microbiology Flashcards
(45 cards)
pellicle
protect enamel from acidic activity
14-21 days of bacteria
gingivitis is visible
innocuois
bacteria that is not harmful
gram negative, motile and anaerobic
bad
gram positive
purple
single cell wall
release exotoxin
gram negative
red
double cell
release endotoxin and exotoxin
aerobic
requires oxygen
anaerobic
cannot survive in the presence of oxygen
facultative anaerobi
can survive with or without oxygen
3 components are needed for the formation of caries
bacterial
tooth structure
fermentable cabohydrate
the most cariogenic
monosaccharides
disaccharides
responsible for caries formation
strep mutans
lactobacillus
found in deep caries lesion
gram positive rods
streptococcus and lactobacillus
produce acid
survive in low pH environment
the pH in oral DROPS after eating cariogenic food
toothpaste pH
9
enamel pH demineralization
5.5
root pH deinralization
6.2-6.7
normal pH of mouth
6.7-7
cheese
after acidic food helps raise pH
supra biofilm
streptococci
actinomyces
lactoballicus
yeast
filamentous bacteria
sub biofilm
actinomyces
T.forsythia
F.nucleatum
P.gingivalis
P.intermedia
P.endodontalis
P.negrescent
HPV : thru sexual contact
cause oropharyngeal cancer
VZV
chickenpox (varicella)
shingles (zoster)