FDI World Dental Federation notation (also "FDI notation" or "ISO 3950 notation") is the world's most commonly used

dental notation Dental professionals, in writing or speech, use several different dental notation systems for associating information with a specific tooth. The three most common systems are the FDI World Dental Federation notation (ISO 3950), the Universal Nu ...

(tooth numbering system). It is designated by the

International Organization for Standardization The International Organization for Standardization (ISO ) is an international standard development organization composed of representatives from the national standards organizations of member countries. Membership requirements are given in Art ...

as standard ISO 3950 "Dentistry — Designation system for teeth and areas of the oral cavity".ISO 3950:2016 ''Dentistry — Designation system for teeth and areas of the oral cavity''
/ref> The system is developed by the

FDI World Dental Federation FDI World Dental Federation, often shortened to FDI (french: Fédération Dentaire Internationale), is the world's leading organization representing the dental profession. It serves as the principal representative body for over one million dent ...

. It is also used by the

World Health Organization The World Health Organization (WHO) is a specialized agency of the United Nations responsible for international public health. The WHO Constitution states its main objective as "the attainment by all peoples of the highest possible level of ...

, and is used in most countries of the world except the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

(which uses the UNS). 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.

Table of codes

Codes, names, and usual number of roots: (see chart of teeth at

Universal Numbering System The Universal Numbering System, sometimes called the "American System", is a dental notation system commonly used in the United States. Most of the rest of the world uses the FDI World Dental Federation notation, accepted as an international sta ...

) *11 21 51 61

maxillary central incisor The maxillary central incisor is a human tooth in the front upper jaw, or maxilla, and is usually the most visible of all teeth in the mouth. It is located mesial (closer to the midline of the face) to the maxillary lateral incisor. As with all i ...

1 *41 31 81 71

mandibular central incisor The mandibular central incisor is the tooth located on the jaw, adjacent to the midline of the face. It is mesial (toward the midline of the face) from both mandibular lateral incisors. As with all incisors, its function includes shearing or cut ...

1 *12 22 52 62

maxillary lateral incisor The maxillary lateral incisors are a pair of upper (maxillary) teeth that are located laterally (away from the midline of the face) from both maxillary central incisors of the mouth and medially (toward the midline of the face) from both maxillary ...

1 *42 32 82 72

mandibular lateral incisor The mandibular lateral incisor is the tooth located distally (away from the midline of the face) from both mandibular central incisors of the mouth and mesially (toward the midline of the face) from both mandibular canines. As with all incisors, ...

1 *13 23 53 63

maxillary canine In human dentistry, the maxillary canine is the tooth located laterally (away from the midline of the face) from both maxillary lateral incisors of the mouth but mesial (toward the midline of the face) from both maxillary first premolars. Both t ...

1 *43 33 83 73

mandibular canine The mandibular canine is the tooth located distally (away from the midline of the face) from both mandibular lateral incisors of the mouth but mesially (toward the midline of the face) from both mandibular first premolars. Both the maxillary and ...

1 *14 24

maxillary first premolar The maxillary first premolar is one of two teeth located in the upper jaw, laterally (away from the midline of the face) from both the maxillary canines of the mouth but mesial (toward the midline of the face) from both maxillary second premolars ...

2 *44 34

mandibular first premolar The mandibular first premolar is the tooth located laterally (away from the midline of the face) from both the mandibular canines of the mouth but mesial (toward the midline of the face) from both mandibular second premolars. The function of this ...

1 *15 25

maxillary second premolar The maxillary second premolar is one of two teeth located in the upper maxilar, laterally (away from the midline of the face) from both the maxillary first premolars of the mouth but mesial (toward the midline of the face) from both maxillary firs ...

1 *45 35

mandibular second premolar The mandibular second premolar is the tooth located distally (away from the midline of the face) from both the mandibular first premolars of the mouth but mesial (toward the midline of the face) from both mandibular first molars. The function of ...

1 *16 26 54 64

maxillary first molar The maxillary first molar is the human tooth located laterally (away from the midline of the face) from both the maxillary second premolars of the mouth but mesial (toward the midline of the face) from both maxillary second molars. The function ...

3 *46 36 84 74

mandibular first molar The mandibular first molar or six-year molar is the tooth located distally (away from the midline of the face) from both the mandibular second premolars of the mouth but mesial (toward the midline of the face) from both mandibular second molars. It ...

2 *17 27 55 65

maxillary second molar The maxillary second molar is the tooth located distally (away from the midline of the face) from both the maxillary first molars of the mouth but mesial (toward the midline of the face) from both maxillary third molars. This is true only in pe ...

3 *47 37 85 75

mandibular second molar The mandibular second molar is the tooth located distally (away from the midline of the face) from both the mandibular first molars of the mouth but mesial (toward the midline of the face) from both mandibular third molars. This is true only in ...

2 *18 28

maxillary third molar A third molar, commonly called wisdom tooth, is one of the three molars per quadrant of the human dentition. It is the most posterior of the three. The age at which wisdom teeth come through ( erupt) is variable, but this generally occurs betwe ...

3 *48 38

mandibular third molar A third molar, commonly called wisdom tooth, is one of the three molars per quadrant of the human dentition. It is the most posterior of the three. The age at which wisdom teeth come through ( erupt) is variable, but this generally occurs betw ...

2 File:Zahnschema OK 1.jpg, ISO notation upper jaw File:Zahneschema UK 1.jpg, ISO notation lower jaw File:Primary dentition.jpg, ISO notation primary teeth

How the codes are constructed

Syntax: ''Sometimes a dot is inserted between quadrant code and tooth code in order to avoid ambiguity with other numbering systems, especially the UNS.'' Examples: *"13" = permanent upper right, 3rd tooth (canine) *"32" = permanent lower left, 2nd tooth (lateral incisor)

References

External links

Dr.Bunn page on dental notations
* https://www.youtube.com/watch?v=ea7lC42BVA8 {{ISO standards . * ISO standards

Table of codes

How the codes are constructed

See also

References

External links