Flashcards in Microbiology Deck (41):
what are the 4 different ecology of bacteria?
what do the following terms mean:
1- tiny bit here and there
2- present all the time
3-large no. appears in population
4. spreads over all places, 2 or more continents
name 4 gram +ve organisims within the mouth
what bacteria is the leading cause in tooth decay?
what is strepotooccus sanguinis often related to?
sometimes prophylaxis was given to heart pts before dental treatment to reduce the risk of infective endocartditis. Is prophylaxis still given to reduce the risk of enfective endocartitis?
No. It is no longer recommended by NICE guidelines
what is the 2nd most important group of bacteria involved in dental caries?
what is special about lactobacilli?
lactobacilli is aciduric and acidogenic
actinomyces is historically associated with what?
what diseases does actinomyces mediate?
abcesses and dentoalveolar infections
what gram +ve bacteria mediates caries and where?
eg. S. mutans=enamel caries
-actinomyces=root surface caries
what are the 4 main groups of gram -ve bacteria in the mouth?
where are gram -ve bacteria often found and why?
In the gingival crevice due to anaerobic conditions
what colour are prevotella and porphyromonas?
dark/purple pigmented bacteria?
what does BspA do in tanerella forsythia?
induces bone reabsorbing pro-inflammmatory cytokines
what bacteria are associated with localised aggressive periodontitis?
what are the principle bacteria involved with NUG?
what is in the acquired salivary pellicle?
mucins, salivary glycoproteins, minerals and immunoglobulins
what is the fimbriae (pili)?
hair like projections, allow for bacteria to adhere to enamel
what is subgingival plaque influenced by?
influenced by gingival fluid
how do viruses enter the host?
what is superficial candidosis?
denture wearing or prolonged drug therapy
what are antifungal drugs?
what is meant by beacteriostatic?
inhibit growth of bacteria
what is meant by bacteriocidal?
what does tetracycline inhibit?
where do antibiotics target?
-cell wall, ribosome, DNA replication, DNA gyrases, metabolic pathways, cell membrane function
does metronidazole have an effect when taken with alcohol?
what are the 4 types of vaccines?
what is meant by herd immunity?
the level of disease resistance of a community or population
what bacteria are associated with chronic periodontitis?
what bacteria are involved with rapidly progressive periodontitis?
what bacteria are in the red complex?
what bacteria are in the orange complex?
what are the two types of natural immunity?
give an example of natural active immunity
-natural recovery from infection
give an example of natural passive immunity
what are the two different types of artificial immunity?
give an example of artificial active immunity