Primary teeth are labeled on a human teeth diagram with capital letters A through T. There are a total of 20 primary teeth. The first tooth, tooth A, is the patient’s upper right molar, farthest to the back.
Tooth charts. Within each quadrant, the teeth are numbered from 1 to 8 going from the front tooth to the wisdom tooth: For example, UR1 is the upper right central incisor, and LL8 is the lower left wisdom tooth.
The labeling then resumes with tooth K, the bottom left molar, farthest in the back, continuing around the front of the mouth to the right side again, where it ends with tooth T. The adult permanent human teeth diagram looks different than the primary one because adults have 32 teeth, which means the teeth numbers for adults are 1 through 32.