Furcation Perforation
Pronunciation: fer-KAY-shun per-fuh-RAY-shun
An iatrogenic or pathological communication between the root canal system and the periodontal ligament space occurring at the furcation of a multi-rooted tooth.
Full Definition
A furcation perforation is a specific subtype of endodontic perforation that occurs at the point where the roots of a multi-rooted tooth diverge (the furcation), creating an abnormal opening between the pulp space and the external tooth surface or periodontal tissues. It may result from excessive bur penetration during access cavity preparation, from caries, or from internal resorption extending to that area. The defect carries a guarded-to-poor prognosis due to its proximity to the crestal bone and periodontal attachment. Editors must distinguish it from lateral root perforation and from apical perforation. Accurate site terminology ('furcation', 'lateral', 'apical') is critical in prognosis-reporting and case write-ups.
Usage
Usage note: Distinguish from 'lateral perforation' (occurring on the root surface) and 'apical perforation' (at the apex). The location qualifier is clinically and prognostically significant.
In Context
- "Post-operative imaging confirmed a furcation perforation, which was subsequently sealed with mineral trioxide aggregate." — Endodontic case report complication section
- "The operative note must specify whether the perforation is apical, lateral, or furcation in origin." — Clinical documentation guideline