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.

Saved in:
Bibliographic Details
Main Authors: Neves,Cristina Bettencourt, Chasqueira,Ana Filipa, Rebelo,Patrícia, Fonseca,Mariana, Portugal,Jaime, Bettencourt,Ana
Format: Digital revista
Language:English
Published: Sociedade Portuguesa de Estomatologia e Medicina Dentária 2022
Online Access:http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-28902022000400198
Tags: Add Tag
No Tags, Be the first to tag this record!
id oai:scielo:S1646-28902022000400198
record_format ojs
spelling 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
institution SCIELO
collection OJS
country Portugal
countrycode PT
component Revista
access En linea
databasecode rev-scielo-pt
tag revista
region Europa del Sur
libraryname SciELO
language English
format Digital
author Neves,Cristina Bettencourt
Chasqueira,Ana Filipa
Rebelo,Patrícia
Fonseca,Mariana
Portugal,Jaime
Bettencourt,Ana
spellingShingle 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
author_facet Neves,Cristina Bettencourt
Chasqueira,Ana Filipa
Rebelo,Patrícia
Fonseca,Mariana
Portugal,Jaime
Bettencourt,Ana
author_sort 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.
publisher Sociedade Portuguesa de Estomatologia e Medicina Dentária
publishDate 2022
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S1646-28902022000400198
work_keys_str_mv AT nevescristinabettencourt microhardnessandflexuralstrengthoftwo3dprinteddenturebaseresins
AT chasqueiraanafilipa microhardnessandflexuralstrengthoftwo3dprinteddenturebaseresins
AT rebelopatricia microhardnessandflexuralstrengthoftwo3dprinteddenturebaseresins
AT fonsecamariana microhardnessandflexuralstrengthoftwo3dprinteddenturebaseresins
AT portugaljaime microhardnessandflexuralstrengthoftwo3dprinteddenturebaseresins
AT bettencourtana microhardnessandflexuralstrengthoftwo3dprinteddenturebaseresins
_version_ 1762929191786905600