The Experts below are selected from a list of 2298 Experts worldwide ranked by ideXlab platform
A. Lucas-girot - One of the best experts on this subject based on the ideXlab platform.
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Calcification mechanism and bony bonding studies of Calcium carbonate and composite Aluminosilicate/Calcium phosphate applied as biomaterials by using radioactivation methods
Journal of Radioanalytical and Nuclear Chemistry, 2007Co-Authors: H. Oudadesse, A. C. Derrien, A. Lucas-girot, S. Martin, G. CathelieauAbstract:Bony grafts are used as a filling biomaterial for defective bone. The introduction of new range of synthetic materials offers to surgeons additional possibilities to avoid virus transmission risks by using natural grafts in bony surgery. In this work, two materials, synthetic Calcium carbonate and composite Aluminosilicate/Calcium phosphate were synthesized by an original method and experimented “in vivo” as biomaterials for bony filling. Extracted biopsies were studied by several physico chemical and biological methods. The aim was to evaluate the kinetic resorption and bioconsolidation of these materials. We focused on the bioconsolidation between implant and bone by realising cartographies from the implant to the bone and on the calcification mechanism by determination of the origin of Ca and Sr responsible of the neo-formed bone. Neutron activation analysis (NAA), radiotracers ^45Ca* and ^85Sr* and proton-induced X-ray emission (PIXE) were used. Concerning the synthetic Calcium carbonate, results show that twelve months after implantation, the mineral composition of implant becomes similar to that of the mature bone. The neoformed bone is composed with Ca and Sr coming from the organism when the Ca and Sr of the implant were progressively eliminated. Concerning the composite geopolymer/Calcium phosphate, PIXE and histological studies reveal the intimate links between the bone and the implant starting with the first month after implantation.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500°C). Results evidenced the ability to control the pH, the high level of porosity (»70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500degreesC). Results evidenced the ability to control the pH, the high level of porosity (approximate to70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
A. C. Derrien - One of the best experts on this subject based on the ideXlab platform.
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Surface and interface investigation of Aluminosilicate biomaterial by the “in vivo” experiments
Applied Surface Science, 2008Co-Authors: Hassane Oudadesse, A. C. Derrien, S. Martin, H. Chaair, Guy CathelineauAbstract:Abstract Porous mixtures of Aluminosilicate/Calcium phosphate have been studied for biomaterials applications. Aluminosilicates formed with an inorganic polymeric constitution present amorphous zeolites because of their 3D network structure and present the ability to link to bone matrix. Amorphous geopolymers of the potassium–poly(sialate)–nanopolymer type were synthesised at low temperature and studied for their use as potential biomaterials. They were mixed with 13% weight of Calcium phosphate like biphasic hydroxyapatite and β-triCalcium phosphate. In this study, “in vivo” experiments were monitored to evaluate the biocompatibility, the surface and the interface behaviour of these composites when used as bone implants. Moreover, it has been demonstrated using histological and physicochemical studies that the developed materials exhibited a remarkable bone bonding when implanted in a rabbit's thighbone for a period of 1 month. The easy synthesis conditions (low temperature) of this composite and the fast intimate links with bone constitute an improvement of synthetic bone graft biomaterial.
