Microhardness and flexural strength of two 3D-printed denture base resins
Abstract Objectives: To evaluate the microhardness and flexural strength of printed and conventionally produced denture base acrylic resins. Methods: A total of 32 parallelepiped specimens (64×10×3.3 mm) were manufactured using two light-cured resins suitable for 3D printing (V-Print Dentbase and Denture 3D+) and two heat-cured resins for conventional production (Probase Hot and Villacryl Rapid) (n=8). After 24-h storage in water, Knoop microhardness (98.12 mN load for 30 s) and three-point flexural strength (1 kN load cell, at a crosshead speed of 5 mm/min and 50 mm between rods) were determined. Microhardness data were analyzed with one-way ANOVA followed by Tukey post-hoc tests. Flexural strength data were submitted to the Kruskal-Wallis test. A significance level of 5% was considered (α=0.05). Results: The resins showed statistically significant (p<0.001) differences regarding microhardness (V-Print Dentbase < Denture 3D+ < Probase Hot < Villacryl Rapid). No statistically significant (p=0.527) differences were found in flexural strength between the four resins. Conclusions: The printed resins had lower microhardness values than conventional resins, but all resins showed similar flexural strength.
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Sociedade Portuguesa de Estomatologia e Medicina Dentária
2022
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oai:scielo:S1646-289020220004001982023-03-21Microhardness and flexural strength of two 3D-printed denture base resinsNeves,Cristina BettencourtChasqueira,Ana FilipaRebelo,PatríciaFonseca,MarianaPortugal,JaimeBettencourt,Ana 3D-printing CAD-CAM Denture base resin Flexural strength Hardness Abstract Objectives: To evaluate the microhardness and flexural strength of printed and conventionally produced denture base acrylic resins. Methods: A total of 32 parallelepiped specimens (64×10×3.3 mm) were manufactured using two light-cured resins suitable for 3D printing (V-Print Dentbase and Denture 3D+) and two heat-cured resins for conventional production (Probase Hot and Villacryl Rapid) (n=8). After 24-h storage in water, Knoop microhardness (98.12 mN load for 30 s) and three-point flexural strength (1 kN load cell, at a crosshead speed of 5 mm/min and 50 mm between rods) were determined. Microhardness data were analyzed with one-way ANOVA followed by Tukey post-hoc tests. Flexural strength data were submitted to the Kruskal-Wallis test. A significance level of 5% was considered (α=0.05). Results: The resins showed statistically significant (p<0.001) differences regarding microhardness (V-Print Dentbase < Denture 3D+ < Probase Hot < Villacryl Rapid). No statistically significant (p=0.527) differences were found in flexural strength between the four resins. Conclusions: The printed resins had lower microhardness values than conventional resins, but all resins showed similar flexural strength.info:eu-repo/semantics/openAccessSociedade Portuguesa de Estomatologia e Medicina DentáriaRevista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial v.63 n.4 20222022-12-01info:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-28902022000400198en10.24873/j.rpemd.2022.11.883 |
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Neves,Cristina Bettencourt Chasqueira,Ana Filipa Rebelo,Patrícia Fonseca,Mariana Portugal,Jaime Bettencourt,Ana |
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Neves,Cristina Bettencourt Chasqueira,Ana Filipa Rebelo,Patrícia Fonseca,Mariana Portugal,Jaime Bettencourt,Ana Microhardness and flexural strength of two 3D-printed denture base resins |
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Neves,Cristina Bettencourt Chasqueira,Ana Filipa Rebelo,Patrícia Fonseca,Mariana Portugal,Jaime Bettencourt,Ana |
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Neves,Cristina Bettencourt |
title |
Microhardness and flexural strength of two 3D-printed denture base resins |
title_short |
Microhardness and flexural strength of two 3D-printed denture base resins |
title_full |
Microhardness and flexural strength of two 3D-printed denture base resins |
title_fullStr |
Microhardness and flexural strength of two 3D-printed denture base resins |
title_full_unstemmed |
Microhardness and flexural strength of two 3D-printed denture base resins |
title_sort |
microhardness and flexural strength of two 3d-printed denture base resins |
description |
Abstract Objectives: To evaluate the microhardness and flexural strength of printed and conventionally produced denture base acrylic resins. Methods: A total of 32 parallelepiped specimens (64×10×3.3 mm) were manufactured using two light-cured resins suitable for 3D printing (V-Print Dentbase and Denture 3D+) and two heat-cured resins for conventional production (Probase Hot and Villacryl Rapid) (n=8). After 24-h storage in water, Knoop microhardness (98.12 mN load for 30 s) and three-point flexural strength (1 kN load cell, at a crosshead speed of 5 mm/min and 50 mm between rods) were determined. Microhardness data were analyzed with one-way ANOVA followed by Tukey post-hoc tests. Flexural strength data were submitted to the Kruskal-Wallis test. A significance level of 5% was considered (α=0.05). Results: The resins showed statistically significant (p<0.001) differences regarding microhardness (V-Print Dentbase < Denture 3D+ < Probase Hot < Villacryl Rapid). No statistically significant (p=0.527) differences were found in flexural strength between the four resins. Conclusions: The printed resins had lower microhardness values than conventional resins, but all resins showed similar flexural strength. |
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Sociedade Portuguesa de Estomatologia e Medicina Dentária |
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2022 |
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http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-28902022000400198 |
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