Tooth numbering

Tooth numbering is a system used by dentists to identify and refer to individual teeth. This system is used globally and has several variations, including the Universal Numbering System, the Palmer Notation Method, and the FDI World Dental Federation notation.

Universal Numbering System

The Universal Numbering System is the most commonly used tooth numbering system in the United States. It begins with the upper right third molar, assigned the number 1, and ends with the lower right third molar, assigned the number 32. This system is used primarily in the United States.

Palmer Notation Method

The Palmer Notation Method is a system used by dentists in the United Kingdom. It uses a combination of numbers and symbols to identify teeth. The mouth is divided into four quadrants, and each tooth is assigned a number from 1 to 8, with 1 being the central incisor and 8 being the third molar.

FDI World Dental Federation notation

The FDI World Dental Federation notation is an international standard for tooth numbering. It uses a two-digit system, with the first digit representing the quadrant and the second digit representing the tooth within the quadrant. This system is widely used outside of the United States and the United Kingdom.

Importance of Tooth Numbering

Tooth numbering is essential in dental practice for accurate record keeping, communication between dental professionals, and planning treatment. It allows for precise identification of teeth in both clinical and radiographic examinations.

See Also

• Dental anatomy
• Dental notation
• Human tooth