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Permanent tooth reference

Tooth #24: Lower left central incisor

In FDI notation, tooth #24 is 31. It is a central incisor in the lower left part of the mouth.

Tooth #24 at a glance

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Location
lower left
Tooth type
central incisor
FDI notation
31
Adjacent teeth
#23 and #25
Opposing tooth
#9
Wisdom tooth
No

What does tooth #24 identify?

Tooth #24 identifies the lower left central incisor in the Universal numbering system used in the United States. It is a front tooth. Its matching FDI designation is 31.

A treatment plan or benefit statement may use the number alone. Confirm the number with the dental office if the document is unclear; a tooth number identifies location and does not explain a diagnosis or treatment by itself.