Guilin Woodpecker Medical Instrument Ai-Motor MotoPex, Инструкция по эксплуатации

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Re-treatment of a root canal obturated
using gutta-percha.
The gutta-percha must be completely
removed to eliminate its inhibitory
effect. After removing the gutta-
percha, a small file should be used to
establish patency through the apical
foramen Place a small amount of
saline in the canal and make sure
saline does not overflow.
Crown or metal prosthesis touching
gingival tissue
Accurate measurement cannot be
obtained if the file touches a metal
prosthesis touching gingival tissue.
Widen the opening at the crown or
wrap the shank portion of the file
with Teflon so that the file is not in
contact with the metal prosthesis
while measuring the working length.
Extremely dry canal
If the canal is extremely dry, there
will be no display of the file
movement until it is very near to
the apex. Moisten the canal with
saline to avoid this problem.
Difference in working length measurement between the apex locator
Radiograph.
Sometimes the reading on the apex locator and the length on the X-ray
image may not correspond. This does not mean the apex locator is not
working properly or that the X-ray exposure is a failure. An X-ray
image might not show the apex correctly depending on the angle of the
X-ray beam, and the location of the apex might seem to be other than
the actual location.