Universal Numbering System
The Universal Numbering System is a dental notation system for associating information to a specific tooth,[1] and is commonly used in the United States.
The designations "left" and "right" on the chart correspond to the patient's left and right, respectively.
Universal numbering system
Although it is named the "universal numbering system", it is also called the "American system" as it is commonly used in the United States.[2] The uppercase letters A through T are used for primary teeth and the numbers 1 - 32 are used for permanent teeth. The tooth designated "1" is the maxillary right third molar ("wisdom tooth") and the count continues along the upper teeth to the left side. Then the count begins at the mandibular left third molar, designated number 17, and continues along the bottom teeth to the right side. Each tooth has a unique number or letter, allowing for easier use on keyboards.
| Permanent Dentition | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| upper right | upper left | ||||||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 32 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 |
| lower right | lower left | ||||||||||||||
| Primary Dentition | |||||||||||||||
| upper right | upper left | ||||||||||||||
| A | B | C | D | E | F | G | H | I | J | ||||||
| T | S | R | Q | P | O | N | M | L | K | ||||||
| lower right | lower left | ||||||||||||||
| Alternate system for Primary Dentition | |||||||||||||||
| upper right | upper left | ||||||||||||||
| 1d | 2d | 3d | 4d | 5d | 6d | 7d | 8d | 9d | 10d | ||||||
| 20d | 19d | 18d | 17d | 16d | 15d | 14d | 13d | 12d | 11d | ||||||
| lower right | lower left | ||||||||||||||
References
- ^ "Tooth Numbering Systems". Oral Health Topics A–Z. American Dental Association. Archived from the original on November 2, 2006. Retrieved 2014-05-26.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) (www.archive.org link) - ^ "Histology: A Text and Atlas by Michael H. Ross • Wojciech Pawlina".