Palmer notation
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Palmer notation is a system used by dentists to associate information to a specific tooth. Although supposedly superseded by the FDI World Dental Federation notation, it overwhelming continues to be the preferred method used by dental students and practitioners in the United Kingdom.[1]
It was originally termed the Zsigmondy system after the Hungarian dentist Adolf Zsigmondy who developed the idea in 1861, using a Zsigmondy cross to record quadrants of tooth positions.[1]. Adult teeth were numbered 1 to 8, and the child primary dentition (also called deciduous, milk or baby teeth) were depicted with a quadrant grid using Roman numerals I, II, III, IV, V to number the teeth from the midline. Palmer changed this to A, B, C, D, E. This makes it less confusing and less prone to errors in interpretation.
The Palmer notation consists of a symbol (┘└ ┐┌) designating in which quadrant the tooth is found and a number indicating the position from the midline. Adult teeth are numbered 1 to 8, with deciduous (baby) teeth indicated by a letter A to E. Hence the left and right maxillary central incisor would have the same number, "1", but the right one would have the symbol, "┘", underneath it, while the left one would have, "└".
Table of codes
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.
| Permanent Teeth | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| upper right | upper left | ||||||||||||||
| 8┘ | 7┘ | 6┘ | 5┘ | 4┘ | 3┘ | 2┘ | 1┘ | └1 | └2 | └3 | └4 | └5 | └6 | └7 | └8 |
| 8┐ | 7┐ | 6┐ | 5┐ | 4┐ | 3┐ | 2┐ | 1┐ | ┌1 | ┌2 | ┌3 | ┌4 | ┌5 | ┌6 | ┌7 | ┌8 |
| lower right | lower left | ||||||||||||||
| Deciduous teeth (baby teeth) | |||||||||||||||
| upper right | upper left | ||||||||||||||
| E┘ | D┘ | C┘ | B┘ | A┘ | └A | └B | └C | └D | └E | ||||||
| E┐ | D┐ | C┐ | B┐ | A┐ | ┌A | ┌B | ┌C | ┌D | ┌E | ||||||
| lower right | lower left | ||||||||||||||
With the move from written dental notes to electronic records, some difficulty in reproducing the symbols has been encountered.[1]
On a standard keyboard 'slash' and 'backslash' may be used as a crude approximation to the symbols with numbers placed before or afterwards; hence 3/ is 3┘ and /5 is ┌5
One advantage of Palmer notation is that it can produce a very graphical image, akin to a 'map' of the dentition; tooth transpositions or edentulous spaces can easily be depicted if desired. It would also be feasible to introduce additional alphabetic characters or other symbols, for example to denote supernumerary teeth or bridge pontics, to which a purely numerical method such as the FDI system does not lend itself easily.[1]
See also
References
- Bunn S (19 May 2006). Tooth Numbering. Retrieved on 2006-10-16.
Footnotes
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
