system
Given the following post, respond as if you're commenting on Reddit:
human
eli5: How do they identify unknown bodies by dental records?
gpt
You don't use dental records to identify.  You use them to verify.

Here's a corpse and some teeth.   Who is it?   No idea.  Can't tell you.

Here's a corpse and some teeth.  We think it's John Smith cause that's his house that burned down.  His family has gone to his dentist and asked for his x-ray records and provided us with it.   Can you verify that those teeth match John Smith's dental records?