46. RCT Complications 4
Aug 18, 2020 ·
2m 37s
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Description
LEDGE FORMATION Ledge is a nick formed on the wall surface of a root canal, especially at the curves that prevent the instrument going further towards the apex- because...
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LEDGE FORMATION
Ledge is a nick formed on the wall surface of a root canal, especially at the curves that prevent the instrument going further towards the apex- because it gets stuck there.
Caused when instrument that is not pre-curved is inserted into the canal with excessive pressure
Take a small size file – apply EDTA & do circumferential filing for long time- it will help
smoothen out the ledge by cutting away excessive dentine.
Thereby bypass the ledge
EDTA helps dissolve & soften the area - chelation property
After correction of ledge & bypass, the wall becomes very thin, therefore chances of perforation - most important complication
Correction at furcation
a) Stop RCT
b) Place MTA / CaOH / GIC
c) Thus the form of a barrier
d) Continue with RCT
e) Or OBT only after healing
Management of perforation is done after BMP & before OBT
PERFORATION
a. At furcation / coronal 3rd – good prognosis
b. At middle 3rd / apical 3rd – poor prognosis
c. If perforation at apical 3rd – poor prognosis
d. If at furcation – best prognosis
STRIPPING
Danger zone
Mand – mesial aspect of distal root canal- inside aspect
of the curved area
Treated with MTA
Rotary instruments
Due to excessive flaring of canals
show less
Ledge is a nick formed on the wall surface of a root canal, especially at the curves that prevent the instrument going further towards the apex- because it gets stuck there.
Caused when instrument that is not pre-curved is inserted into the canal with excessive pressure
Take a small size file – apply EDTA & do circumferential filing for long time- it will help
smoothen out the ledge by cutting away excessive dentine.
Thereby bypass the ledge
EDTA helps dissolve & soften the area - chelation property
After correction of ledge & bypass, the wall becomes very thin, therefore chances of perforation - most important complication
Correction at furcation
a) Stop RCT
b) Place MTA / CaOH / GIC
c) Thus the form of a barrier
d) Continue with RCT
e) Or OBT only after healing
Management of perforation is done after BMP & before OBT
PERFORATION
a. At furcation / coronal 3rd – good prognosis
b. At middle 3rd / apical 3rd – poor prognosis
c. If perforation at apical 3rd – poor prognosis
d. If at furcation – best prognosis
STRIPPING
Danger zone
Mand – mesial aspect of distal root canal- inside aspect
of the curved area
Treated with MTA
Rotary instruments
Due to excessive flaring of canals
Information
Author | DrMayakha Mariam |
Website | - |
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