Department of Removable Prosthodontics, Faculty of Dentistry, The British University in Egypt, Cairo, Egypt.
Department of Removable Prosthodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
J Indian Prosthodont Soc. 2021 Oct-Dec;21(4):383-390. doi: 10.4103/jips.jips_137_21.
This study was conducted to evaluate the adaptation of maxillary complete denture designed by two different open computer-aided design software programs (3Shape and Exocad) using Geomagic surface matching software.
This was a nonrandomized crossover clinical trial.
Twenty completely edentulous patients were selected in this study. Forty complete dentures were designed using two different software programs: twenty dentures were designed by 3Shape software and the other twenty dentures were designed by Exocad software. Maxillary dentures were evaluated regarding their adaptation by measuring the deviations that occurred between the fitting surface of the three-dimensional printed dentures, and the scanned master casts using Geomagic surface matching software.
An unpaired t-test was used for statistical analysis.
According to the positive average deviation value that represented pressure areas, 3Shape-designed maxillary dentures showed significantly lower mean deviation values (0.041115 ± 0.018165 mm) than Exocad-designed maxillary dentures (0.500665 ± 0.032619 mm). Regarding the negative average deviation values that represented the gap areas, Exocad-designed maxillary dentures showed significantly lower mean deviation values (0.161555 ± 0.007842 mm) than 3Shape-designed maxillary dentures (0.231350 ± 0.009146 mm). The results of the total average deviation values showed significantly lower mean deviation values (0.096950 ± 0.008868 mm) of 3Shape-designed maxillary dentures than Exocad-designed maxillary dentures (0.250755 ± 0.021154 mm).
3Shape and Exocad software programs produced acceptable maxillary dentures regarding denture adaptation. However, maxillary dentures designed by 3 Shape software showed better adaptation than maxillary dentures designed by Exocad software.
本研究旨在通过Geomagic 表面匹配软件评估由两种不同开放式计算机辅助设计软件程序（3Shape 和 Exocad）设计的上颌全口义齿的适应性。
这是一项非随机交叉临床试验。
本研究选择了 20 名完全无牙的患者。使用两种不同的软件程序设计了 40 副全口义齿：20 副由 3Shape 软件设计，另外 20 副由 Exocad 软件设计。使用 Geomagic 表面匹配软件测量三维打印义齿的拟合面与扫描的主模型之间发生的偏差，评估上颌义齿的适应性。
使用配对 t 检验进行统计分析。
根据代表压力区的正平均偏差值，3Shape 设计的上颌义齿的平均偏差值明显较低（0.041115±0.018165mm），而 Exocad 设计的上颌义齿的平均偏差值较高（0.500665±0.032619mm）。关于代表间隙区的负平均偏差值，Exocad 设计的上颌义齿的平均偏差值明显较低（0.161555±0.007842mm），而 3Shape 设计的上颌义齿的平均偏差值较高（0.231350±0.009146mm）。总平均偏差值的结果显示，3Shape 设计的上颌义齿的平均偏差值明显较低（0.096950±0.008868mm），而 Exocad 设计的上颌义齿的平均偏差值较高（0.250755±0.021154mm）。
3Shape 和 Exocad 软件程序设计的上颌全口义齿在义齿适应性方面表现出可接受的结果。然而，3Shape 软件设计的上颌义齿比 Exocad 软件设计的上颌义齿具有更好的适应性。
