Which quadrant does the number '1' represent in the Palmer Notation System?

In the Palmer Notation System, the number '1' represents the upper right quadrant of the mouth. This dental notation system divides the mouth into four quadrants, with each quadrant corresponding to a specific number. The upper right quadrant is assigned the number '1', while the lower right quadrant is '2', the upper left quadrant is '3', and the lower left quadrant is '4'. This organization allows dental professionals to easily identify and communicate about specific areas of the mouth. Knowing this notation is vital for accurate documentation and treatment planning in dental practice.