上颌弓癌的切除手术导致的软组织和硬组织缺损可导致功能性,审美,和心理伤害。一个可移动的闭孔假体提供了几个优点,恢复口腔功能,提高患者生活质量。技术进步,例如使用口内扫描和计算机辅助设计(CAD)和制造,减少实验室工作时间,消除印模材料吸入的风险,并解决与整个组织底切印象相关的挑战。这里,我们报告了一例部分无牙的女性患者,患有软腭缺损,并为其制造了刚性上颌闭孔假体。获取数字印象,并将扫描的标准镶嵌语言文件发送到实验室。使用牙科CAD软件,上颌金属框架是使用选择性激光熔化技术设计和制造的。闭塞器和人造牙齿是常规加工的,与丙烯酸树脂用于刚性闭塞器。由此产生的闭孔假体可以关闭口鼻连通并改善吞咽,说话,和咀嚼。
Soft and hard tissue defects resulting from resective surgeries for carcinomas located in the maxillary arches can cause functional, esthetic, and psychological damage. A removable
obturator prosthesis offers several advantages, restoring oral functions and improving patients\' quality of life. Technological advancements, such as the use of intraoral scanning and computer-aided design (CAD) and manufacturing, reduce laboratory working time, eliminate the risk of impression material aspiration, and address challenges related to whole tissue undercut impression. Here, we report the case of a partially edentulous female patient with a velo-palatal defect for whom a rigid maxillary
obturator prosthesis was fabricated. Digital impressions were taken and the standard tessellation language files of the scans were sent to the laboratory. Using dental CAD software, the maxillary metallic framework was designed and manufactured using selective laser melting technology. The obturators and artificial teeth were conventionally processed, with acrylic resin used for the rigid obturators. The resulting
obturator prosthesis made it possible to close the oro-nasal communication and to improve swallowing, speaking, and chewing.