test 2 dental caries part 2 Flashcards
is dental caries and infectious, preventable disease?
no
are all carbohydrates equally cariogenic?
no, complex carbs like potatoes and starches are pretty harmless because they arnt completely digested in the mouth,
simple carbs like low molecular weight sugars are the bad ones and diffuse readily into plaque
Sucrose
makes extracellular polysacharides most rapid and is the most cariogenic
what does the sugar do to the pH?
causes a rapid drop which helps cause the demineralization
how long does it take for the plaque to return to normal?
30-60 min.
what did stephen discover in 1943?
once a hole forms, the plaque becomes more efficient at producing acid,
lower pH values are recorded within cavities with active lesions than inactive lesions
what 2 things are the best in defending demineralization?
saliva and fluoride
why is saliva a good defense?
washes the teeth, has Ca and P, pH buffer, has immunoglobins
whats xerostomia?
dry mouth, causes mucosal damage, dysgeusia- altered taste, dysomia- altered sense of smell, dysesthesia- burning or tingling sensation, dysphagia- difficulty swallowing and chewing……….etc
what does fluoride do?
reduces decay and decay of enamel by forming fluorapatite.
primary careis are…
lesions on unrestored surfaces
recurrent of secondary careis are…
lesions developing adjacent to fillings
residual caries are….
caries, left in place before a filling is placed ( indirect pulp cap)
active carious lesions are..
progressive lesions
arrested or inactive lesions are…
careis that have stopped progressing
Rampant caries are…
multiple active carious lesions within the same mouth. Involve surfaces that usually are caries free
early childhood caries
caries within pediatric patients
bottle caries or nursing caries are…
form of rampant caries in infants or young children. Usually caused by sweetened fluids like milk. usually affects maxillary anterior teeth
Radiation caries are….
caused by chemotherapy of the head and neck.
measuring caries activity
- prevelence: is the proportion of a population affected by a disease or condition at a particular time
- incidence: a measure of the rate at which a disease progresses
how are prevelence and incidence measured in populations?
DMF index
D- number of decayed teeth with untreated lesions
M- number of missing teeth which have been extracted
F- number of filled teeth
recording of epidemiological surveys include caries that have caried into the _____
careis caried into dentin, this under estimates carious activitiy because it exclude enamel caries
