6.3.3 Over-instrumentation
A red "Blood drop" icon and warning sound indicate that the file has passed the Apex. Red
numerical values changing from
+0.1
to
+0.5
indicate relative depth of over-instrumentation
the "OVER"
and may be helpful during determination of canal patency. After the value
+0.5
reading appears.
To return to the apical position, gently retreat the file until the "Blood drop" disappears and
"APEX" indication returns.
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