Tooth 32 (FDI): mandibular left lateral incisor

The three numbers

Careful with plain numbers: Universal 32 is a different tooth, the mandibular right third molar (FDI 48).

About this tooth

Name

Mandibular left lateral incisor

Set

Adult (permanent)

Position

Lower arch, patient left (lower left, quadrant 3)

Erupts

7 to 8 years

Roots

1

Root canals

1

Crown surfaces

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

Also written

#23 (Universal), 3.2 (FDI with a dot), lower left 2

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: 31 (mandibular left central incisor)
• Toward the back: 33 (mandibular left canine)
• Across the midline: 42 (mandibular right lateral incisor)
• In the other arch: 22 (maxillary left lateral incisor)

Convert any other tooth with the full chart.