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Calcification mechanism and bony bonding studies of Calcium carbonate and composite Aluminosilicate/Calcium phosphate applied as biomaterials by using radioactivation methods
Journal of Radioanalytical and Nuclear Chemistry, 2007Co-Authors: H. Oudadesse, A. C. Derrien, A. Lucas-girot, S. Martin, G. CathelieauAbstract:Bony grafts are used as a filling biomaterial for defective bone. The introduction of new range of synthetic materials offers to surgeons additional possibilities to avoid virus transmission risks by using natural grafts in bony surgery. In this work, two materials, synthetic Calcium carbonate and composite Aluminosilicate/Calcium phosphate were synthesized by an original method and experimented “in vivo” as biomaterials for bony filling. Extracted biopsies were studied by several physico chemical and biological methods. The aim was to evaluate the kinetic resorption and bioconsolidation of these materials. We focused on the bioconsolidation between implant and bone by realising cartographies from the implant to the bone and on the calcification mechanism by determination of the origin of Ca and Sr responsible of the neo-formed bone. Neutron activation analysis (NAA), radiotracers ^45Ca* and ^85Sr* and proton-induced X-ray emission (PIXE) were used. Concerning the synthetic Calcium carbonate, results show that twelve months after implantation, the mineral composition of implant becomes similar to that of the mature bone. The neoformed bone is composed with Ca and Sr coming from the organism when the Ca and Sr of the implant were progressively eliminated. Concerning the composite geopolymer/Calcium phosphate, PIXE and histological studies reveal the intimate links between the bone and the implant starting with the first month after implantation.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500°C). Results evidenced the ability to control the pH, the high level of porosity (»70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500degreesC). Results evidenced the ability to control the pH, the high level of porosity (approximate to70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
H. Oudadesse - One of the best experts on this subject based on the ideXlab platform.
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Calcification mechanism and bony bonding studies of Calcium carbonate and composite Aluminosilicate/Calcium phosphate applied as biomaterials by using radioactivation methods
Journal of Radioanalytical and Nuclear Chemistry, 2007Co-Authors: H. Oudadesse, A. C. Derrien, A. Lucas-girot, S. Martin, G. CathelieauAbstract:Bony grafts are used as a filling biomaterial for defective bone. The introduction of new range of synthetic materials offers to surgeons additional possibilities to avoid virus transmission risks by using natural grafts in bony surgery. In this work, two materials, synthetic Calcium carbonate and composite Aluminosilicate/Calcium phosphate were synthesized by an original method and experimented “in vivo” as biomaterials for bony filling. Extracted biopsies were studied by several physico chemical and biological methods. The aim was to evaluate the kinetic resorption and bioconsolidation of these materials. We focused on the bioconsolidation between implant and bone by realising cartographies from the implant to the bone and on the calcification mechanism by determination of the origin of Ca and Sr responsible of the neo-formed bone. Neutron activation analysis (NAA), radiotracers ^45Ca* and ^85Sr* and proton-induced X-ray emission (PIXE) were used. Concerning the synthetic Calcium carbonate, results show that twelve months after implantation, the mineral composition of implant becomes similar to that of the mature bone. The neoformed bone is composed with Ca and Sr coming from the organism when the Ca and Sr of the implant were progressively eliminated. Concerning the composite geopolymer/Calcium phosphate, PIXE and histological studies reveal the intimate links between the bone and the implant starting with the first month after implantation.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500°C). Results evidenced the ability to control the pH, the high level of porosity (»70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500degreesC). Results evidenced the ability to control the pH, the high level of porosity (approximate to70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
Jean-christophe Sangleboeuf - One of the best experts on this subject based on the ideXlab platform.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500°C). Results evidenced the ability to control the pH, the high level of porosity (»70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500degreesC). Results evidenced the ability to control the pH, the high level of porosity (approximate to70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
P. Briard - One of the best experts on this subject based on the ideXlab platform.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500°C). Results evidenced the ability to control the pH, the high level of porosity (»70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
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Thermal behaviour of composites Aluminosilicate-Calcium phosphates
Journal of Thermal Analysis and Calorimetry, 2004Co-Authors: A. C. Derrien, H. Oudadesse, Jean-christophe Sangleboeuf, P. Briard, A. Lucas-girotAbstract:A new type of Aluminosilicate matrix Calcium phosphate crystallites composites (ACPC) was synthesized and studied for osseous bone applications. The room temperature synthesis of the Aluminosilicate matrix and composites was described. Thermal treatments of compounds allowed the adaptability of some parameters (pH, porosity and mechanical properties). Structure of heat treated composites were characterized by XRD and FTIR. The influence of thermal treatment on the mechanical properties, the porosity and the pH was studied for two temperatures (250 and 500degreesC). Results evidenced the ability to control the pH, the high level of porosity (approximate to70%) and the good mechanical properties, allowing to consider that ACPC are potential biomaterials for osseous bone application.
