FDI World Dental Federation notation

"International notation" redirects here. For crystallographic notation system, see Hermann-Mauguin notation.

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

Developed by the FDI World Dental Federation, World Dental Federation notation is also known as ISO-3950 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, however, nonetheless correspond to the patient's left and right, respectively.

Table of codes

FDI Two-Digit Notation

Permanent Teeth
upper right								upper left
18	17	16	15	14	13	12	11	21	22	23	24	25	26	27	28
48	47	46	45	44	43	42	41	31	32	33	34	35	36	37	38
lower right								lower left
Deciduous teeth (baby teeth)
upper right								upper left
			55	54	53	52	51	61	62	63	64	65
			85	84	83	82	81	71	72	73	74	75
lower right								lower left

Codes, names, and usual number of roots:

• 11 21 maxillary central incisor 1
• 41 31 mandibular central incisor 1

• 12 22 maxillary lateral incisor 1
• 42 32 mandibular lateral incisor 1

• 13 23 maxillary canine 1
• 43 33 mandibular canine 1

• 14 24 maxillary first premolar 2
• 44 34 mandibular first premolar 1

• 15 25 maxillary second premolar 1
• 45 35 mandibular second premolar 1

• 16 26 maxillary first molar 3
• 46 36 mandibular first molar 2

• 17 27 maxillary second molar 3
• 47 37 mandibular second molar 2

• 18 28 maxillary third molar 3
• 48 38 mandibular third molar 2

How the codes are constructed

Syntax: <quadrant code><tooth code>

Quadrant codes 1 upper right 2 upper left 3 lower left 4 lower right

Tooth codes 1 central incisors 2 lateral incisors 3 canines 4 1st premolars 5 2nd premolars 6 1st molars 7 2nd molars 8 3rd molars

Examples:

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

See also

• Dental notation
• Universal numbering system
• Palmer Notation Method

External links

• Dr.Bunn page on dental notations.