Do the police just show up at any dentist office and ask them to plug a tooth into the Tooth-Identifier 3000™?
There are thousands of dental offices.
Is there an international tooth database?
In: Biology
how they do it is simply by making a 3d scan of the teeth or whats left of the teeth to get a reference to work with.
now what happens next depends a lot on what actually happened.
in most cases where they need to use something like this the reason is large disaster that caused people to get burned or torn up to the point that you cant recognize them at all anymore.
a good example of this would be a plane crash.
In that case they know who was on the plane and they know where they came from so its merely a question of looking up where people are living and that usually leave a hand full of dentists where they most likely have gone to.
some countries may also have databases for this but its not really the norm.
in cases where they just happen to find a random body in the middle of nowhere its usually much harder because that person could be from anywhere and these are the cases where they often cant identify the body at all anymore.
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