[searchingalways]

Hey look something I’m relevant too as a dentist.

Tooth decay requires several parameters 1- bacteria 2- bacteria food source 3- acidic environment 4- time

We all have the bacteria but the other ones are somewhat controllable. What many people don’t account for is the 4th parameter of contact time. It would be better (for your teeth, not overall health) to rapidly drink several sodas than periodically sip one for several hours.

Decay typically only occurs in a pH environment of 5.5 or lower, otherwise the enamel is resistant to the acid. So the longer the pH is lower the more likely you will develop a cavity.

[boppo1]

So... how bad is a black coffee I sip on for 30 min? Google says the PH is about 5. No

Also: it has definitely stained my teeth. Is there a way to remove the stains that doesn't weaken the enamel?

[_yb2s]

Adding milk to coffee will raise the pH to above 6.

[oilchange]

You can try drinking coffee through a straw.

[moffkalast]

So the trick is to have basic teeth.

[lsaferite]

This comment made me chuckle. Thanks!