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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.
What are infructescences, pseudofruits and parthenocarpic fruits? Infructescences are aggregated fruits created from inflorescences, aggregated flowers. Grape clusters are inst
Q. How can an organism that once underwent contact with an antigen be immunized against future infections by the same agent? This phenomenon is called as immune memory when an
(a) What do you understand by the term 'accommodation'? (b) What part does the lens play in this process? a) Accommodation is the way the eye can focus either
Downer cow syndrome This syndrome is a common sequel to milk fever. The term is commonly applied to those hypocalcaemic cows that remain recumbent for several hours before bein
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Define Requirements for underwater weighing method? • The equipment required to perform hydrostatic measurements is bulky and maintenance intense. • A large tank of water, usu
Use of trichomoniasis in pregnancy Trichomoniasis in pregnancy has been associated with adverse pregnancy outcomes (D Soper, Am J Obstet Gynecol 2004; 190:281). Metronidazole
Pleural Biopsy Pleural biopsy is one of the diagnostic procedure which may cause lot of anxiety in the patient. Procedure Pleural biopsies may be preformed surg
State the term - Infection Infection is the invasion of the body by disease-producing (pathogenic) microorganisms and the reaction of the tissues to their presence and to the
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