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)

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Oral & Maxillofacial Surgery - An Introduction for Registered Nurses by Kathryn Truant is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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