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Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins

Digital dentures can be fabricated by subtractive milling or, more recently, by 3D-printing technology. Several different 3D-printing technologies and materials are commercially available, and the differences in printing accuracy and mechanical behavior among them are unknown. Aim: This study evalua...

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Autores principales: al-Qarni, Faisal D., Gad, Mohammed M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8999488/
https://www.ncbi.nlm.nih.gov/pubmed/35407742
http://dx.doi.org/10.3390/ma15072410
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author al-Qarni, Faisal D.
Gad, Mohammed M.
author_facet al-Qarni, Faisal D.
Gad, Mohammed M.
author_sort al-Qarni, Faisal D.
collection PubMed
description Digital dentures can be fabricated by subtractive milling or, more recently, by 3D-printing technology. Several different 3D-printing technologies and materials are commercially available, and the differences in printing accuracy and mechanical behavior among them are unknown. Aim: This study evaluated the printing accuracy of 3D-printed denture base resins and assessed their flexural properties when compared with conventional heat-polymerized ones. Methods: A total of 40 acrylic specimens were prepared with four different materials: three 3D-printed resins, and a conventional heat polymerized resin was used as a control. The printing accuracy was evaluated by calculating the error rate of 3D-printed specimens compared with dimensions of the virtual design. Flexural strength and elastic modulus were assessed with a universal testing machine. One-way ANOVA and Kruskal–Wallis tests were used for analysis. Results: Printing accuracy across the tested materials was statistically different. Specimen length showed error rates between 1.3% and 2.4%, specimen width had error rates between 0.2% and 0.7%, and specimen thickness had error rates between 0.2% and 0.6%. Three-dimensional-printed specimens had lower flexural strength and elastic modulus values when compared with heat-polymerized specimens. Conclusions: The choice of material seems to influence printing accuracy, and to a lesser extent, flexural strength. However, it has no effect on the elastic modulus.
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spelling pubmed-89994882022-04-12 Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins al-Qarni, Faisal D. Gad, Mohammed M. Materials (Basel) Article Digital dentures can be fabricated by subtractive milling or, more recently, by 3D-printing technology. Several different 3D-printing technologies and materials are commercially available, and the differences in printing accuracy and mechanical behavior among them are unknown. Aim: This study evaluated the printing accuracy of 3D-printed denture base resins and assessed their flexural properties when compared with conventional heat-polymerized ones. Methods: A total of 40 acrylic specimens were prepared with four different materials: three 3D-printed resins, and a conventional heat polymerized resin was used as a control. The printing accuracy was evaluated by calculating the error rate of 3D-printed specimens compared with dimensions of the virtual design. Flexural strength and elastic modulus were assessed with a universal testing machine. One-way ANOVA and Kruskal–Wallis tests were used for analysis. Results: Printing accuracy across the tested materials was statistically different. Specimen length showed error rates between 1.3% and 2.4%, specimen width had error rates between 0.2% and 0.7%, and specimen thickness had error rates between 0.2% and 0.6%. Three-dimensional-printed specimens had lower flexural strength and elastic modulus values when compared with heat-polymerized specimens. Conclusions: The choice of material seems to influence printing accuracy, and to a lesser extent, flexural strength. However, it has no effect on the elastic modulus. MDPI 2022-03-24 /pmc/articles/PMC8999488/ /pubmed/35407742 http://dx.doi.org/10.3390/ma15072410 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
al-Qarni, Faisal D.
Gad, Mohammed M.
Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins
title Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins
title_full Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins
title_fullStr Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins
title_full_unstemmed Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins
title_short Printing Accuracy and Flexural Properties of Different 3D-Printed Denture Base Resins
title_sort printing accuracy and flexural properties of different 3d-printed denture base resins
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8999488/
https://www.ncbi.nlm.nih.gov/pubmed/35407742
http://dx.doi.org/10.3390/ma15072410
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