FDI World Dental Federation notation
FDI World Dental Federation notation (also called FDI notation or ISO3950 notation) is the world's most commonly used dental notation (tooth numbering system).[1] [2] It is designated by the International Organization for Standardization as standard ISO3950 "Dentistry — Designation system for teeth and areas of the oral cavity".[3]
The system is developed by the FDI World Dental Federation. It is also used by the World Health Organization, and is used in most countries of the world except the United States (which uses the UNS).
The system uses two numbers to define each tooth. One to specify the quadrant, and one to specify the tooth within that quadrant.
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
[edit ]
| Permanent teeth | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| patient's upper right | patient's upper left | ||||||||||||||
| 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| patient's lower right | patient's lower left | ||||||||||||||
| 48 | 47 | 46 | 45 | 44 | 43 | 42 | 41 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 |
| Deciduous teeth (baby teeth) | |||||||||||||||
| upper right | upper left | ||||||||||||||
| 55 | 54 | 53 | 52 | 51 | 61 | 62 | 63 | 64 | 65 | ||||||
| lower right | lower left | ||||||||||||||
| 85 | 84 | 83 | 82 | 81 | 71 | 72 | 73 | 74 | 75 | ||||||
Codes, names, and usual number of roots: (see chart of teeth at Universal Numbering System)
- 11 21 51 61 maxillary central incisor 1
- 41 31 81 71 mandibular central incisor 1
- 12 22 52 62 maxillary lateral incisor 1
- 42 32 82 72 mandibular lateral incisor 1
- 13 23 53 63 maxillary canine 1
- 43 33 83 73 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 54 64 maxillary first molar 3
- 46 36 84 74 mandibular first molar 2
- 17 27 55 65 maxillary second molar 3
- 47 37 85 75 mandibular second molar 2
- 18 28 maxillary third molar 3
- 48 38 mandibular third molar 2
- ISO notation upper jaw (wisdom teeth removed)
- ISO notation lower jaw (wisdom teeth removed)
- ISO notation primary teeth
How the codes are constructed
[edit ]The syntax is the quadrant code followed by the tooth code. Sometimes a dot is inserted between the 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 / cuspid)
- "32" = permanent lower left, 2nd tooth (lateral incisor)
See also
[edit ]References
[edit ]- ↑ FDI Two-Digit Notation Archived 2007年04月01日 at the Wayback Machine , hosted on the FDI World dental Federation Archived 2007年07月18日 at the Wayback Machine website. Page accessed April 1, 2007.
- ↑ ISO (International Organization for Standardization). "ISO 3950:2016". ISO 3950:2016 Dentistry — Designation system for teeth and areas of the oral cavity. Retrieved 2023年03月10日.
- ↑ ISO 3950:2016 Dentistry — Designation system for teeth and areas of the oral cavity