Graduate student, State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
Graduate student, Department of Dental Technology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
J Prosthet Dent. 2023 May;129(5):684-689. doi: 10.1016/j.prosdent.2021.07.017. Epub 2021 Sep 2.
A completely digital workflow is described for the immediate restoration of a fractured fiber post with a digitally prefabricated definitive restoration using 3-dimensionally printed guides. The geometric morphology and axis of the root canal were digitally determined by using cone beam computed tomography to localize the 3-dimensional position of the fractured fiber post. A virtual drill modeled on the shape of the fractured post was fabricated and customized for removal of the post by using a guide to facilitate the intraoral transfer of the drilling procedure. A titanium post-and-core and crown had been virtually predesigned and fabricated before the procedure, and 2 digital guides were designed for their placement. All guides were 3-dimensionally printed. By following this workflow, the removal of the fractured fiber post and immediate definitive restoration were completed in 1 visit, facilitating a more efficient, predictable, and straightforward treatment.
本文描述了一种完全数字化的工作流程，使用三维打印导板，通过数字化预制的最终修复体，即刻修复纤维桩折裂。通过锥形束 CT 确定根管的几何形态和轴，以定位纤维桩折裂的三维位置。制作与折裂纤维桩形状相符的虚拟钻头，并使用导板定制化去除纤维桩，以方便将钻取程序转移至口内。在操作前已对钛桩核和牙冠进行了虚拟预先设计和制作，并设计了 2 个数字导板以放置它们。所有导板均采用三维打印制作。通过这种工作流程，可在一次就诊中完成纤维桩折裂的去除和即刻最终修复，使治疗更高效、可预测和简单。
