wearing away of the enamel caused because of tooth-to-tooth contact. Can be caused by normal occlusion or grinding
Does more attrition occur with regular enamel or porcelain crowns, why?
porcelain crowns, because it is harder than enamel
wearing away of the enamel caused by non-tooth contact. usually caused by hard tooth brushing and abrasive tooth pastes, or even bobby pins. be careful with the polishing pastes you choose
What is the most probable cause for tooth abrasion?
tooth brushing and abrasive pastes
is abrasion or abfraction more smooth?
wearing away of the enamel caused by chemical means. Usually caused by stomach acid (seen in bulimics and people with sever acid reflux) or beverages with high acidity (carbonated soft drinks or sports drinks)
this type of wearing away of enamel may even occur if you suck on lemons a lot
true or false. Right fter you throw up, it is better to rinse with water than to brush your teeth because you are rubbing the stomach acid all over your teeth if you brush right after
demineralization of the enamel from the acidic byproducts of cariogenic bacteria (plaque poop)
Caries occur when the pH is at what level?
less than 5.5
enamel just breaks away at the cervical margin of the tooth and no one really knows why. it may be caused by tensile and compressive forces during tooth flexure
this condition usually occurs in one place/tooth, and the edges are very very distinct
While laying down the matrix the ameloblasts backed into each other and it cut off their________________. This created____________and/or_____________.
deep pits and grooves
This incomplete enamel is a pit or groove in the toothe that is_____________for your tooth brush bristles, but___________________for bacteria
What sticks to the instrument when you are exploring the pits, gaps, and grooves of the tooth when you explore it?
bacteria that passes through the gaps in the enamel and start demineralizing the less calcified dentin and pulp beneath it
when bacteria passes through the gaps, pits, and grooves in the enamel, what does it start doing?
demineralizing the less calcified dentin and pulp beneath it.
true or false. Decay moves FAST when it gets to the dentin
___________create a barrier so that bacteria cannot penetrate a pit or groove
this helps to form stronger crystalline structures while teeth are developing
this helps to remineralize enamel after bacterial demineralization
removes some of the organic portions of enamel to open gaps in the enamel so that the sealant material can flow in and increase surface attachment
etch material, or etching
true or false. Etching is a mechanical material
stains from dark foods, drinks, and tobacco collect in the_____________
What are 2 things that can stain your teeth that usually are the cause for stains on 'Mormon' teeth?
What is the chemical contained in tooth whitening products that will bleach out stain?
When we use bleach, where is it bleaching out the stain? why do we want the bleach to reach here?
from the interprismatic regions and it reaches all the way to bleach the dentin
because the dentin is yellow, not the enamel
When our teeth are sensative after bleaching them, is it the enamel or the dentin? Why?
because the bleach can reach all the way down to the dentin
Why does it cause sensativity when dentin is bleached?
because the dentinal tubules communicate directly with the pulp (nerve supply) of the tooth