bone biomaterial Articles
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Investigations on drop penetration and wetting characteristics of powder-liquid systems in relation to the mixing of acrylic bone cement
This study investigated methyl methacrylate – polymethyl methacrylate powder bed interactions through droplet analyses, using model fluids and commercially available bone cement. The effects of storage temperature of liquid monomer and powder packing configuration on drop penetration time were investigated. Methyl methacrylate showed much more rapid imbibition than caprolactone due to decrease in ...
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Enhancing low cost stainless steel implants: bioactive silica–based sol–gel coatings with wollastonite particles
A hybrid organic–inorganic sol–gel coating with the addition of wollastonite particles is used as a potential solution to improve performance of low cost AISI 316L stainless steel. This work is focused on characterising the coatings by studying their synthesis and deposition, electrochemical, and in vitro and in vivo response. The coated implants presented in vitro Ca/P–rich ...
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Ultrastructural characterisation of the hydroxyapatite–coated pedicle screw and human bone interface
The early fixation of pedicle screws is crucial for improving spinal stabilisation. Firm and immediate fixation between pedicle screws and bone prevents aseptic loosening and implant failure. Coating with hydroxyapatite is a possible method to improve the fixation of metallic implants in bone. In this study, scanning transmission electron microscopy (STEM) has been used to investigate the ...
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Do You Really Know Hydroxyapatite?
As an important branch of biomedical materials, bioceramics are mainly used to manufacture hard tissue repair devices and artificial organs in vivo, and generally have good biocompatibility. According to the chemical activity in the physiological environment, bioceramics can be divided into three types: Nearly inert bioceramics, only weak or no chemical reaction occurs when exposed to the ...
By Matexcel
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Hydrothermal synthesis of coccolith rich chalk to hydroxyapatite
Calcium carbonates originating from marine sources show unique pore structure and nano–architecture, offering potential in the field of hard tissue engineering. It is hypothesised that the use of naturally–sourced raw materials for the synthesis of hydroxyapatite (HA), as a component of a hard tissue constructs, enables enhanced bone remodelling due to the biomimetic physical–chemical ...
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