Dental Age
An estimate of a patient's biological maturity based on the stage of tooth development and eruption, as distinct from chronological age.
Full Definition
Dental age is assessed radiographically using tooth development staging systems such as the Demirjian or Nolla methods, considering crown formation, root development, and apex closure. It is commonly documented in orthodontic records to determine optimal treatment timing, particularly in growing patients. Editors should note that dental age, skeletal age (assessed from hand–wrist or cervical vertebral radiographs), and chronological age are three distinct concepts that must not be conflated. In reports, all three may be recorded and compared; ensuring clarity between them is an important editorial task. The abbreviation 'DA' is occasionally used but should be expanded on first use.
Usage
Usage note: Always distinguish dental age from chronological and skeletal age in documents that reference more than one maturity indicator.
In Context
- "Dental age assessment indicated the patient was dentally advanced for their chronological age of 9 years." — Growth assessment report
- "The records distinguished between the patient's chronological age of 11 and a dental age estimated at 12.5 years." — Interceptive treatment planning note