Flexural Properties of Three Novel 3D-Printed Dental Resins Compared to Other Resin-Based Restorative Materials

Francesco De Angelis; Maurizio D’Amario; Ali Jahjah; Massimo Frascaria; Mirco Vadini; Edoardo Sorrentino; Virginia Biferi; Camillo D’Arcangelo

doi:10.3390/prosthesis6030043

Prosthesis (Jun 2024)

Flexural Properties of Three Novel 3D-Printed Dental Resins Compared to Other Resin-Based Restorative Materials

Francesco De Angelis,
Maurizio D’Amario,
Ali Jahjah,
Massimo Frascaria,
Mirco Vadini,
Edoardo Sorrentino,
Virginia Biferi,
Camillo D’Arcangelo

Affiliations

Francesco De Angelis: Unit of Restorative Dentistry and Endodontics, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, Italy
Maurizio D’Amario: Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
Ali Jahjah: Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
Massimo Frascaria: Department of Life, Health and Environmental Sciences, University of L’Aquila, 67100 L’Aquila, Italy
Mirco Vadini: Unit of Restorative Dentistry and Endodontics, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, Italy
Edoardo Sorrentino: Unit of Restorative Dentistry and Endodontics, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, Italy
Virginia Biferi: Unit of Restorative Dentistry and Endodontics, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, Italy
Camillo D’Arcangelo: Unit of Restorative Dentistry and Endodontics, Department of Medical, Oral and Biotechnological Sciences, University of Chieti, 66100 Chieti, Italy

DOI: https://doi.org/10.3390/prosthesis6030043
Journal volume & issue: Vol. 6, no. 3
pp. 619 – 630

Abstract

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To evaluate the flexural strength and flexural modulus of three recently introduced 3D-Printed resins and compare them with the flexural properties of other well known, already commercialized, and extensively used resin based dental materials. Three 3D-printed dental resins, a fiber-reinforced epoxy resin, a heat-cured bis-acrylate-based composite resin, two conventional CAD/CAM PMMA, and a graphene-reinforced CAD/CAM PMMA, were selected for this study. Ten prismatic-shaped specimens (2 × 2 × 25 mm) were fabricated for each material (n = 10). All specimens underwent a three-point bending test using a universal testing machine and were loaded until fracture. Flexural strength (MPa) and flexural modulus (MPa) mean values were calculated and compared using the on ranks One-Way ANOVA test. Scanning electron microscope analysis of the 3D-printed resins was performed. Significantly different flexural properties were recorded among the tested materials. The fiber-reinforced epoxy resin exhibited the highest flexural strength (418.0 MPa) while, among the 3D-printed resins, the best flexural strength was achieved by Irix-Max (135.0 MPa). Irix-Plus and Temporis led to the lowest mean flexural strength values (103.9 MPa and 101.3 MPa, respectively) of all the CAD/CAM milled materials, except for the conventional PMMA by Sintodent (88.9 MPa). The fiber-reinforced epoxy resin also showed the highest flexural modulus (14,672.2 MPa), followed by the heat-cured bis-acrylate composite (10,010.1 MPa). All 3D-printed resins had a higher flexural modulus than the conventional PMMA materials. CAD/CAM fiber-reinforced epoxy resin excels in flexural strength, with Irix-Max showing promising flexural properties, which could encourage its use for permanent restorations. Caution is needed with Irix-Plus and Temporis due to their lower flexural strength compared to other traditional materials.

Published in Prosthesis

ISSN: 2673-1592 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Medicine
Website: https://www.mdpi.com/journal/prosthesis

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