Rotary files are made from Niti material with thermal activated, made by advanced prossing tehnology, have excellent toughness. These files can adapt to any root canal structure form, does not cause side wear and migration.
1.Negotiate the canal and measure the working length by #10handuse fie
2. Use#15 handuse file or #20/02 file to negotiate the canal.
3.Choose the right size of ZB-one file, set the motor system to reciprocating mode,
4.Canal preparation:Use brushing motion with the iigation liquid,pull shortly
every 1-2mm until the file no longer going down automatically.
5.Pull out and remove the debris on ZB-one file.irigate the cana.use#10 handuse
file, irigate again, repeat 3-5 times until the top of the canal is fully prepared
6.In the lubrication of EDTAgel, negotiate the canal again with #10 handuse file,
make sure the root canal and the apical clear to build a glide
7. When reaching the working lenath, if the too slot of the file is full of debris
preparation is finished. Irrigate,reciprocate and irigate again.
a. Use stainless steel file of same size of the reciprocating file to measure the orifice root canal, If there is a tight feeling, preparation Is finIshed.
b. If not tight, pick a larger size ZB-one file for further preparation.
8. In rare cases use#20 as a transition step when#25 file cannot successfully
prepare the apIcal
Tips: Keeping the whole entire root canal filing with sodium hypochlorite,which can:
1.Lubricate instrument, reduce friction.
3. Irigate and sternilize.
The First-upside-Second-downside segment preparation principle
(1)Prepare a few millimeters each time
(2)prepare the upper root canal with brush technique first
(3)3 pecking-style preparation is needed at root tip(only several millimeters)