Palatal Canine
A maxillary canine that has been displaced palatally from its normal position in the arch, most commonly applied to a palatally impacted upper permanent canine.
Full Definition
Palatally displaced canines (PDC) are the most common form of canine ectopia encountered in orthodontic practice and require careful management planning. The term 'palatal canine' is used informally in clinical correspondence to describe this presentation, while formal documents may use 'palatally displaced canine' or 'palatally impacted canine'. Editors should not conflate this with a 'buccally displaced canine', which has different clinical implications. The abbreviation 'PDC' should be defined on first use. In radiographic reports, the canine's relationship to adjacent tooth roots must be described precisely.
Usage
Usage note: Use 'palatally displaced canine' in formal reports and referral letters. 'Palatal canine' is acceptable in clinical notes. Define 'PDC' on first use. Distinguish clearly from buccally displaced or erupting canines.
In Context
- "The DPT confirmed a palatal canine on the upper left with no evidence of root resorption of the adjacent lateral incisor." — Orthodontic assessment letter
- "The term 'palatal canine' was expanded to 'palatally displaced canine (PDC)' on first use as per journal style." — Copyediting note