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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Main Authors: Noelia García, Miguel Gómez-Polo, Miriam Fernández, José Luis Antonaya-Martín, Rocío Ortega, Cristina Gómez-Polo, Marta Revilla-León, Rocío Cascos
Format: Article
Language:English
Published: MDPI AG 2024-03-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/14/7/2966
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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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