Morita ROOT ZX II User manual

Apical Line
Rotation Speed
Display
Memory
Torque Line
Display
90°
3
1
2
Cutting
Release Load
OTR Function Illustrations
Normal Filing OTR Action
Load
Load exceeds torque setting
File reverses for 90º then moves
forward 180º, and repeats as necessary.
Load is less than torque setting
Filing is performed normally.
Cutting
Files that cut during forward rotation must be used.
1 2
1. Power
2. Memory Selection - OTR Mode
4. Start Filing
3. Check Torque Bar Reading
The ROOT ZX II OTR Module prepares root canals while
helping to prevent file jamming inside the canal.
Press the button to turn on the unit.
What is OTR (Optimum Torque Reverse)?
Usage
• If the OTR release action is triggered before inserting the file in the canal,
raise the torque line by one level.
• To change the memory parameters, refer to the Operation Instructions
(Settings and Changing Memory).
* Set value to trigger the OTR action.
Setting Memory
M1 M2 M3
Rotation Mode OTR OTR Normal
Speed (rpm) 300 500 250
Torque Line (Level) * 1 1 3
Factory Setting for Memories
Press the button to set the memory to the OTR mode.
You may select either M1 or M2 for the file's appropriate
rotation speed.
Quick Guide (OTR Mode)
OTR offers a safer and more efficient method for canal
preparation. OTR reduces the possibility of:
1. File breakage
2. Ledge formation in curved canals
3. Canal transportation
Also, when the handpiece is linked to the apical reverse or
stop function, the working length of the canal can be properly
prepared without damaging the apex.
Since the ROOT ZX II OTR system automatically switches
from regular filing to OTR action depending on the shape and
condition of the file, filing efficiency is not greatly reduced. Also,
the instrument can be used in regular mode for pre-flaring.
For the OTR mode, the torque line setting represents the
toque level when the handpiece starts rotating. It is easi-
er to switch over to the OTR mode when this is set at a
low level. A low torque setting will not have much influ-
ence on the actual torque applied. In the OTR mode, filing
can reach the ROOT ZX II’s maximum torque of
3.5 N/cm so filing efficiency will be the same.
If the OTR function is triggered before the file is inserted
in the canal, increase the torque line setting.
• In OTR mode,“ ” appears in the rotation speed window when the motor
is running.
Step on the foot switch to start the motor handpiece.
The torque line should be set at 1 and
the file used with a vertical motion
(pecking motion).
Torque Line Display
Level 1
Video: www.morita.com/usa/otr

Effective OTR Procedure - Pecking Motion
1. Pre-Flaring
Perform pre-flaring if necessary. For pre-flaring select M3
with the button for standard file rotation.
2. Glide Path
To make a glide path, use the OTR function or hand files
manually. Use a pecking motion with the OTR function.
3. Most Effective Use
For the most effective use of the OTR function, move
it delicately up and down in a pecking motion as you
advance down the canal without letting the file rotate in
a stationary position. (See illustration to the right.) Wipe
the file from time to time to keep the teeth from getting
clogged with filing debris.
These procedures are for use with the OTR mode; they differ from the file manufacturer’s recommendations. Adapt usage depending on the condition of the root canal.
The product names used in this manual are the brand names or registered trademarks of each manufacturer.
OTR Mode Pecking Motion Illustrations
Small load
(Rotates 360º)
File load triggers the
OTR action.
Quickly pull file up.
Possible Order of File Usage (After Making Glide Path)
201604 PUB. M8131-EA Printed in Japan
* Specifications may be changed without prior notice due to improvements.
The OTR function can be used with files that cut in a clock-
wise (CW) direction.
Recommended OTR Start Torque line: “1” For speed, follow
the file manufacturer’s recommendation.
* This Quick Guide is a simplified explanation of how the OTR function works.
Do not fail to read the Operation Instructions before using this instrument.
Corner of mouth
Contrary
Electrode
Apical line
Linkage with Canal Measurement Function (No Foot Switch)
When the contrary electrode is hooked in the corner of the
patient’s mouth, the location of the file tip can be monitored
while shaping the canal.
Also, the motor can be set to stop or reverse when the file
reaches the point designated by the apical line.
Refer to the Operation Instructions for how to set the apical line (Settings and
Changing Memory).
Contrary Electrode Placement Monitor Display
Pro Taper NEXT
Step File Setting
1. To end of working
length X1 (#17 t04)
OTR Start Torque line: 1
Speed: 300 rpm
2. To end of working
length X2 (#25 t06)
(3. If necessary)
X3 (#30 t07)
TF Adaptive
Step File Setting
1. To end of working
length SM1 (#20 t04)
OTR Start Torque line: 1
Speed: 500 rpm
2. To end of working
length SM2 (#25 t06)
(3. If necessary)
SM3 (#35 t06)
EndoWave
Step File Setting
1. To end of working
length #25 t04
OTR Start Torque line: 1
Speed: 300 rpm
2. To end of working
length #30 t04
3. To end of working
length – 1 mm. #35 t06
BioRaCe
Step File Setting
1. To end of working
length BR1 ( #15 t05)
OTR Start Torque line: 1
Speed: 500 rpm
2. To end of working
length BR3 (#25 t06)
3. To end of working
length BR4 (#35 t04)
(4. If necessary)
BR5 (#40 t04)