D Devices D LOCATOR Manual De Instrucciones página 24

Problems
Display not steady while
measuring: the measure-
ment result is rather longer
or shorter; numerical display
irregular.
24
Possible causes
If there is still pulp in the root
canal?
If the needle touched the
metal repaired material?
If the adjacent surface has
caries?
Whether there is collateral or
the tooth root is broken?
Is it because in addition to the
top pulp chamber, low tooth
crown? Or there are residues
left?
Solutions
If there is much pulp left in the
root canal, the root canal leng-
th can't be measured correctly.
Once the needle touched
the metal repaired material,
current measurement from the
gums to the periodontal tissue
loss, the screen will display
"OVER".
from caries of
the adjacent surface to gums,
then the root canal length can't
be measured correctly.
Once the needle reached the
collateral or the broken part of
the tooth root, current measu-
periodontal ligament, it dis-
plays "OVER".
Use rubber dam to prevent the