Elastomeric degradable biomaterials by photopolymerization-based CAD-CAM for vascular tissue engineering

Baudis, Stefan; Nehl, Franziska; Nigisch, Anneliese; Bergmeister, Helga; Bernhard, David; Stampfl, Jürgen; Liska, Robert

doi:10.1088/1748-6041/6/5/055003

Cited by 57 publications

(44 citation statements)

References 53 publications

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“…138 Another group printed positive molds for the grafts and poured the graft material into the molds. 139 All materials used were photocrosslinkable polymers based on urethane diacrylate monomers. UV light was applied to the filled molds to activate crosslinking of the materials.…”

Section: Biofunctional Surface Modificationmentioning

confidence: 99%

Strategies and Techniques to Enhance theIn SituEndothelialization of Small-Diameter Biodegradable Polymeric Vascular Grafts

Melchiorri

Hibino

Fisher

2013

Tissue Engineering Part B: Reviews

154

147

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Section: Biofunctional Surface Modificationmentioning

confidence: 99%

Strategies and Techniques to Enhance theIn SituEndothelialization of Small-Diameter Biodegradable Polymeric Vascular Grafts

Melchiorri

Hibino

Fisher

2013

Tissue Engineering Part B: Reviews

154

147

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“…The most common photopolymerization monomers are cyclic or linear epoxides (cationic) and acrylate-based monomers (radical) [1]. Acrylate-based photopolymers are important materials for cardiovascular applications [7], for in vivo drug delivery [8], and for minimally invasive procedures. Dimethacrylate-based resins have many applications in restorative dentistry, being used as adhesives and pit-and-fissure sealants, can be combined with silanecoated glass fillers to render the most widely used esthetic direct restorative material, and can be used as cementation agents and veneering materials [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Green LED as an Effective Light Source for Curing Acrylate-Based Dental Resins in Combination with Irgacure 784

Bukovinszky

Szalóki

Csarnovics

et al. 2018

Advances in Condensed Matter Physics

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Low intensity green light emitting diodes (LED) were shown to be an effective light source to induce the photopolymerization of an acrylate-based photocurable dental restorative resin mixture of bisphenol A glycerolate dimethacrylate (BisGMA), triethylene glycol dimethacrylate (TEGDMA), and diurethane dimethacrylate (UDMA), in combination with fluorinated diaryl titanocene (Irgacure 784). Dental matrices were prepared by the LED light source at different intensities. The mechanical properties, such as Vickers microhardness, compressive strength, diametric tensile strength, flexural strength, and -modulus of the created samples, were investigated. The kinetics of the photopolymerization was followed by Raman spectroscopy and conversion values were determined. It was found that, despite its narrow-emission range centered at a wavelength of 531 nm, the green LED light source is suitable for the preparation of dental matrices with good mechanical properties and high conversion values.

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“…For example, lightweight balsa has a stiffness-toweight ratio comparable to that of steel along the axial loading direction (5). Inspired by these naturally occurring cellular structures, manmade lightweight cellular materials fabricated from a wide array of solid constituents are desirable for a broad range of applications including structural components (6, 7), energy absorption (8, 9), heat exchange (10, 11), catalyst supports (12), filtration (13,14), and biomaterials (15,16). However, the degradation in mechanical properties can be drastic as density decreases (17,18).…”

mentioning

confidence: 99%

Ultralight, ultrastiff mechanical metamaterials

Zheng

Lee

Weisgraber

et al. 2014

Science

1,758

1,134

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Abstract:The mechanical properties of ordinary materials degrade substantially with reduced density, due to the bending of their structural elements under applied load. We report a class of micro-architected materials that maintain a nearly constant stiffness per unit mass density, even at ultra-low density. This performance derives from a network of nearly isotropic microscale unit cells with high structural connectivity and nanoscale features, whose structural members are designed to carry loads in tension or compression. Production of these microlattices, with constituent materials ranging from polymers to metals and ceramics, is made possible by using projection microstereolithography, an additive micromanufacturing technique, combined with nanoscale coating and postprocessing. We found that these materials exhibit ultra-stiff properties across more than three orders of magnitude in density, regardless of the constituent material. One Sentence Summary:We report a class of micro-architected materials that change their stiffness linearly with reduced density.Main Text: Nature has found a way to achieve mechanically efficient materials by evolving cellular structures. Natural cellular materials, including honeycomb (1) (wood, cork) and foamlike structures, such as trabecular bone (2), plant parenchyma (3), and sponge (4), combine low weight with superior mechanical properties. For example, lightweight balsa has a stiffness-toweight ratio comparable to that of steel along the axial loading direction (5). Inspired by these naturally occurring cellular structures, manmade lightweight cellular materials fabricated from a wide array of solid constituents are desirable for a broad range of applications including structural components (6, 7), energy absorption (8, 9), heat exchange (10, 11), catalyst supports (12), filtration (13,14), and biomaterials (15,16). However, the degradation in mechanical properties can be drastic as density decreases (17,18). A number of examples among recently reported low-density materials include graphene elastomers (19), metallic micro-lattices (20), carbon nanotube foams (21), and silica aerogels (22,23). For instance, the Young's modulus of low-density silica aerogels (22, 23) decreases to 10 kPa (10 -5 % of bulk ) at a density of less than 10 mg/cm 3 (< 0.5% of bulk). This loss of mechanical performance is because most natural and engineered cellular solids with random porosity, particularly at relative densities less than 0.1%, exhibit a quadratic or stronger scaling relationship between Young's modulus and density as well as between strength and density. Namely, E/E s ~ (/ s ) n and  y  ys ~ (/ s ) n , where E is Young's modulus,  is density,  y is yield strength, and s denotes the respective bulk value of the solid constituent material property. The power n of the scaling relationship between relative material density and the relative mechanical property depends on the material's microarchitecture. Conventional cellular foam materials with stochastic porosity are known to...

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Elastomeric degradable biomaterials by photopolymerization-based CAD-CAM for vascular tissue engineering

Cited by 57 publications

References 53 publications

Strategies and Techniques to Enhance theIn SituEndothelialization of Small-Diameter Biodegradable Polymeric Vascular Grafts

Strategies and Techniques to Enhance theIn SituEndothelialization of Small-Diameter Biodegradable Polymeric Vascular Grafts

Green LED as an Effective Light Source for Curing Acrylate-Based Dental Resins in Combination with Irgacure 784

Ultralight, ultrastiff mechanical metamaterials

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