The International Tooth Numbering System

  • The first number identifies the quadrant
  • The upper right is Quadrant #1
  • The upper left is Quadrant #2
  • The lower left is Quadrant #3
  • The lower right is Quadrant #4
  • Deciduous teeth follow the same system (Quadrants # 5, 6, 7, 8)
  • The second number identifies the tooth

 

(Figure 1)
(Figure 2)

Share This Book