/sci/ - Science & Math

Your teeth are made of more than one element.

>>3078470
so are yours, retard.

>>3078479
hurrrrrrrrr

>yfw fluoride disrupts the biorhythm by binding to idodine receptors in the thyroid

Who... Who the hell said it was made out of fluoride?

>>3078486
the people who made flouride toothpaste?

>>3078485
>biorhythm

Bad for black people, great for white people. White people don't have biorhythm.

>>3078492
THAT STILL DOESN'T EVEN MAKE SENSE!!!

>yfw medicinal consent

>>3078502

>>3078504
>>3078502
http://en.wikipedia.org/wiki/Medical_ethics#Truth-telling
>American culture rarely used truth-telling especially in medical cases, up until the 1970s.

>2011
>our most advanced dentistry is still just digging holes in teeth and filling them with fillers that don't even bond properly

>>3078527
>fillers that don't even bond properly
Isn't that the some of the point?

>>3078543
The fillers are to replace damaged portions of teeth and prevent access by bacteria to the inner portion of the teeth.

IF they don't bond properly they'll likely come loose eventually or even develop a gap between the filler and the tooth surface which bacteria can then move into.

So in short no.

>>3078527
What are you, afraid of the dentist? You've never heard of sealants?

>>3078601
>What are you, afraid of the dentist?
I'm a man, of course I am.

teeth and bones are primarily made up of apatite, which is calcium phosphate. it is part of the hexagonal crystal system, and is the diagnostic mineral for hardness 5 on the mohs scale.

>>3078602
LOL!
OK, I was being dense.

>>3078623
did more research, tooth enamel contains fluoroapatite, hence the fluoride in toothpaste. this also made me remember that thanks to above ground nuclear testing, carbon 14 radiometric dating can be used on your teeth to determine your age, and can apparently also be used on the lens of your eye.

Dentistfag here. Fluoride is good your teeth. It converts hydroxyapatite in your enamel (breaking down at pH 5,5) to more resistant fluoroapatite (breaking down at pH 5,2). Regular fluoridation has been shown to decrease caries incidence by 40%.

And composites or glass ionomer cements bond to the teeth. Amalgams dont, but they have other properties that make up for it (durability, auto-sealant effect, antibacterial, cheap) so they certainly have their place even in modern dentistry. Modern non-gamma-2 amalgams just cannot be compared to old ones your mommy has, in all aspects.

>>3078981
Regrowing teeth when.

>>3078981
>fluoride is good your teeth

Actually it wears down the enamel overtime. Enamel that isn't replaceable.

>>3079563
does does soda, foods with citric acid, ketchup, brushing your teeth too vigorously, not brushing your teeth, and getting your teeth polished at the dentist.

>>3079563

we aren't immortal. it only has to last 120 years at an absolute maximum. if biological immortality becomes a reality then we will have to consider things like this more carefully, but as it is, your enamel wearing out just isn't that huge a concern.