Arcuri L, De Vico G, Ottria L, Condò R, Cerroni L, Mancini M, Barlattani A
Department of Clinical Sciences and Translational Medicine, University of Roma «Tor Vergata», School of Dentistry.
Clin Ter. 2016 May-Jun;167(3):55-62. doi: 10.7417/CT.2016.1926.
To make a comparison between two different approaches of data matching during the preparation of a computer guided implant planning.
Electronic and manual literature searches were performed to collect information about the double-scan protocol and the smart fusion protocol. The two systems were then tested to identify or confirm their advantages and disadvantages.
The double scan protocol is a reliable and well-known process to obtain a fusion between the anatomical data (CBCT) and the prosthetic data (radiographic template). It is possible to use this protocol both in dentate and edentulous patients. The newly developed smart fusion technique offers the possibility to superimpose the anatomical data (CBCT) onto the prosthetic data (cast + wax-up scan) without the production of a radiographic template. This system is still being tested by the clinicians even though dental manufacturers already consider it as the best solution for the dentate patients selected for a static computer guided implant surgery.
Smart fusion protocol offers a reasonable time and cost reduction even though its application is limited to dentate patients. A noticeable drawback of the workflow is the matching step: often a manual intervention is necessary to obtain a correct alignment of the CBCT data with the lab scan of the cast. This issue is partially due to the use of non-volume stable materials during the preparation of the cast. Future improvements could be made by combining CBCT data with direct optical scans of patient dental arches in order to create the so-called 'virtual patient'.
在计算机引导种植计划制定过程中，对两种不同的数据匹配方法进行比较。
进行电子和手动文献检索，以收集有关双重扫描协议和智能融合协议的信息。然后对这两种系统进行测试，以确定或确认它们的优缺点。
双重扫描协议是一种可靠且广为人知的方法，可用于获得解剖数据（锥形束计算机断层扫描，CBCT）和修复数据（放射影像模板）之间的融合。该协议在有牙患者和无牙患者中均可使用。新开发的智能融合技术提供了将解剖数据（CBCT）叠加到修复数据（模型+蜡型扫描）上的可能性，而无需制作放射影像模板。尽管牙科制造商已经将该系统视为选择进行静态计算机引导种植手术的有牙患者的最佳解决方案，但临床医生仍在对其进行测试。
智能融合协议可合理地减少时间和成本，尽管其应用仅限于有牙患者。该工作流程的一个明显缺点是匹配步骤：通常需要人工干预才能使CBCT数据与模型的实验室扫描正确对齐。这个问题部分归因于在模型制备过程中使用了非体积稳定的材料。未来可以通过将CBCT数据与患者牙弓的直接光学扫描相结合来进行改进，以创建所谓的“虚拟患者”。
