Endodontic Complications Flashcards
How to avoid perforation?
Pre-op planning
Inspect external surfaces
Think in relation to CEJ
Use of reference points
Correct angulation and position of access cavity
Safe ended endo-Z bur
Knowledge of anatomy
Measure pre-op the distance from pulp roof to pulp floor
How does blockage occur? Prevent?
Dentine debris being packed into apical portion of RC
- can cause faux canal being cut and perforation
Irrigation with EDTA and recapitulation frequently
How to avoid apical zipping / transportation?
Always pre-curve initial small sized hand instruments
Do not skip instruments in sequence
Never rotate instruments in curved canals
Why does instrument separation occur?
Torsional stress
- extensive instrument surface encounters excessive friction within canal walls
Instrument tip larger than canal section being shaped
Cyclic fatigue
- tension and compression cycles on the instrument in curved canals leading to fatigue and failure
Give post-op complications of endodontic treatment
Pain
- and need for pain control
Swelling
Failure
Prosthetic replacement
Why might obturation be too short?
Incorrect WL determination
Prep issues
- dentine plug
- ledges
- Incomplete prep
Obturation error
How to avoid blockages?
Don’t skip files
Don’t force files
Ensure file is passive before moving to bigger file
Recapitulate and patency file
Reservoir of irritant in pulp chamber while irrigating
How to avoid file fracture?
Know instrument limits and metallurgy
Use recognised technique
Pay attention to degrees of rotation of file
Lubricate canal
