Comparative Evaluation of Mechanical Properties of Dental Nanomaterials

This study examines the properties of nanobased dental restorative materials with nanoindentation method in a precise, repeatable, and comparable way. Microhybrid and nanohybrid composites, conventional glass ionomer materials, and light cured nanoionomer materials were utilised for the study. Speci...

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Bibliographic Details
Published in:Journal of nanomaterials 2017-01, Vol.2017 (2017), p.1-8
Main Authors: Peskersoy, Cem, Culha, Osman
Format: Article
Language:English
Subjects:
Analysis of variance
Atoms & subatomic particles
Composite materials
Dental materials
Dentistry
Elasticity
Glass
Hardness
Ionomers
Manufacturers
Mechanical properties
Methods
Nanocomposites
Nanoindentation
Nanomaterials
Nanostructure
Shear strength
Software
Studies
University faculty
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Summary:This study examines the properties of nanobased dental restorative materials with nanoindentation method in a precise, repeatable, and comparable way. Microhybrid and nanohybrid composites, conventional glass ionomer materials, and light cured nanoionomer materials were utilised for the study. Specimen discs ( r = 10 mm, h = 2 mm) were prepared to test the hardness, modulus of elasticity, yield strength, and fracture toughness values for each sample in a nanoindentation device with an atomic force microscopy add-on ( n = 25 ). Comparative analyses were performed by one-way ANOVA and post hoc Tukey tests. The hardness and modulus of elasticity values of nanocomposite were higher (2.58 GPa and 32.86 GPa, resp.) than those of other dental materials. Although glass ionomer exhibited a hardness that was similar to a nanoionomer (0.81 versus 0.87 GPa), glass ionomer had the lowest fracture toughness value ( K c = 0.83 MPa/mm0.5). The mechanical properties of resin composites improve with additional nanoscale fillers, unlike the glass ionomer material.
ISSN:1687-4110
1687-4129
DOI:10.1155/2017/6171578