Number of Teeth in the Lower Jaw: Complete Breakdown

The adult lower dental arch (mandible) normally contains 16 teeth if all third molars (wisdom teeth) are present, or 14 teeth if wisdom teeth are absent or extracted.

Tooth Distribution (Per Side)

Tooth Type	Count (per side)	Total (both sides)
Central incisor	1	2
Lateral incisor	1	2
Canine	1	2
First premolar	1	2
Second premolar	1	2
First molar	1	2
Second molar	1	2
Third molar (wisdom tooth)	0–1	0–2

Total

• Without third molars: 14 teeth (7 per quadrant)
• With third molars: 16 teeth (8 per quadrant)

Primary (Deciduous) Dentition

Lower arch: 10 teeth (central incisor, lateral incisor, canine, first molar, second molar × 2 sides). No premolars.

Variations (supernumerary, congenitally missing) are common. Dental charting uses Universal (1–32) or FDI (two-digit) notation.