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Microbial films have been known to form on inert biomaterial surfaces in an aqueous environment. Implants placed in the oral cavity are no exception and represent artificial surfaces colonized by bacteria from the saliva and ecologic niches such as periodontal pockets, tonsils and crypts of the tongue. The fact that the development of this film is a causative factor for periimplant disease has been proved by many studies. Furthermore, periodontal pathogens from the residual pockets of the remaining teeth in patients treated for periodontal disease have been known to colonize oral implants.
Biofilm formation around implants can be assessed by the presence of disclosable plaque or accumulation of material alba. Indices modified from the Plaque Index have been introduced in literature to measure and objectively record the status.
Q. Define Bioactive materials? Bioactive materials: Certain glasses, ceramics, and glass-ceramics that contain oxides of silicon, sodium, calcium and phosphorus (SiO 2 , Na 2
Initiation of Aseptic Cultures The nutrient medium (basal medium) used for plant tissue culture would promote luxuriant growth of micro-organisms such as bacteria and fungi. W
Q. Concerning extracellular digestion what is meant by chemical digestion? Chemical digestion is the series of enzymatic reactions to break macromolecules into smaller ones.
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Q. What is the life cycle type of bryophytes? As in all plants the life cycle of bryophytes is diplobiontic (alternation of generations) and in bryophytes the lasting form is t
Explain mixture in basic chemistry? Mixtures : Mixtures are produced by combining two or more substances. In contrast to the substances in compounds, the substances that com
Q. What are flight adaptations present by birds? Wings associated to a well-developed pectoral musculature, less accumulation, pneumatic bones of feces in the bowels due to the
Explain The physical work capacity tests? The physical work capacity tests include common tests like running staircases (Step test) or using a bicycle ergo meter or treadmill.
Results of CABG: In most centres where this operation is routinely conducted the mortality is 1-2 per cent. In high-risk group of patients this may go up to 5 to 10 per cent.
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