face, ainsi quà leurs assistant(e)s. International Orthodontics is addressed to orthodontists, dentists, stomatologists, maxillofacial surgeons and facial plastic surgeons, as well as their assistants.