Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study
Background: With CAD-CAM, dental models are often fabricated by additive manufacturing (AM) methods. Dental models for implant prostheses involve the manual placement of analogs, which could affect their final fit. Therefore, in this experimental in vitro study, the accuracy of the analogs’ position...
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MDPI AG
2024-03-01
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author | Noelia García Miguel Gómez-Polo Miriam Fernández José Luis Antonaya-Martín Rocío Ortega Cristina Gómez-Polo Marta Revilla-León Rocío Cascos |
author_facet | Noelia García Miguel Gómez-Polo Miriam Fernández José Luis Antonaya-Martín Rocío Ortega Cristina Gómez-Polo Marta Revilla-León Rocío Cascos |
author_sort | Noelia García |
collection | DOAJ |
description | Background: With CAD-CAM, dental models are often fabricated by additive manufacturing (AM) methods. Dental models for implant prostheses involve the manual placement of analogs, which could affect their final fit. Therefore, in this experimental in vitro study, the accuracy of the analogs’ position in models printed using AM methods was examined by comparing three different printing orientations. Methods: An STL file was obtained by scanning a master model with an implant placed in the maxillary left central incisor position. Three study groups (n = 10) with varying printing orientation parameters were obtained (0, 45, and 90 degrees). They were digitalized with a laboratory scanner and evaluated with an analysis metrology program. Differences between 3D datasets were measured using the RMS for trueness and SD RMS for precision. The data were statistically analyzed using the ANOVA test at a significance level of <i>p</i> < 0.05, followed by the Bonferroni post hoc test. Results: The 45-degrees group showed the best results. Regarding trueness, statistically significant differences were found between the 45- and 90-degrees groups (<i>p</i> < 0.005). In terms of precision, statistically significant differences appeared between the 45- and 0-degrees groups (<i>p</i> < 0.011) and between the 45- and 90-degrees groups (0.003). Conclusions: The printing angulation parameter affects the accuracy of 3D-printed models. Implant models manufactured at 45 degrees of printing angulation are more accurate than those printed at 0 or 90 degrees. |
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spelling | doaj.art-b4305f7cc3ff44c6b61ffc8784d158042024-04-12T13:15:19ZengMDPI AGApplied Sciences2076-34172024-03-01147296610.3390/app14072966Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot StudyNoelia García0Miguel Gómez-Polo1Miriam Fernández2José Luis Antonaya-Martín3Rocío Ortega4Cristina Gómez-Polo5Marta Revilla-León6Rocío Cascos7Department of Nursing and Estomatology, Faculty of Health Sciences, Rey Juan Carlos University, 28922 Madrid, SpainDepartment of Conservative Dentistry and Prosthodontics, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, SpainDepartment of Nursing and Estomatology, Faculty of Health Sciences, Rey Juan Carlos University, 28922 Madrid, SpainDepartment of Nursing and Estomatology, Faculty of Health Sciences, Rey Juan Carlos University, 28922 Madrid, SpainDental Clinic Department, Faculty of Biomedical Sciences, European University of Madrid, 28670 Madrid, SpainDepartment of Surgery, Faculty of Medicine, University of Salamanca, 37007 Salamanca, SpainDepartment of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA 98195, USADepartment of Nursing and Estomatology, Faculty of Health Sciences, Rey Juan Carlos University, 28922 Madrid, SpainBackground: With CAD-CAM, dental models are often fabricated by additive manufacturing (AM) methods. Dental models for implant prostheses involve the manual placement of analogs, which could affect their final fit. Therefore, in this experimental in vitro study, the accuracy of the analogs’ position in models printed using AM methods was examined by comparing three different printing orientations. Methods: An STL file was obtained by scanning a master model with an implant placed in the maxillary left central incisor position. Three study groups (n = 10) with varying printing orientation parameters were obtained (0, 45, and 90 degrees). They were digitalized with a laboratory scanner and evaluated with an analysis metrology program. Differences between 3D datasets were measured using the RMS for trueness and SD RMS for precision. The data were statistically analyzed using the ANOVA test at a significance level of <i>p</i> < 0.05, followed by the Bonferroni post hoc test. Results: The 45-degrees group showed the best results. Regarding trueness, statistically significant differences were found between the 45- and 90-degrees groups (<i>p</i> < 0.005). In terms of precision, statistically significant differences appeared between the 45- and 0-degrees groups (<i>p</i> < 0.011) and between the 45- and 90-degrees groups (0.003). Conclusions: The printing angulation parameter affects the accuracy of 3D-printed models. Implant models manufactured at 45 degrees of printing angulation are more accurate than those printed at 0 or 90 degrees.https://www.mdpi.com/2076-3417/14/7/2966dental implant analogvariation angulationdigital impression3D modelsbuild angle3D printing |
spellingShingle | Noelia García Miguel Gómez-Polo Miriam Fernández José Luis Antonaya-Martín Rocío Ortega Cristina Gómez-Polo Marta Revilla-León Rocío Cascos Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study Applied Sciences dental implant analog variation angulation digital impression 3D models build angle 3D printing |
title | Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study |
title_full | Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study |
title_fullStr | Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study |
title_full_unstemmed | Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study |
title_short | Influence of Printing Angulation on the Accuracy (Trueness and Precision) of the Position of Implant Analogs in 3D Models: An In Vitro Pilot Study |
title_sort | influence of printing angulation on the accuracy trueness and precision of the position of implant analogs in 3d models an in vitro pilot study |
topic | dental implant analog variation angulation digital impression 3D models build angle 3D printing |
url | https://www.mdpi.com/2076-3417/14/7/2966 |
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