Mechanical properties and DIC analyses of CAD/CAM materials

Thiago Porto; Renato Roperto; Anna Akkus; Ozan Akkus; Sizenando Porto-Neto; Sorin Teich; Lisa Lang; Edson Campos

doi:10.4317/jced.53014

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Mechanical properties and DIC analyses of CAD/CAM materials

Journal article

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Mechanical properties and DIC analyses of CAD/CAM materials

Thiago Porto, Renato Roperto, Anna Akkus, Ozan Akkus, Sizenando Porto-Neto, Sorin Teich, Lisa Lang and Edson Campos

Journal of clinical and experimental dentistry, Vol.8(5), pp.e512-e516

12/01/2016

DOI: 10.4317/jced.53014

PMCID: PMC5149083

PMID: 27957262

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Abstract

This study compared two well-known computer-aided-design/computer-aided-manufactured (CAD/CAM) blocks (Paradigm MZ100 [3M ESPE] and Vitablocs Mark II [Vita] in terms of fracture toughness (Kic), index of brittleness (BI) and stress/strain distributions. Three-point bending test was used to calculate the fracture toughness, and the relationship between the Kic and the Vickers hardness was used to calculate the index of brittleness. Additionally, digital image correlation (DIC) was used to analyze the stress/strain distribution on both materials. The values for fracture toughness obtained under three-point bending were 1.87Pa√m (±0.69) for Paradigm MZ100 and 1.18Pa√m (±0.17) for Vitablocs Mark II. For the index of brittleness, the values for Paradigm and Vitablocs were 73.13μm-1/2 (±30.72) and 550.22μm-1/2 (±82.46). One-way ANOVA was performed to find differences (α=0.05) and detected deviation between the stress/strain distributions on both materials. Both CAD/CAM materials tested presented similar fracture toughness, but, different strain/stress distributions. Both materials may perform similarly when used in CAD/CAM restorations. Ceramic, CAD/CAM, hybrid materials, composite resin, fracture toughness.

Details

Title: Subtitle: Mechanical properties and DIC analyses of CAD/CAM materials
Creators: Thiago Porto - Case Western Reserve University
Renato Roperto - Case Western Reserve University
Anna Akkus - Case Western Reserve University
Ozan Akkus - Case Western Reserve University
Sizenando Porto-Neto - Universidade Estadual Paulista (Unesp)
Sorin Teich - Case Western Reserve University
Lisa Lang - Case Western Reserve University
Edson Campos - Universidade Estadual Paulista (Unesp)
Resource Type: Journal article
Publication Details: Journal of clinical and experimental dentistry, Vol.8(5), pp.e512-e516
DOI: 10.4317/jced.53014
PMID: 27957262
PMCID: PMC5149083
ISSN: 1989-5488
eISSN: 1989-5488
Language: English
Date published: 12/01/2016
Academic Unit: Operative Dentistry
Record Identifier: 9984420941102771

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