Tooth 23 (FDI): maxillary left canine

The three numbers

Careful with plain numbers: Universal 23 is a different tooth, the mandibular left lateral incisor (FDI 32).

About this tooth

Name

Maxillary left canine

Set

Adult (permanent)

Position

Upper arch, patient left (upper left, quadrant 2)

Erupts

11 to 12 years

Roots

1

Root canals

1

Crown surfaces

Mesial, distal, labial (facial), lingual and incisal.

Also written

#11 (Universal), 2.3 (FDI with a dot), upper left 3, cuspid

Read on 23 October 2026. Sources: American Dental Association, Tooth development charts (primary and permanent); Number of roots and canals, from Ingle's Endodontics; 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

Teeth next to it

• Toward the middle: 22 (maxillary left lateral incisor)
• Toward the back: 24 (maxillary left first premolar)
• Across the midline: 13 (maxillary right canine)
• In the other arch: 33 (mandibular left canine)

Convert any other tooth with the full chart.