Alphanumeric system of dental notation
The alphanumeric system of dental notation is a modification of Palmer notation for numbering and naming teeth made for electronic transcription. Its use is primarily in the United Kingdom 1,3,4.
First, the jaws are divided into four quadrants 1-5. Each quadrant is denoted by their English initialism for upper (U) or lower (L) jaw and the patient's right (R) or left (L) side:
- right upper (maxillary) quadrant = UR
- left upper (maxillary) quadrant = UL
- left lower (mandibular) quadrant = LL
- right lower (mandibular) quadrant = RL
- central incisor = 1
- lateral incisor = 2
- canine/cuspid = 3
- 1st premolar/bicuspid = 4
- 2nd premolar/bicuspid = 5
- 1st molar = 6
- 2nd molar = 7
- 3rd molar = 8
The quadrant designation is the prefix, followed by the individual tooth number. Therefore, the notation UR1 indicates the permanent right upper central incisor.
As in the Palmer notation, the deciduous teeth are lettered A through E from mesial to distal in each quadrant 5:
- central incisor = A
- lateral incisor = B
- canine = C
- 1st molar = D
- 2nd molar = E
The prefix for each quadrant is as in the permanent teeth.
Therefore, the notation LRB indicates the primary right lower lateral incisor.
- 1. Robert Ireland. A Dictionary of Dentistry. (2010) ISBN: 9780199533015 doi: 10.1093/acref/9780199533015.001.0001
- 2. Carole Hollins. Levison's Textbook for Dental Nurses. (2019) ISBN: 9781119401322
- 3. Pemberton MN, Ashley M. The use and understanding of dental notation systems in UK and Irish dental hospitals. (2017) British dental journal. 223 (6): 429-434. doi:10.1038/sj.bdj.2017.731 - Pubmed
- 4. Grace M. Dental notation. (2000) British dental journal. 188 (5): 229. doi:10.1038/sj.bdj.4800438 - Pubmed
- 5. Havale R, Sheetal BS, Patil R, Hemant Kumar R, Anegundi RT, Inushekar KR. Dental notation for primary teeth: a review and suggestion of a novel system. (2015) European journal of paediatric dentistry. 16 (2): 163-6. Pubmed