Ge Yongcheng, Zhao Ting, Fan Sizheng, Liu Pengyuan, Liu Prof Xiaoqiu
Resident and Graduate student, Department of Geriatric Dentistry, Hospital of Stomatology, Jilin University, Changchun, PR China.
Resident and Graduate student, Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, PR China.
J Prosthet Dent. 2025 Sep;134(3):791.e1-791.e8. doi: 10.1016/j.prosdent.2025.05.028. Epub 2025 Jun 4.
The full-process digital polyetheretherketone (PEEK) removable partial denture (RPD) has the potential to significantly improve patient treatment comfort and work efficiency. However, a comparison of the fit, mastication efficiency, clinical efficacy, and patient satisfaction between completely digital and semidigital workflows for PEEK RPDs is needed to assess its benefits.
The purpose of this preliminary clinical study was to compare the differences in the fit, mastication efficiency, clinical efficacy, and patient satisfaction between completely digital and semidigital workflows for PEEK RPDs.
Twenty participants with partial edentulism were included in the study. Each received two types of RPD, one fabricated using a completely digital workflow and the other using a semidigital workflow. The completely digital group used intraoral scanning with a 3Shape scanner to obtain digital scans, followed by computer-aided design and computer-aided manufacturing (CAD-CAM) of the dentures. The semidigital group involved traditional polyvinyl siloxane (PVS) impressions, gypsum casts, and the subsequent CAD-CAM processing of the dentures. PVS was used to replicate the gap between the oral mucosa and the RPD baseplate tissue in both groups, and 3-dimensional (3D) deviation analysis was used for measurements. Mastication efficiency was measured using the absorbance method, and patient satisfaction was evaluated via a questionnaire. T tests were conducted to compare the fit, mastication efficiency, clinical efficacy, and patient satisfaction between the two groups (α=.05).
A significant difference in the fit was found between the baseplate tissue and oral mucosa at the distal extension of the RPD between the completely digital and semidigital PEEK RPDs (P=.038, P=.023), while no significant difference was observed at the nondistal extension end (P=.445, P=.331). No significant difference in mastication efficiency was found between the two groups (P=.448). The completely digital group reported higher comfort levels than the semidigital group (P<.001). No significant differences in overall denture satisfaction were found between the two groups at 1, 2, and 3 months after restoration (P=.730, P=.463, P=.526).
Both completely digital and semidigital workflows for PEEK RPDs achieve good fit. The completely digital PEEK RPD significantly enhances patient comfort and work efficiency, making it a suitable option for broader application.
全流程数字化聚醚醚酮（PEEK）可摘局部义齿（RPD）有潜力显著提高患者治疗舒适度和工作效率。然而，需要比较PEEK RPD完全数字化和半数字化工作流程在贴合度、咀嚼效率、临床疗效和患者满意度方面的差异，以评估其优势。
本初步临床研究的目的是比较PEEK RPD完全数字化和半数字化工作流程在贴合度、咀嚼效率、临床疗效和患者满意度方面的差异。
本研究纳入了20名部分牙列缺损的参与者。每人接受两种类型的RPD，一种采用完全数字化工作流程制作，另一种采用半数字化工作流程制作。完全数字化组使用3Shape扫描仪进行口内扫描以获取数字扫描，随后进行义齿的计算机辅助设计和计算机辅助制造（CAD-CAM）。半数字化组涉及传统的聚乙烯基硅氧烷（PVS）印模、石膏模型以及随后的义齿CAD-CAM加工。两组均使用PVS复制口腔黏膜与RPD基托组织之间的间隙，并采用三维（3D）偏差分析进行测量。使用吸光度法测量咀嚼效率，并通过问卷评估患者满意度。进行t检验以比较两组之间的贴合度、咀嚼效率、临床疗效和患者满意度（α = 0.05）。
完全数字化和半数字化PEEK RPD在RPD远中延伸端基托组织与口腔黏膜的贴合度上存在显著差异（P = 0.038，P = 0.023），而在非远中延伸端未观察到显著差异（P = 0.445，P = 0.331）。两组之间的咀嚼效率无显著差异（P = 0.448）。完全数字化组报告的舒适度高于半数字化组（P < 0.001）。修复后1、2和3个月时，两组之间在义齿总体满意度方面未发现显著差异（P = 0.730，P = 0.463，P = 0.526）。
PEEK RPD的完全数字化和半数字化工作流程均能实现良好的贴合度。完全数字化的PEEK RPD显著提高了患者舒适度和工作效率，使其成为更广泛应用的合适选择。
