Dental Caries Flashcards
how many species of bacteria have been identified in the oral biofilm
700
what are the regions of biofilm that are not neutralized by saliva buffers
exopolysaccharide rich matrix (EPS)
what are the bacterial types that dominate plaque
filamentous and spiral
how long after a cleaning can biofilm reaccumulate
2 hours
if left undisturbed, biofilm creates what type of environment
anaerobic - for the attachment of streptococci
how much saliva does an adult produce in one day
1-1.5L
signs of hyposalivation
lack of pooling on the floor of the mouth
gingivitis
mucositis
what is an important composition of saliva that that stabilizes calcium and phosphate
statherin
high-frequency exposure to fermentable carbohydrates such as ______ may be the most important factor in producing cariogenic biofilm and, ultimately, caries lesions
sucrose
dietary intake for caries should focus on
acidity and sucrose
what is the most susceptible site for caries
- pit a fissure
- smooth enamel
- root surfaces
what is the first clinical evidence of of dimeneralization
white spots - non cavitated lesions that appear chalky white
(caused by poor oral hygiene, frequent exposure to sucrose or acid)
describe sclerotic dentin
shiny, darker in color, feels hard to the explorer’s tip
what is the most superficial zone of the carious dent
necrotic zone
unattached dentin in the pulp chamber is called
pulp stones
