Anitua Eduardo, Lazcano Asier, Eguia Asier, Alkhraisat Mohammad Hamdan
University Institute for Regenerative Medicine and Oral Implantology-UIRMI (UPV/EHU-Fundación Eduardo Anitua), 01007 Vitoria, Spain.
BTI Biotechnology Institute, 01005 Vitoria, Spain.
Dent J (Basel). 2024 Sep 24;12(10):298. doi: 10.3390/dj12100298.
Digital workflow and intraoral scanners (IOSs) are used to clinically obtain data for a wide range of applications in restorative dentistry. The study aimed to compare two different IOSs with inexperienced users in the digital workflow of oral split manufacturing. Anonymous stone models of upper and lower dentate patients were used. Both models were scanned with a desktop 3D scanner 3Shape D2000 to obtain the reference models (STL). Ten inexperienced operators scanned each model three times with each IOS system (3Shape TRIOS 3 and Carestream CS 3800). Finally, 20 intraoral scanners were randomly chosen from the obtained dataset (10 per IOS system) to design and manufacture 20 nightguards. All the nightguards were scanned. Trueness and precision were calculated and compared between the two IOS systems. All the mean errors both for trueness and precision were below 40 µm, more than acceptable for the design and manufacturing of intraoral devices such as nightguards. All the mean errors (except one) for trueness between the inner part of the nightguards and the upper control model were below 100 µm, less than a printed layer height. For inexperienced operators, both IOSs are suitable for a digital workflow of manufacturing occlusal splints.
数字工作流程和口腔内扫描仪（IOS）被用于临床上获取数据，以用于修复牙科的广泛应用。本研究旨在比较两种不同的IOS在口腔分裂制造数字工作流程中对于缺乏经验的用户的表现。使用了匿名的上下颌有牙患者的石膏模型。两个模型均用台式3D扫描仪3Shape D2000进行扫描以获取参考模型（STL）。十名缺乏经验的操作员使用每个IOS系统（3Shape TRIOS 3和Carestream CS 3800）对每个模型扫描三次。最后，从获得的数据集中随机选择20个口腔内扫描数据（每个IOS系统10个）来设计和制造20个夜磨牙垫。对所有夜磨牙垫进行扫描。计算并比较了两种IOS系统之间的准确性和精确性。准确性和精确性的所有平均误差均低于40μm，对于诸如夜磨牙垫之类的口腔内装置的设计和制造而言是完全可以接受的。夜磨牙垫内部与上部对照模型之间准确性的所有平均误差（除一个之外）均低于100μm，小于打印层高度。对于缺乏经验的操作员而言，两种IOS均适用于制造咬合板的数字工作流程。
