Using the Universal System of tooth designation, what tooth is #12?

In the Universal System of tooth designation, tooth #12 corresponds to the maxillary left first premolar. This system assigns numbers to teeth starting from the upper right third molar numbered as #1, moving sequentially across the maxillary arch to the upper left third molar, which is #16. Following this pattern, tooth #12 falls in the upper left quadrant. The tooth designated as #12 is indeed the first premolar, positioned behind the canine, and is typically involved in the chewing process along with the other premolars.

This designation is important in dental anatomy and record-keeping, as it provides a standardized method for identifying teeth, facilitating communication among dental professionals regarding specific teeth.