Question

"a physical anthropologist compares the teeth of a skeleton to police dental records to identify the remains of the deceased."

Answer 1

One of the techniques of a physical anthropologist is to compare the teeth of human skeletal remains to law enforcement dental record databases, in order to assist in identifying the deceased.

Answer 2

I believe that would be included in Biological science.
Anthropologists use both social and biological science in studying various aspects of humans in the past.
The biological science is used when analyzing everything related to Human Anatomy/Biology. (such as skeletal structure, arm length, residual wound, etc)