The primary teeth are classified in the Universal/National Teeth-Numbering System using:

Question

Quizplus · Accepted Answer

The Universal/National System uses the capital letters A through T for the primary dentition.
Numbers are used for the permanent teeth in the Universal/National System.
A number for each quadrant and a number for each tooth are used for the ISO/FDI System.
Numbers inside a bracket represent the labeling for the Palmer Notation System.

The Primary Teeth Are Classified in the Universal/National Teeth-Numbering System