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Explain about Bioactive materials
Bioactive materials: Certain glasses, ceramics, and glass-ceramics that contain oxides of silicon, sodium, calcium and phosphorus (SiO2 , Na2O, CaO, and P2O5 ) form a chemical bond with bone, resulting in a strong mechanical implant bone bond. These materials do bond to bone through a time-dependent, kinetic modification of the surface triggered by their implantation within living bone. An ion-exchange reaction between the bioactive implant and surrounding body fluids results in the formation of a biologically active calcium phosphate layer on the implant. This layer is chemically and crystallographically equivalent to the mineral phase in bone which is responsible for the strong interfacial bonding.
Ammonia Assimilation - Inorganic Nitrogen and Sulphur Metabolism Nitrogen (N 2 ) gas and NO 3 are the most common available forms of inorganic nitrogen. Both are enzymaticall
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What are the indications of implant removal? Failed implants need to be removed and the specific indications include: - Severe Perimplant bone loss (> 50 per cent implant le
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short essay
In which of the following functional groups ionization is stabilized by resonance? Select one: a. Carboxyl b. Hydroxyl c. Amine d. Aldehyde e. All of the above
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