Flashcards in Bacterial Colonization of the Tooth Surface Deck (22):
does a mature biofilm consist of only one species of bacteria?
how does the biofilm develop?
bacterial species are stacked one on top of the other
______ is cell-to-cell adherence of one oral bacterium to another
is coaggregation random? if not, explain
no it is not random: each bacterial strain only has a limited set of bacteria to which they are able to adhere
the first bacteria to colonize to the tooth surface are ____
can other bacteria colonize to the tooth surface if the non-pathogenic bacteria are not present?
no, the early colonizers lay the foundation for the growth of the biofilm
until the early colonizers attach to the tooth what are the pathogens doing?
when can free floating bacteria join the biofilm?
when signals are sent from the early colonizers saying that conditions are favorable
early colonizers cannot attach to the pellicle, but have the ability to ____ with the streptococcal species
are most of the periodontal pathogens early, intermediate, or late colonizers?
can late colonies attach to the early colonizers?
no, the late colonizing bacteria can only attach to the intermediate bacteria
can free floating periodontal pathogens cause disease?
how can the biofilm be disrupted? and then what happens?
by brushing and flossing it can be disrupted but then the biofilm process starts all over again with the early colonizers
the organization of bacteria within a biofilm is ____
what color are early colonizers that are believed to be compatible with gingival health?
yellow and green complexes
what colors are thought to be major etiologic agents of perio disease
orange and red complexes
what part of the tooth do the early colonizers adhere to?
where does plaque biofilm development start and progress to?
starts supragingivally and progresses subgingivally
how long does it take supragingival biofilm to form if not disrupted?
how long does it take subgingival biofil to form if not disrupted?
3 to 12 weeks
what is the most dentrimental to the periodontal tissues