20144526
Procedural complications
- Ledge Formation
- Why?
- Not a proper
straight-line
access
- Not a proper
glyde path
- Not a proper
glyde path
- Not a proper
straight-line
access
- What is it?
- Artificial
irregularity
createdon
surface of root
canal wall
- Artificial
irregularity
createdon
surface of root
canal wall
- Usually happens in....
- Smaller canals
- Curved canals
- Longer canals
- Inadequate
irrigation or
lubrication
- Smaller canals
- Solutions
- Flexible NiTi files
- Use smaller
instrument
to bypass
ledge
- A little
bend in
the file
- Flexible NiTi files
- Why?
- Instrument separation or fracture within the confines of a canal
- Why?
- Excessive force
- Jumping up a file size
- Inadequate irrigation or lubrication
- Not replacing files often enough
Nota:
- Too many times sterilized
- Excessive force
- Flexible NiTi more likely to fracture
- Why?
- Perforation
- Coronal
- Through the crown
- Avoid by burring
following the axis of the
tooth
- Avoid by burring
following the axis of the
tooth
- Through the crown
- Furcal
- Through pulpal floor
- Through pulpal floor
- Strip
- Excessive coronal flaring
- Shaves off too much dentin
- Shaves off too much dentin
- Excessive coronal flaring
- Root
- For example
through a ledge
foration (lateral
perforation)
- Immediate
hemorrhage or
sudden pain
Nota:
- Due to the PDL: lots of vessels
- Immediate
hemorrhage or
sudden pain
- More apical,
better prognosis
- Internal repair with MTA
- For example
through a ledge
foration (lateral
perforation)
- Coronal
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