FDI World Dental Federation notation

FDI World Dental Federation notation is a dental notation widely used by dentists internationally to associate information to a specific tooth.[1]

Developed by the FDI World Dental Federation, World Dental Federation notation is also known as ISO 3950[2] notation.

Orientation of the chart is traditionally "dentist's view", i.e. patient's right corresponds to notation chart left. The designations "left" and "right" on the chart below correspond to the patient's left and right.

Video of FDI Notation system


Table of codes

FDI two-digit notation
Permanent teeth
patient's upper rightpatient's upper left
patient's lower rightpatient's lower left
Deciduous teeth (baby teeth)
upper rightupper left
lower rightlower left

Codes, names, and usual number of roots: (see chart of teeth at Universal Numbering System)

How the codes are constructed

Syntax: <quadrant code><tooth code>

Sometimes a dot is inserted between quadrant code and tooth code in order to avoid ambiguity with other numbering systems.

Quadrant codes
1upper right permanent teeth
2upper left permanent teeth
3lower left permanent teeth
4lower right permanent teeth
5upper right deciduous teeth
6upper left deciduous teeth
7lower left deciduous teeth
8lower right deciduous teeth
Tooth codes
1central incisors
2lateral incisors
41st premolars (permanent teeth) / 1st molar (deciduous teeth)
52nd premolars (permanent teeth) / 2nd molar (deciduous teeth)
61st molars (permanent teeth)
72nd molars (permanent teeth)
83rd molars (permanent teeth)


  • "13" = permanent upper right canine
  • "32" = permanent lower left lateral incisor

See also


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