Air Force Postgraduate Dental School, Lackland Air Force Base, Texas; Uniformed Services University, Bethesda, Maryland.
Air Force Postgraduate Dental School, Lackland Air Force Base, Texas; Uniformed Services University, Bethesda, Maryland.
J Endod. 2020 Jun;46(6):863-871. doi: 10.1016/j.joen.2020.02.006. Epub 2020 Apr 10.
Targeted endodontic microsurgery (TEMS) combines a precisely designed 3-dimensional (3D)-printed surgical guide with a trephine bur for safe and efficient osteotomy and root-end resection. The TEMS digital workflow converts the patient's anatomy into digital data in 4 steps. First, bone, teeth, and neurovascular spaces are rendered with cone-beam computed tomographic imaging. Next, crowns and soft tissues are rendered with an intraoral optical scan, a benchtop optical scan of an impression or cast, or a cone-beam computed tomographic scan of an impression or cast. Third, these renderings are merged within design software to create a 3D construction containing a virtual model. Finally, guide design is performed on the virtual model for 3D printing. A significant gap in knowledge exists in that digital workflow principles and considerations are not documented in the endodontic literature. The aim of this article is to describe TEMS digital workflow guiding principles.
靶向根管显微外科（TEMS）将经过精心设计的三维（3D）打印手术导板与环钻结合使用，以实现安全、高效的截骨和根尖切除。TEMS 数字化工作流程将患者的解剖结构转化为数字化数据，共分四步完成。首先，利用锥形束 CT 成像对骨组织、牙齿和神经血管间隙进行渲染。接下来，采用口腔内光学扫描、印模或模型的台式光学扫描或印模或模型的锥形束 CT 扫描对牙冠和软组织进行渲染。第三步，将这些渲染结果合并到设计软件中，创建包含虚拟模型的 3D 结构。最后，在虚拟模型上进行导板设计，以便 3D 打印。然而，目前在牙髓学文献中并未记载数字化工作流程的原理和注意事项，因此相关知识仍存在较大空白。本文旨在介绍 TEMS 数字化工作流程的指导原则。
