Mechanical Properties of Additive-Manufactured Composite-Based Resins for Permanent Indirect Restorations: A Scoping Review

Materials, Journal Year: 2024, Volume and Issue: 17(16), P. 3951 - 3951

Published: Aug. 8, 2024

The introduction of 3D printing technology in dentistry has opened new treatment options. ongoing development different materials for these purposes recently enabled the production definitive indirect restorations via printing. To identify relevant data, a systematic search was conducted three databases, namely PubMed, Scopus, and Web Science. Additionally, manual using individual terms performed. Only English, peer-reviewed articles that encompassed vitro or vivo research on mechanical properties 3D-printed composite were included, provided they met predefined inclusion exclusion criteria. After screening 1142 articles, 14 primary studies selected. included mainly utilized digital light processing (DLP) technology, less commonly stereolithography (SLA), once PolyJet technology. material various resins, such as VarseoSmile Crown Plus (VSC) Crowntec (CT), studied, including Vickers hardness, flexural strength, elastic modulus, compressive tensile fracture resistance, wear. aimed to compare behavior tested additive composites each other, conventional composites, subtractive-manufactured materials. This scoping review examined used restorations. aim provide comprehensive overview current knowledge this topic any gaps future research. findings suggest are not yet first option restorations, due their insufficient properties. Due limited evidence, more is needed area. Specifically, there need clinical trials long-term

Language: Английский

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Characterization of Microstructure, Optical Properties, and Mechanical Behavior of a Temporary 3D Printing Resin: Impact of Post-Processing Curing Time

Published: Jan. 26, 2024

The present study aimed to characterize the microstructure of a temporary 3D printing resin (Resilab Temp), evaluating optical properties and mechanical behavior according different post-processing curing times. For analysis surface establishment best pattern, samples in bar format following ISO 4049 (25 x 10 3 mm) were designed CAD software (Rhinoceros 6.0), printed on W3D printer (Wilcos), light-cured Anycubic Photon at times (without curing, 16 minutes, 32 1 hour). structural characterization, analyses carried out FTIR (Fourier Transform Infrared Spectroscopy) Scanning Electron Microscopy (SEM). was based flexural strength tests Knoop microhardness. Color translucency performed with spectrophotometer (VITA Easy Shade Advanced 4.0), which evaluated CIELab, using gray, black, white backgrounds. All immediately after making repeated thermal aging 2 thousand cycles (5-55 °C). results obtained statistically analyzed significance level 5%. FT-IR showed about 46% degree conversion 37% center sample. higher for groups polymerized min 1h, while microhardness did not show statistical difference between groups. also differences According all this study, material, post-polymerization time hour can be suggested improve performance 3D-printed devices.

Language: Английский

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Influence of Post-Printing Polymerization Time on Flexural Strength and Microhardness of 3D Printed Resin Composite

Coatings, Journal Year: 2025, Volume and Issue: 15(2), P. 230 - 230

Published: Feb. 14, 2025

Background: The adoption of 3D printing in restorative dentistry is increasing, with the post-curing duration a material being identified as key determinant its performance. This study evaluated effect post-polymerization time on flexural strength (FS) and Vickers microhardness (VHN) 3D-printed composite. Methods: Specimens Formlabs Permanent Crown Resin were printed divided into four groups according to their time: no 20, 40, 60 min time. Flexural testing was carried out using three-point test 40 bar-shaped specimens (n = 10/group), followed by fractography observations under scanning electron microscope (SEM). Vicker also conducted disk-shaped 10/group). inorganic filler content measured ash method, morphology characterized an SEM. Statistical analyses performed adjusted ANOVA regression tests. Results: highest median FS values observed at (133.07 MPa), significant differences across all (p < 0.0001). VHN found (32.09 VHN), between A positive correlation (rho 0.7488; p 0.0001) hardness changing durations. resin composite had average 66.82% based weight. Conclusions: With limitation current vitro setup, shown lead best post-printing polymerization significantly affects Resin. Further research should explore effects different compositions, clinical conditions, curing protocols enhance general applicability these findings. Clinical implications: Extending does not inherently result improved properties. considered adjustment can impact mechanical properties

Language: Английский

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Effect of Orange Juice on the Properties of Heat-Polymerized and 3D-Printed Denture Materials

Polymers, Journal Year: 2024, Volume and Issue: 17(1), P. 56 - 56

Published: Dec. 29, 2024

This study evaluated the color stability, surface roughness, and hardness of 3D-printed heat-polymerized denture materials. A total 90 samples were prepared, with equal numbers disks. The initial hardness, values measured. After 14 days immersion in distilled water, natural orange juice, or commercial measurements repeated. Based on findings, exhibited a greater reduction Vickers (56.24 ± 15.81%) compared to (18.93 11.41%). Materials immersed juice those other solutions (43.13 23.66). Surface roughness increased by 46.66 26.8% 26.16 20.78% samples, highest increase observed (50.73 28.8%) (p < 0.001). change (ΔE) was significantly higher (ΔE = 5.05 0.28) than 3.9 0.26) demonstrates that material type play critical role determining mechanical optical properties materials, having most pronounced effect hardness.

Language: Английский

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