Needle within 1mm of apex
Turn syringe about 1/16 turn
Wait 2 Seconds to Create Puff and to Fill the Neck
The downside of pressure filling has always been, that there is no real good way to determine just when the cement gets to the apex.
Thus since we haven't been able to figure this out either, we have stuck with passive filling.
After the syringe has been fine tuned to make sure that the smallest clockwise turn of the plunger starts the flow and the smallest turn counter-clockwise stops the flow we introduce the needle to within one millimeter of the apex.
Needle within 1mm of apex
Turn syringe about 1/16 turn
Wait 2 Seconds to Create Puff and to Fill the Neck
at 4 Seconds
Begin withdrawing at a steady 1 mm every 2 seconds
at 6 Seconds
at 8 Seconds
Needle Now In Parabolic Safety Zone
Extra Cement Flows Coronally
Canal Full. Overflow in Pulp Chamber