Earliest tooth-fillings discovered in 13,000-year-old skeleton – Scientists have discovered 13,000- year-old teeth with traces of a tar-like substance at an ice age site in Italy, which is the oldest known example of tooth-filling.

from http://kianorshahmohammadi.com/post/159761150165

From https://dentaleconomicsus.tumblr.com/post/159764211298