Oldest tooth filling was made by an Ice Age dentist in Italy

[luvMIdog]

4. guess I'm the slow kid in this glass I have a question

I googled bitumen and it said this:

{DEFINITION of 'Bitumen'
A substance produced through the distillation of crude oil and known for its waterproofing and adhesive properties. Bitumen production through distillation removes lighter crude oil components, such as gasoline and diesel, leaving the “heavier” bitumen behind. It is often refined several times in order to improve its grade.

BREAKING DOWN 'Bitumen'
In modern times bitumen is most likely to be manufactured from crude oil, but bitumen can be found in nature. Deposits of naturally occurring bitumen can be found at the bottom of ancient lakes, where prehistoric organisms have since decayed and have been subjected to heat and pressure.

Bitumen is generally for industry use. Early uses of bitumen involved its natural adhesive and waterproofing characteristics, but it was also used as a medicine. It was used to bind building materials together, as well as to line the bottoms of ships. Herodotus, a fifth century BC Greek historian, claimed that the walls of ancient Babylon were strengthened through the use of bitumen. The material was traded between ancient civilizations.}

My question is this- Where do you think they found the stuff & how would they get it not to dissolve in the tooth?