Dental caries II Flashcards
what teeth , according to position , are most susceptible to caries?
-misaligned, crowded , and posterior teeth
how do conditions such as enamel hypoplasia and enamel hypocalcification affect caries?
they may affect the rate of progression but not the initiation of caries
food rich is starch is more cariogenic than food rich in fat or cellulose
buffering capacity of saliva depends on:
bicarbonate content
increase in viscosity of saliva affects caries pervelance in what way ?
increases prevalence
newly erupted teeth are more susceptible to caries than adult teeth
ions that are essential for remineralization :
-calcium
-phosphate
-fluoride (water , tea , sea food , topical application of fluoride)
how does fluoride help prevent caries ?
forms fluorapatite crystals which are less soluble and more stable than hydroxyapatite crystals in acid .
fluoride also readily enters bacterial cells and can inhibit enzymes involved in sugar metabolism
young girls have a slightly higher prevalence of caries than boys due to:
earlier eruption and longer exposure to the cariogenic oral environment .
most affected tooth:
mandibular first molar
which tooth is the most resistant to caries
?
mandibular incisors due to protection of tongue
earliest clinical evidence of caries?
chalky white etch on the translucent enamel which becomes softer than sound enamel
