2017
DOI: 10.5604/01.3001.0010.4870
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Systematic study of Ethylene-Vinyl Acetate (EVA) in the manufacturing of protector devices for the orofacial system

Abstract: Fracture of facial bones and dental elements, and laceration of soft tissue, have increased in sports over recent years. Dentist is the only professional responsible for the mouth protection design, the knowledge about suitable materials is essential. EVA is a thermoplastic material, available in the market, easy of handling and processing, and low-cost. However, it is important to understand the mechanical properties and ability to absorb and to dissipate the impact energy, when this material is submitted to … Show more

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Cited by 5 publications
(8 citation statements)
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References 31 publications
(25 reference statements)
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“…Based on equation (23), depth and shear strains on the beveled section are resolved by gradient estimation. From figure 15, both the depth and shear strain fields appear to be non-uniform.…”
Section: Experiments Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Based on equation (23), depth and shear strains on the beveled section are resolved by gradient estimation. From figure 15, both the depth and shear strain fields appear to be non-uniform.…”
Section: Experiments Resultsmentioning
confidence: 99%
“…where ξ represents the shear strain of V, c f is a sum integration constant ( ´c1 ε y dv and ´ξdu), and (u C , v C ) stands for the image plane of the CCD camera in the OCT system, which is mapped into the beveled plane (u, v) with scale factors (1/α, 1/β). Equation (23) shows that partial derivatives of ∆Λ or V include the depth-resolved strain ε y and shear strain ξ. If V is divided by ε z , equation ( 24) is given as…”
Section: In-plane U-strainsmentioning
confidence: 99%
“…The FE simulations can only be used to observe regions that may be susceptible to damage. It is important to note that there is a wide range of material properties for epoxy and EVA reported to be dependent on composition and curing process in the literature 6,36. If a more accurate stress approximation is required, a more detailed material characterisation is necessary for the component of interest.…”
Section: Discussionmentioning
confidence: 99%
“…4c. Since the focus of this study was on the surface conformity of the EVA structures, the EVA was nominally assigned the following isotropic material properties: Young’s modulus of 25 MPa,20 material density of 950 kg/m 3 20 and Poisson’s ratio of 0.4 6. The geometries of the EVA structures were considered by fixing the displacements of the surfaces on the front face of the EVA structure (surfaces facing the LED), and essentially behaved as rigid bodies.…”
Section: Methodsmentioning
confidence: 99%
“…In the present work, the combination of materials was achieved by preparing sandwich structures in which TPU was placed as the core in every specimen, as described in the Materials and Methods section. The combination of soft and rigid polymers is more likely to be successful, as pointed out by studies with the bulk EVA copolymer [50].…”
Section: Mechanical Properties Of Printed Sandwich Structuresmentioning
confidence: 99%