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The potential of ceramic materials for their use as biomaterial

from Nanowerk News

Hydroxyapatite is one of the ceramic materials most commonly used to substitute bone tissue in orthopedic and dental implants. Its chemical composition is similar to the inorganic constituent of bone tissue and it possesses mechanical properties similar to those of mineral bone as well. Nevertheless, a prosthesis made of pure hydroxyapatite is limited to supporting light loads due to its inherent fragility, so its mechanical properties must be modified if we wish the implant to be able to handle heavier weights. A method that is frequently used to achieve this consists in obtaining a composite of hydroxyapatite and biocompatible oxides (for example, TiO2, Al2O3, ZrO2 or Y2O3), which allows us to obtain a harder composite with greater strength under compression and resistance to breakage than pure hydroxyapatite. more


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