We just learned about Dental Notation - Universal Numbering.
Another way of numbering teeth is the ISO System or the International Standards Organization System, also called the FDI system.
This way of numbering teeth puts teeth in four different sections by number:
1 - top right
2 - top left
3 - bottom left
4 - bottom right
The teeth in those areas are numbered starting from the front with 1, and the numbers go up as you get toward the back.
So the top right front tooth is 1-1, and the top left front tooth is 2-1.
The top right back tooth is 1-7, and the top left back tooth is 2-7.
The bottom teeth go from 3-1 to 3-7, and 4-1 to 4-7.
Some dentists like this way of numbering tooth because they can easily split the mouth up into 4 parts.
(from: wikipedia - dental notation)
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