Efficacy of two different layer heights on the accuracy of 3-D printed orthodontic models | ||
| Ain Shams Dental Journal | ||
| Volume 33, Issue 1, March 2024, Pages 50-60 PDF (4.79 M) | ||
| Document Type: Original articles | ||
| DOI: 10.21608/asdj.2024.252684.1196 | ||
| Authors | ||
| Kareem Shendy1; Mona Abou El Fotouh2; Tarek Ali3; Sharaf Eldeen M. Abbas4; Shaimaa Abuelsadat* 5 | ||
| 1Oral and Maxillofacial Radiology, Faculty of Dentistry, Ain Shams University | ||
| 2Department of Oral and Maxillofacial Radiology Faculty of Dentistry Ain-Shams University, Cairo, Egypt. | ||
| 3Faculty of Dentistry, Department of Diagnostic Sciences, Taibah University | ||
| 4Faculty of Dentistry, Cairo University, Cairo, Egypt. | ||
| 5faculty of dentistry Ain shams univeristy cairo egypt | ||
| Abstract | ||
| Aim: This study aimed to assess the accuracy of the 3D printed model by DLP technology at 50-µm and 100-µm layer height Material and Methods: A desktop scanner, R700 desktop scanner (3Shape, Copenhagen, Denmark) was used to scan an orthodontic typo-dent cast. A total number of (20) models were printed using a Digital Light Processing 3D printer and divided into two separate group. The 1st group (n=10) and the 2nd (n=10) groups were printed at 50-μm and 100-μm layer heights respectively. Assessment was performed using the GOM Inspect. Results: Data were presented as mean and standard deviation values and were tested for normality using Shapiro-Wilk test. Data were non-parametric and were tested using Wilcoxon signed rank test. The significance level was set at p≤0.05 within all tests. In the molar area, 50-µm layer thickness showed statistically significant difference in the right side with 100-µm. In the premolar region, there was no statistically significant differences between both groups in the right side. The canine area demonstrated that the 50-µm layer height was statistically significant lower in deviation than 100-µm group in all directions. There was a strong agreement between both observers (ICC=0.965, 95%CI= (0.958:0.971), p<0.001). Conclusion: the results of our research as a whole show that models printed at 50-μm display lower deviations in X, Y, and Z axes with a more consistent distortion pattern when compared to 100-μm models. Besides, the ideal thickness for high precision requirements is 50 µm, whereas 100-μm could be used in printing diagnostic models. | ||
| Keywords | ||
| Accuracy; Orthodontics; Dental Models; 3D printing | ||
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