Embryology

what is enamel developed from?

enamel is developed from ______

enamel is the _______ calcified tissue in the human body

is enamel radiolucent or radiopaque

why is enamel so radiopaque

enamel has no ______ or ______ _______

what is the chemical equation for calcium hydroxyapatite

enamel is _____-_____ but looks ______ because of underlying dentin

what is the secretory surface of the ameloblast?

what dictates the shape of each pillar aka _____ ____ of enamel?

what is the shape of the enamel rods?

the matrix is first formed at the ______ and laid in waves until it gets to the ______

what pumps hydroxyapatite into the matrix?

where does the ameloblast pump hydroxyapapatite from?

similar to ______ mineralization starts at the _____ and moves to the _____

after the tooth erupts what mineralizes the tooth?

why don't the ameloblasts mineralized the tooth after eruption?

what is the crystalline structural unit of enamel?

rodes extend _______ to the DEJ

the space between each enamel rod?

where does the stain collect?

what used to be the basement membrane that formed the battle lines for dentin and enamel?

what are the four types of incremental lines?

what is the incremental line that shows that enamel is secreted cyclically

what are the lines of retzius

what type of lines are the raised scale like pattern of enamel?

what are the grooves between each imbrication line?

what is an accentuated incremental line because of the trauma at birth?

what is the darkest line when looking at the tooth microscopically?

what are odontoblasts that crossed the basement membrane and get stuck in the forming enamel?

t/f enamel spindles are asymptomatic.
True False

what are small dark brushes with their bases near the DEJ

t/f enamel tufts don't crystallize correctly and are asymptomatic
True False

what are partially calcified enamel sheets that extend from the DEJ to the occlusal surface

t/f enamel lamellae are narrower and longer than enamel tufts and are asympotmatic
True False

what is the wearing away of enamel caused by tooth to tooth contact and can be caused by normal occlusion or grinding

what is the wearing away of enamel caused by non tooth contact. usually caused by hard toothbrushing and abrasive toothpastes

what is the wearing away of enamel caused by chemical means usually stomach acid or beverages.

what is the deminearlization of enamel from the acidic byproducts of cariogenic bacteria and occures when pH is less than 5.5

at what pH do you get caries?

what is it called when enamel just breaks away at the cervical margin of the tooth and may be caused by tensile or compressive forces during tooth flexure

why do we do sealants?

how are deep pits or grooves formed?

t/f both ameloblasts die off when a deep pit or groove is formed?
True False

this incomplete _____ is a ____ or _____ in the tooth and is too ______ for your toothbrush bristles but _____ enough for bacteria

a pit or groove is large enough for_____

what does the bacteria do when it passes through the gaps in enamel?

what does systemic fluoride help with?

what does topical fluoride help with?

what kind of fluoride helps to remineralize enamel after bacterial demineralization?

what kind of fluoride helps to form stronger crystalline structures while teeth develop?

what is the importance of etching?

sealants are a ______ attachment

what kind of product bleaches out stain?

where does the bleach out stain?

t/f bleach can reach all the way to the dentin?
True False

why do the teeth become sensitive if the bleach reaches to the dentin?

what is something that can be used to close the pores from bleaching to limit sensitivity?

why doesn't enamel have nerves or blood vessels?

enamel ____ and _____ as it forms and this forms _____ like tree rings

______ are smooth breaks vs ______ are sharp breaks

_____ is gneralized vs _______ is localized