What is the correct Palmer charting notation for the tooth designated as 43 in the FDI system?

In the FDI system, teeth are designated using a two-digit notation where the first digit indicates the quadrant and the second digit identifies the specific tooth within that quadrant. The first digit for tooth number 43 indicates that it is in the lower right quadrant, while the second digit specifically points to the permanent canine in that position.

In this system, the quadrants are numbered as follows: 1 for upper right, 2 for upper left, 3 for lower left, and 4 for lower right. Therefore, tooth 43 refers specifically to the lower right quadrant and the third tooth in that quadrant, which is indeed the permanent canine. This allows dental professionals to identify teeth accurately and communicate effectively about dental care and treatment.

The other choices refer to different teeth and quadrants, which do not correspond with tooth 43 in the FDI numbering system. Therefore, the correct interpretation of tooth 43 confirms that it is indeed the lower right permanent canine.