In the FDI charting system, what tooth is indicated by the Palmer charting notation 42?

In the FDI charting system, which is a two-digit system used for identifying teeth, the first digit represents the quadrant and the second digit represents the tooth within that quadrant. The quadrants are numbered as follows:

1 for the upper right,

2 for the upper left,

3 for the lower left,

and 4 for the lower right.

In this context, the notation "42" indicates that it pertains to the lower right quadrant (4) and the second tooth in that quadrant (2). The second tooth in the lower right quadrant is the permanent lateral incisor. Therefore, this notation accurately corresponds to a lower right permanent lateral incisor.

Understanding this notation is crucial for dental professionals when charting and communicating about a patient's dentition, especially in a clinical setting.