Overfilling / extrusion of filling materials beyond apex
What it is
Obturation where gutta-percha and/or sealer extends beyond the apical foramen into periapical tissues ("overextension/extrusion"), rather than terminating at an appropriate apical endpoint. The goal is to fill the canal space without exceeding the anatomical apex.
Why it happens
• Working length too long (EAL not used correctly; poor radiographic confirmation) • Loss of apical constriction from over-instrumentation, apical resorption, open apex, transportation → no apical stop • Excessive sealer and hydraulic pressure during obturation (especially with warm techniques or heavy sealer load) • Inadequate apical gauging/master cone fit → cone/sealer driven through the foramen
The full clinical mistake entry includes
- How to avoid it — the prevention protocol
- The clinical tip experienced clinicians use
- The documented reference behind the mistake
More clinical mistakes
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