Roots, in general, are quite a few shades darker than the enamel. The coloration can vary greatly between patient to patient but this all depends on the natural color of your dentin
. However, a few other artifacts/situations can make the roots appear even darker.
Do you know if they were ever root-canal-treated?
- Root-canal-treated teeth often stain and discolor internally. The crowns
become dark and the roots even darker. Though they never turn pitch-black, they can turn various shades of dark grey to brown.
Did you see the teeth/roots immediately after the extraction on the tray or were they cleaned off with peroxide/bleach first and you saw them after all blood and tissue were debrided off and the roots were still dark/black?
- If you saw the teeth immediately after they were extract, it is likely the dark blood clots that has started to form around the roots. Oftentimes, there is a fair amount of bleeding that occurs during an extraction (this is normal and actually good). And as we take out the teeth + roots, the blood and blood clot often make the roots appear very dark.
I hope I was able to provide an answer to your question.