The FDI Dental Numbering System

Teeth in the Care For Smiles Smile Gallery are numbered according to the internationally recognised two-digit FDI (Federation Dentaire Internationale) numbering system used by dentists.

This numbering system is used to record information on the health of a patient's teeth and to efficiently share information with other oral health professionals. Different numbering systems are used for adult teeth and children's deciduous teeth.

The FDI Dental Numbering System for Adult Teeth

For adults, the mouth is divided into quadrants numbered from 1 to 4 clockwise starting from the upper-left from the dentist's view. (The patient's right corresponds to tooth chart's left side).

The adult teeth are numbered from 1 to 8, going from the central incisor, canines, premolars to the third molar.

The FDI Dental Numbering System for Adult Teeth

The FDI Dental Numbering System for Children's Teeth

For children, the mouth is divided into quadrants numbered from 5 to 8 clockwise starting from the upper-right from the dentist's view. (The patient's right corresponds to tooth chart's left side).

The children's deciduous (or baby) teeth are numbered from 1 to 5, going from the central incisor, canines to the premolars.

The FDI Dental Numbering System for Children's Teeth