Sawangsri Kedith, Leelaluk Satita, Hsieh Yuan-Lynn, Lee Damian J
Division of Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, USA.
Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, Massachusetts, USA.
J Prosthodont. 2025 Apr;34(4):388-394. doi: 10.1111/jopr.13967. Epub 2024 Oct 29.
To compare trueness, time, and number of images of different denture digitization protocols.
Maxillary and mandibular complete prostheses (n = 10) were fabricated and attached with four fiducial markers. Reference scans were obtained using a laboratory scanner. Test scans were obtained using three different protocols: intraoral scanner (IOS) with manufacturer's scanning pattern (MA), IOS with rolling scanning pattern (RO), and IOS- polyvinylsiloxane technique (IOS-PVS). The scan time and number of images taken were recorded for analysis. Using 3-dimensional (3D) inspection software (Geomagic control X), corresponding test scans were superimposed to the reference scan using overall best fit. For trueness analysis, the root mean square (RMS) value of the overall best-fit superimposition was calculated. One-way ANOVA followed by Games-Howell and Tukey post-hoc tests were applied to analyze trueness, scan time, and number of images. Qualitative analysis of trueness was performed using 3D color mapping.
The lowest RMS value was in the mandibular RO protocol (0.10 ±0.01 mm). The highest RMS value was mandibular scans of the IOS-PVS protocol (1.46 ± 0.09 mm). The longest digitization time was recorded in the maxillary MA group (3.34 ± 0.70 min), while the shortest was in the mandibular RO protocol (2.48 ± 0.56 min). Qualitative analysis revealed that deviation in IOS-PVS protocol occurred around the border area of the prosthesis.
The denture digitization protocols tested significantly affected trueness, total scanning time, and number of images. Digitizing dentures using the RO protocol improved trueness and reduced scanning time and the number of images.
比较不同义齿数字化方案的准确性、时间和图像数量。
制作上颌和下颌全口义齿（n = 10）并附着四个基准标记。使用实验室扫描仪进行参考扫描。使用三种不同方案进行测试扫描：采用制造商扫描模式（MA）的口内扫描仪（IOS）、采用滚动扫描模式（RO）的IOS以及IOS - 聚乙烯硅氧烷技术（IOS - PVS）。记录扫描时间和拍摄的图像数量以进行分析。使用三维（3D）检测软件（Geomagic control X），通过整体最佳拟合将相应的测试扫描与参考扫描叠加。为进行准确性分析，计算整体最佳拟合叠加的均方根（RMS）值。应用单因素方差分析，随后进行Games - Howell和Tukey事后检验以分析准确性、扫描时间和图像数量。使用3D颜色映射对准确性进行定性分析。
最低的RMS值出现在下颌RO方案中（0.10±0.01毫米）。最高的RMS值出现在IOS - PVS方案的下颌扫描中（1.46±0.09毫米）。最长的数字化时间记录在上颌MA组（3.34±0.70分钟），而最短的是下颌RO方案（2.48±0.56分钟）。定性分析显示，IOS - PVS方案的偏差发生在义齿的边缘区域。
所测试的义齿数字化方案显著影响准确性、总扫描时间和图像数量。使用RO方案数字化义齿可提高准确性并减少扫描时间和图像数量。
