1
Q
What are the complications of endodontic instrumentation?
A
- blockage
- apical damage (zipping, transportation, enlargement)
- ledges
- perforation
- fractured instrument
2
Q
What is blockage?
A
- dentine and organic debris being packed into canal at apex
- when packed tightly, is as hard as peripheral dentine
- attempts to remove can cause perforation
3
Q
What are ledges?
A
- internal transportation of canal
- occurs when preparing short of working length
- occurs when curved canal instrumented as if it were straight
- time consuming and difficult to bypass
4
Q
A
