We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
Two digits: quadrant then tooth.
Also known as: Two-digit tooth notation, World Dental Federation notation
The international tooth-numbering system giving each tooth a two-digit number for its quadrant and position.
Numbers each tooth by quadrant and position, spoken as two separate digits.
Contexts: Medicine, Laboratory
Spoken as 'one-six' rather than 'sixteen' precisely because the two digits are separate fields, and reading it as a single number is the commonest error made by people new to the notation.
Contexts: Medicine, Laboratory
Extends to the primary dentition by numbering the quadrants five to eight, so the same scheme covers both dentitions without a separate system.
Contexts: Medicine, Laboratory
A pair of digits written together, the first naming the quadrant from one to four and the second the tooth from the midline outward from one to eight.
The same numeral names different teeth in the two systems, and a number is ambiguous without naming its convention.