Int J Prosthodont. 2022 Nov-Dec;35(6):809-814. doi: 10.11607/ijp.7692.
To explore the applications of 3D scanning and 3D printing techniques in the restorative treatment of edentulous patients.
A total of 30 edentulous patients (Atwood classes 1 to 4) who visited The 960th Hospital of the People's Liberation Army, Jinan, China, from March 1, 2018 to May 1, 2020 were selected, and the patients were randomly divided into two groups: a traditional complete denture group (group A) and a 3D-printed complete denture group (group B). Each group comprised 15 patients. In group A, the traditional method was used to fabricate complete dentures. In group B, 3D scanning, computer-aided design (CAD), 3D printing, and the duplicate denture technique were used to fabricate the dentures. A single-blinded method was used. Patient satisfaction was measured with a 0-10 visual analog scale (VAS) at four time points: immediately and 1 month, 3 months, and 6 months after denture delivery. SPSS version 22.0 software was used to analyze the data.
The ability to speak, ability to chew, and comfort in the two groups gradually improved at the first three time points. VAS scores increased to a satisfactory level after 3 months. The esthetics and stability of the two groups were scored high after the initial delivery. The VAS scores of the two groups regarding esthetics, ability to speak, ability to chew, stability, and comfort were not significantly different (P > .05) at any time point. The number of visits in the 3D-printed complete denture group were significantly decreased in comparison to the traditional group.
The use of 3D printing for manufacturing complete dentures can rapidly restore edentulous patients and meet patient demands regarding esthetics and function.
探讨 3D 扫描和 3D 打印技术在无牙颌患者修复治疗中的应用。
选取 2018 年 3 月 1 日至 2020 年 5 月 1 日期间在中国人民解放军济南第 960 医院就诊的 30 名无牙颌患者（Atwood 分类 1 至 4 类），采用随机数字表法将患者分为两组：传统全口义齿组（A 组）和 3D 打印全口义齿组（B 组），每组 15 例。A 组采用传统方法制作全口义齿，B 组采用 3D 扫描、计算机辅助设计（CAD）、3D 打印和复制义齿技术制作义齿。采用单盲法，在义齿交付后即刻和 1 个月、3 个月、6 个月 4 个时间点采用 0-10 分视觉模拟评分（VAS）评估患者满意度。采用 SPSS 22.0 软件进行数据分析。
两组患者的言语能力、咀嚼能力和舒适度在最初 3 个时间点逐渐提高，VAS 评分在 3 个月后达到满意水平。两组患者义齿交付初始时的美观度和稳定性评分均较高。两组患者的美观度、言语能力、咀嚼能力、稳定性和舒适度 VAS 评分在任何时间点均无显著差异（P＞0.05）。与传统组相比，3D 打印全口义齿组的就诊次数明显减少。
3D 打印技术用于全口义齿制作可快速恢复无牙颌患者的口腔功能，满足患者对美观和功能的需求。
