New Materials for an Implantable Blood Pump. Rotary blood pumps are at the leading edge of heart assist technology. VentrAssist has developed an innovative rotary blood pump with a hydro-dynamically suspended impeller. Advanced surface modifications will enable the device to be fabricated from polymers; this will make the device light, more compatible with the human body and less costly to produce. Surface treatments and coatings will be applied using ion implantation, to impart the required ....New Materials for an Implantable Blood Pump. Rotary blood pumps are at the leading edge of heart assist technology. VentrAssist has developed an innovative rotary blood pump with a hydro-dynamically suspended impeller. Advanced surface modifications will enable the device to be fabricated from polymers; this will make the device light, more compatible with the human body and less costly to produce. Surface treatments and coatings will be applied using ion implantation, to impart the required dimensional stability, impermeability and wear resistance. Following sophisticated experiments of modified materials, the best candidates will be used in prototype devices, for final selection of the optimal materials for the new device.Read moreRead less
Design Optimisation for Fabrication of Ceramic Prosthetic Devices. The project aims to develop computer aided design and fabrication for ceramic prosthesis. It will help establish a world-class biomedical instrumentation company having part of its research and development in Australia. The study will not only foster domestic research expertise, but also provide the local prosthetic community and biomedical industry with an opportunity to participate in further innovation of biomaterials, biomedi ....Design Optimisation for Fabrication of Ceramic Prosthetic Devices. The project aims to develop computer aided design and fabrication for ceramic prosthesis. It will help establish a world-class biomedical instrumentation company having part of its research and development in Australia. The study will not only foster domestic research expertise, but also provide the local prosthetic community and biomedical industry with an opportunity to participate in further innovation of biomaterials, biomedical software and equipment. The outcomes will directly benefit the Australian prosthetic profession. Improvement in prosthesis restorative longevity for our increasing ageing population will support the national research goal of ageing well, ageing productively.Read moreRead less
Bioactive Polymers for Wound Healing Applications. VitroGroR is a growth factor complex which enhances cell growth and migration, and hence has great potential for treating wounds. Tissue Therapies, which holds the rights to commercialization of VitroGroR, is seeking to develop methods of delivering VitroGroR in its active form to the wound environment. Two solutions to this problem will be developed in this project; a bioactive bandage containing a novel combination of microspheres and a hydrog ....Bioactive Polymers for Wound Healing Applications. VitroGroR is a growth factor complex which enhances cell growth and migration, and hence has great potential for treating wounds. Tissue Therapies, which holds the rights to commercialization of VitroGroR, is seeking to develop methods of delivering VitroGroR in its active form to the wound environment. Two solutions to this problem will be developed in this project; a bioactive bandage containing a novel combination of microspheres and a hydrogel matrix, and secondly an in-situ polymerisable matrix for treatment of deep wounds. The growth factor complex will be protected from aggressive proteases through encapsulation within microspheres, and the use of MMP-inhibiting comonomers.Read moreRead less
Understanding glycopolymer interactions with the extracellular matrix. This project aims to advance knowledge of the biochemical and biophysical structure of the endothelial glycocalyx, a dynamic cell surface extracellular matrix rich in proteoglycans and glycosaminoglycans. It will be the first to explore how charged glycopolymers interact with this dynamic interface with the goal to develop a model of the glycocalyx lifecycle. This project is expected to enable the transfer of skills, knowledg ....Understanding glycopolymer interactions with the extracellular matrix. This project aims to advance knowledge of the biochemical and biophysical structure of the endothelial glycocalyx, a dynamic cell surface extracellular matrix rich in proteoglycans and glycosaminoglycans. It will be the first to explore how charged glycopolymers interact with this dynamic interface with the goal to develop a model of the glycocalyx lifecycle. This project is expected to enable the transfer of skills, knowledge and ideas as well as advanced research and industrial training for young scientists. Knowledge derived from this project is expected to enable future innovation in molecules with tailored interactions with the glycocalyx with significant benefits for researchers, manufacturers and end users. Read moreRead less
Microstructural-Functional Effect of Silver Diammine Fluoride on Apatites. This project aims to develop a fundamental understanding at the nanostructural level of the factors that contribute to the enhanced mineralisation and mechanical properties of dentine and enamel following the treatment with silver diammine fluoride (SDF). A variety of advanced nanomechanical, tomographic and microscopic techniques will be used to characterise sound, carious and SDF treated tissue. The new biomechanical ev ....Microstructural-Functional Effect of Silver Diammine Fluoride on Apatites. This project aims to develop a fundamental understanding at the nanostructural level of the factors that contribute to the enhanced mineralisation and mechanical properties of dentine and enamel following the treatment with silver diammine fluoride (SDF). A variety of advanced nanomechanical, tomographic and microscopic techniques will be used to characterise sound, carious and SDF treated tissue. The new biomechanical evidence on the underlying mechanisms, alternative protocols, delivery systems enable to optimise the treatment. The scientific insights into arresting/repairing damage processes will provide critical data for developing minimal intervention protocols for pediatric and geriatric populations.Read moreRead less
