Tooth 61 (FDI): maxillary left primary central incisor

Quick answer

  • Tooth 61 in FDI is Universal F and Palmer ULA: the maxillary left primary central incisor.

The three numbers

Maxillary left primary central incisor in each system
SystemNumber
FDI61
UniversalF
PalmerULA

About this tooth

Name
Maxillary left primary central incisor
Set
Baby (primary)
Position
Upper arch, patient left (upper left, quadrant 6)
Erupts
8 to 12 months
Sheds
6 to 7 years
Roots
1
Root canals
1
Crown surfaces
Mesial, distal, labial (facial), lingual and incisal.
Also written
Letter F (Universal), 6.1 (FDI with a dot), upper left A

Read on 23 October 2026. Sources: American Dental Association, Tooth development charts (primary and permanent); Salama and others, Anatomy of primary incisor and molar root canals, Pediatric Dentistry 1992; Dental anatomy, citing Ash and Nelson, Wheeler's Dental Anatomy, Physiology and Occlusion. Ages and counts are usual figures, and teeth vary from person to person.

On the chart

Tooth 61 marked on the chart, with its side view.

Teeth next to it

Convert any other tooth with the full chart.

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