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Water sorption, water solubility, degree of conversion, elastic indentation modulus, edge chipping resistance and flexural strength of 3D-printed denture base resins.
- Source :
-
Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2023 Jan; Vol. 137, pp. 105565. Date of Electronic Publication: 2022 Nov 11. - Publication Year :
- 2023
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Abstract
- Objectives: To investigate the water sorption (w <subscript>sp</subscript> ), water solubility (w <subscript>sl</subscript> ), degree of conversion (DC), elastic indentation modulus (E <subscript>IT</subscript> ), edge chipping resistance (ECR) and flexural strength (FS) of 3D-printed, milled and conventionally polymerized denture base resin materials.<br />Methods: Specimens (N = 540) were 3D-printed (NextDent Denture 3D+ (DEN), Fotodent Denture (FOT), Freeprint Denture (FRE), V-Print dentbase (VPR)), cut (Ivotion Base (IVO)) and molded (PalaXpress (PAL)) in three geometries. W <subscript>sp,</subscript> w <subscript>sl,</subscript> DC, E <subscript>IT</subscript> , ECR and FS were tested initially (24 h, 37 °C, H20) and after additional aging (5000 thermal cycles, 5/55 °C). Data were analyzed with Kolmogorov-Smirnov, univariate ANOVA, Kruskal-Wallis, Mann-Whitney U test and Spearman's correlation (p < 0.05) RESULTS: Most 3D-printed denture base resins showed higher w <subscript>sp</subscript> (25.31-37.94 μg/mm <superscript>3</superscript> ) and w <subscript>sl</subscript> (0.08-8.27 μg/mm <superscript>3</superscript> ), but also higher E <subscript>IT</subscript> (3.11-4.09 GPa) and FS (60.81-99.57N/mm <superscript>2</superscript> ) values than the control groups. DEN and VPR showed high DC (89.36-93.53%), E <subscript>IT</subscript> (3.77-4.09 GPa) and FS (79.65-99.57N/mm <superscript>2</superscript> ), while FOT showed low w <subscript>sp</subscript> (25.31-27.35 μg/mm <superscript>3</superscript> ) and w <subscript>sl</subscript> (1.01-3.87 μg/mm <superscript>3</superscript> ) values. In all materials, the examined parameters were affected by aging.<br />Significance: Although 3D-printed denture base resins showed promising results with regard to the observed DC and FS, only FOT and FRE surpassed the threshold values defined by the ISO norms.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Subjects :
- Solubility
Denture Bases
Printing, Three-Dimensional
Flexural Strength
Water
Subjects
Details
- Language :
- English
- ISSN :
- 1878-0180
- Volume :
- 137
- Database :
- MEDLINE
- Journal :
- Journal of the mechanical behavior of biomedical materials
- Publication Type :
- Academic Journal
- Accession number :
- 36401933
- Full Text :
- https://doi.org/10.1016/j.jmbbm.2022.105565