Printable and Machinable Dental Restorative Composites for CAD/CAM Application-Comparison of Mechanical Properties, Fractographic, Texture and Fractal Dimension Analysis

Overview

Journal Materials (Basel)

Publisher MDPI

Date 2021 Sep 10

PMID 34501009

Citations 21

Authors

Wojciech Grzebieluch

Piotr Kowalewski

Dominika Grygier

Malgorzata Rutkowska-Gorczyca

Marcin Kozakiewicz

Kamil Jurczyszyn

Affiliations

Soon will be listed here.

Abstract

Thanks to the continuous development of light-curing resin composites it is now possible to print permanent single-tooth restorations. The purpose of this study was to compare resin composites for milling -Gandio Blocks (GR), Brilliant Crios (CR) and Enamic (EN) with resin composite for 3D printing-Varseo Smile Crown plus (VSC). Three-point bending was used to measure flexural strength (σ) and flexural modulus (E). The microhardness was measured using a Vickers method, while fractographic, microstructural, texture and fractal dimension (FD) analyses were performed using SEM, optical microscope and picture analysis methods. The values of σ ranged from 118.96 (±2.81) MPa for EN to 186.02 (±10.49) MPa for GR, and the values of E ranged from 4.37 (±0.8) GPa for VSC to 28.55 (±0.34) GPa for EN. HV01 ranged from 25.8 (±0.7) for VSC to 273.42 (±27.11) for EN. The filler content ranged from 19-24 vol. % for VSC to 70-80 vol. % for GR and EN. The observed fractures are typical for brittle materials. The correlation between FD of materials microstructure and E was observed. σ of the printed resin depends on layers orientation and is significantly lower than σ of GR and CR. E of the printed material is significantly lower than E of blocks for milling.

Citing Articles

Mechanical Properties of 3D Printed vs. Subtractively Manufactured Composite Resins for Permanent Restorations: A Systematic Review.

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Flexural Strength, Fatigue Behavior, and Microhardness of Three-Dimensional (3D)-Printed Resin Material for Indirect Restorations: A Systematic Review.

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Mechanical analysis of 3D printed dental restorations manufactured using different resins and validation with FEM analysis.

Gul B, Demirci F, Baki N, Bahce E, Ozcan M BMC Oral Health. 2025; 25(1):131.

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Marginal Discrepancy and Internal Fit of 3D-Printed Versus Milled Laminate Veneers: An In Vitro Study.

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