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Influence of the mechanical properties of composites for indirect dental restorations on pattern failure.

Authors: Michel Espinosa, Klymus; Rosemary Sadami Arai, Shinkai; Eduardo Gonçalves, Mota; Hugo Mitsuo Silva, Oshima; Ana Maria, Spohr; Luiz Henrique, Burnett;

Influence of the mechanical properties of composites for indirect dental restorations on pattern failure.

Abstract

This study evaluated the fracture pattern of four composites for indirect dental restoration relating to three-point flexural strength, compressive strength and modulus of elasticity (Solidex, Artglass, belleGlass, and Targis). Ten specimens of each composite were tested in a universal testing machine at 0.5 mm/min crosshead speed for flexural strength and 1mm/min for compressive strength. Fracture pattern was classified as complete or partial fracture. Modulus of elasticity was calculated from flexural strength data. Composites polymerized under high temperatures (belleGlass and Targis) had higher flexural strength and elastic modulus values than composites polymerized by light (Artglass and Solidex). However, they failed earlier under compression because they were more rigid and showed partial fracture in the material bulk.

Keywords

Hot Temperature, Compressive Strength, Materials Testing, Polyurethanes, Acrylic Resins, Dental Restoration Failure, Dental Restoration, Permanent, Pliability, Composite Resins, Elasticity

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Powered by OpenAIRE graph
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Average
Average
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