Application of Silver Coatings to medical Devices for Antimicrobial Properties using Electroless Deposition. Silver compounds, eg. in topical creams, can be used to treat chronic infections. The results are mediocre, and there may be significant side effects. Metallic silver when coated on bandages or medical devices is gaining wider acceptance, but the dissolution rate muct be improved to minimise infection. In this project an electroless silver coating process will be developed, with bath ch ....Application of Silver Coatings to medical Devices for Antimicrobial Properties using Electroless Deposition. Silver compounds, eg. in topical creams, can be used to treat chronic infections. The results are mediocre, and there may be significant side effects. Metallic silver when coated on bandages or medical devices is gaining wider acceptance, but the dissolution rate muct be improved to minimise infection. In this project an electroless silver coating process will be developed, with bath chemistry and coating conditions optimised for an ideal dissolution rate. This project will lead to the development of improved medical devices that will have significant social and economic benefits for Australia.Read moreRead less
Development of a Prothrombogenic Bone Graft Substitute. The clinical demand for bone is massive and to counter this bone can be either harvested from the patient or bone substitutes are used. The success or failure of a bone substitute is determined the instant it come into contact with blood. The surfaces of traditional biomaterials induce a foreign body reaction. The aim of this project is to test the bone forming capacity of a biomaterial that is optimised to produce a natural response from ....Development of a Prothrombogenic Bone Graft Substitute. The clinical demand for bone is massive and to counter this bone can be either harvested from the patient or bone substitutes are used. The success or failure of a bone substitute is determined the instant it come into contact with blood. The surfaces of traditional biomaterials induce a foreign body reaction. The aim of this project is to test the bone forming capacity of a biomaterial that is optimised to produce a natural response from the blood. This response will lead to the formation new viable tissue and eventually bone. Such a material will cause faster bone healing, less pain from graft sites, shorter hospital stays and shorter waiting lists. Read moreRead less
Surface engineering of biomaterials for optimal bone bonding characteristics. The ideal bone-implant material is hydroxyapatite. Chemically similar to bone mineral, hydroxyapatite is capable of inducing bone ongrowth. An ideal surface coating for metal hip implants, plasma spraying has been the preferred commercial hydroxyapatite coating technique. Until recently, it was always presumed that the bioactivity of hydroxyapatite resulted from its surface chemistry. However, a recent study has shown ....Surface engineering of biomaterials for optimal bone bonding characteristics. The ideal bone-implant material is hydroxyapatite. Chemically similar to bone mineral, hydroxyapatite is capable of inducing bone ongrowth. An ideal surface coating for metal hip implants, plasma spraying has been the preferred commercial hydroxyapatite coating technique. Until recently, it was always presumed that the bioactivity of hydroxyapatite resulted from its surface chemistry. However, a recent study has shown that the bioactivity of HAp coatings strongly correlates with surface roughness on the scale of bone cells. This project will explore cell-attachment behaviour for hydroxyapatite coatings prepared by plasma spraying compared with engineered surface morphology/chemistry by microlithography and vapour coating.Read moreRead less
Bioinks that Advance 3D bioprinting of cells to the 4th dimension. The aim of this research is to provide a simple method for creating complex 3D cell cultures for in vitro cell based assays using 3D printing. A versatile polymer system as a bioink made from entirely commercially available components, will be advanced that gives a full range of soft tissue mimics and which can be dynamically change on-demand after printing of the 3D cell cultures. The latter will provide in vitro mimics of in vi ....Bioinks that Advance 3D bioprinting of cells to the 4th dimension. The aim of this research is to provide a simple method for creating complex 3D cell cultures for in vitro cell based assays using 3D printing. A versatile polymer system as a bioink made from entirely commercially available components, will be advanced that gives a full range of soft tissue mimics and which can be dynamically change on-demand after printing of the 3D cell cultures. The latter will provide in vitro mimics of in vivo events never previously possible with more realistic models of what is found in vivo. Applications are in fundamental cell biology, studying diseases and developing new drugs. The outcomes from this research will be new knowledge on designing cheap extracellular matrix mimics and high throughout 3D cell assays.Read moreRead less
Quantification of the Remineralisation of Enamel. This project has three specific aims:
1. To quantify the ultrastructure and mechanisms of remineralisation of enamel using scanning and transmission electron microscopy.
2. To determine the mechanical properties of remineralised tissue and compare with those of sound enamel.
3. To develop an in-vivo optical fibre probe for monitoring and quantifying the changes of mineralised carious tissue during remineralisation.
This project will enable ....Quantification of the Remineralisation of Enamel. This project has three specific aims:
1. To quantify the ultrastructure and mechanisms of remineralisation of enamel using scanning and transmission electron microscopy.
2. To determine the mechanical properties of remineralised tissue and compare with those of sound enamel.
3. To develop an in-vivo optical fibre probe for monitoring and quantifying the changes of mineralised carious tissue during remineralisation.
This project will enable patients prone to orthodontic induced root resorption to be identified and also to assist with validating repair of enamel tooth structure in a non-surgical manner. It is anticipated to result in the development of a novel fibre optic instrument with applications beyond dentistry.
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