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- W3147348088 abstract "Porous biomaterials promote osseointegration. We have prepared porous titanium cylinders by additive manufacturing from titanium beads. Two types of morphology were tested: cylinders with geometric pores or mimicking trabecular microarchitecture. Cylinders were decontaminated and cleaned by HF/HNO3 to remove unmelted balls. Surgical implantation in ewes was performed under general anesthesia and the animals were housed for 90 and 270days. The femoral condyles were collected and analyzed by nanoCT, embedded in pMMA and analyzed by histomorphometry. No significant difference was found in terms of bone volume or bone/titanium interface between the two types of cylinders. There was no evolution over time except for the mineralization rates which decreased, reflecting the effect of the aging of the animals. The influence of the pores (geometrical or natural) did not influence osseointegration. HF/HNO3 etching treatments are effective on the outermost surfaces but do not seem to reach the central cavities of the samples. Finally, osseointegration seems to occur only in the few millimeters around the periphery of the implants and does not extend in the center. This is explained by the absence of stress transmission within the very rigid metal cylinders, preventing bone modeling and remodeling." @default.
- W3147348088 created "2021-04-13" @default.
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- W3147348088 date "2022-06-01" @default.
- W3147348088 modified "2023-10-06" @default.
- W3147348088 title "Osseointegration of two types of titanium cylinders with geometric or trabecular microarchitecture: A nanotomographic and histomorphometric study" @default.
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- W3147348088 doi "https://doi.org/10.1016/j.morpho.2021.03.001" @default.
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