6 Operation
Page 22 / 41
If the crown is broken, a segment of
the gingival tissue enters the lumen,
and the contact between the gingival
tissue and the root file causes
electrical leakage, which cannot be
accurately measured. In this case, the
appropriate material should be used to
isolate the gingival tissue.
The crack tooth Leakage through
branch of the root canal
Broken teeth can cause electrical
leakage and cannot be accurately
measured.
Branch tubes can also cause leakage.
Retreatment canal which was filled
with gutta-percha
The gutta-percha must be completely
removed to eliminate its insulation,
then pass a small file all the way
through the apical foramen and then
put a little saline in the canal, but do
not let it overflow the canal opening.
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