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- W2048506709 abstract "In order to improve the reliability and the mechanical properties of orthopaedic hip prosthesis, new ceramic composites starting with nanosized powders of alumina and zirconia have been recently developed. The aim of the present study was to investigate the biological tolerance of one of these sintered ceramics and of its alumina and zirconia constitutive nanosized powders with both in vitro and in vivo approaches. At first, osteoblasts and fibroblasts were cultured either upon sintered ceramic discs with polished or rough surfaces or in the presence of the corresponding alumina or zirconia powders at various concentrations. Thereafter, we chronically injected these powders in the knee articulation of rats. In vitro, the materials showed no deleterious effect on cell proliferation, extra-cellular matrix production (human type I collagen and fibronectin) or on cell morphology. In vivo, the histological examination showed only a very moderate and non-specific granulomatous response of the synovial membrane but no major inflammation as clinically described with metals or polyethylene wear debris. Besides its improved physical properties, this recently developed alumina–zirconia composite showed satisfactory biocompatibility." @default.
- W2048506709 created "2016-06-24" @default.
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- W2048506709 date "2010-03-01" @default.
- W2048506709 modified "2023-10-07" @default.
- W2048506709 title "In vitro and in vivo evaluation of an alumina–zirconia composite for arthroplasty applications" @default.
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- W2048506709 doi "https://doi.org/10.1016/j.biomaterials.2009.11.107" @default.
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