A fully digital workflow for the design and manufacture of prostheses for maxillectomy defects was described. Three-dimensional images from spiral computed tomography and intraoral scanning were used to generate a three-dimensional digital cast of a maxillectomy defect. The obturator prosthesis was then designed on the digital cast by combining dental computer-aided design and reverse engineering software programs. The prosthesis was subsequently milled from polyetheretherketone or three-dimensional–printed from polylactic acid.

中文翻译：

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用于设计和制造上颌切除术缺陷假体的全数字化工作流程

描述了用于设计和制造上颌切除术缺陷假体的全数字化工作流程。来自螺旋计算机断层扫描和口腔内扫描的三维图像用于生成上颌切除术缺损的三维数字模型。然后通过结合牙科计算机辅助设计和逆向工程软件程序，在数字模型上设计闭孔假体。该假体随后由聚醚醚酮研磨而成，或由聚乳酸三维打印而成。