Morita DENTA PORT ZX User manual

Apex Locator
Canal Measurement Module
Operation Instructions
* This is the Canal Measurement Module. The Canal Preparation and Light Cure
Module (sold separately) can be easily connected to this module so that preparation
can be performed while measuring the canal and the light cure can be applied.

Operation 2018-10-21
Thank you for purchasing the DENTAPORT ZX Canal Measurement Module.
For optimum safety and performance, read this manual thoroughly before using the equipment and pay close
attention to warnings and notes. Keep this manual in a readily accessible place for quick and easy reference. This
manual contains essential safety information.
Disclaimer
J. MORITA MFG. CORP. will not be responsible for accidents, equipment damage, or bodily injury resulting
from:
1.Repairs made by personnel not authorized by J. MORITA MFG. CORP.
2.Any changes, modifications, or alterations of its products
3.The use of products or equipment made by other manufacturers, except for those by J. MORITA MFG.
CORP.
4.Maintenance or repairs using parts or components other than those specified by J. MORITA MFG. CORP.
and other than in their original condition
5.Operating the equipment in ways other than the operating procedures described in this manual or resulting
from the safety precautions and warnings in this manual not being observed
6.Workplace conditions and environment or installation conditions which do not conform to those stated in
this manual such as improper electrical power supply
7.Fires, earthquakes, floods, lightning, natural disasters, or acts of God.
The useful life of the DENTAPORT ZX is 6 years (based on self-certification) from the date of shipment
provided it is regularly and properly inspected and maintained.
J. MORITA MFG. CORP. will supply replacement parts and be able to repair the product for a period of 10
years after the manufacture of the product has been discontinued. For the duration of this period, we will supply
replacement parts and be able to repair the product.

Operation 2018-10-21
Table of Contents
Page
1. Prevent Accidents..................................................................................................................................... 1
In Case of Accident ........................................................................................................................................3
Intended Operator Profile .............................................................................................................................3
Patient Population..........................................................................................................................................3
2. Parts Identification .................................................................................................................................. 4
3. Assembling the Unit................................................................................................................................. 5
4. Before Using the Unit .............................................................................................................................. 6
Connecting the Probe Cord...........................................................................................................................6
Checking the Function...................................................................................................................................6
Checking the Function with the Tester.........................................................................................................7
5. Operating the Unit................................................................................................................................... 8
Operation Panel Display and Switches ........................................................................................................8
Setting and Changing Memory .....................................................................................................................9
Meter Display ...............................................................................................................................................10
Operating the Unit .......................................................................................................................................11
Root Canals not suitable for Electronic Measurement .............................................................................13
EMR and Radiography ...............................................................................................................................15
6. After Using the Unit............................................................................................................................... 16
7. Maintenance ........................................................................................................................................... 18
Autoclavable Components...........................................................................................................................18
Non-Autoclavable Components: Wipe with Ethanol ................................................................................21
Non-Autoclavable Components: Wipe with Neutral Detergent and Moistened Cloth ..........................22
8. Replacement Parts, Transport and Storage Environments ............................................................... 23
Replacement Parts .......................................................................................................................................23
Transport and Storage Environments ........................................................................................................23
9. Inspection ............................................................................................................................................... 23
10. Troubleshooting ..................................................................................................................................... 24
11. Technical Specifications ........................................................................................................................ 26
Specifications ................................................................................................................................................26
Symbols .........................................................................................................................................................27
Disposal .........................................................................................................................................................27
Service ...........................................................................................................................................................27
Electromagnetic Disturbances (EMD) ....................................................................................................... 28

Operation 2018-03-22
Page1
1. Prevent Accidents
Most operation and maintenance problems result from insufficient attention being paid to basic safety precautions
and not being able to foresee the possibilities of accidents.
Problems and accidents are best avoided by foreseeing the possibility of danger and operating the equipment in
accordance with the manufacturer’s recommendations.
First thoroughly read all precautions and instructions pertaining to safety and accident prevention; then, operate
the equipment with the utmost caution to prevent either damaging the equipment itself or causing bodily injury.
Note the meaning of the following symbols and expressions:
This warns that it may result serious injury of the patient or operator if
the instructions are not followed properly.
The user can not use in such a way that may result in serious injury of
the patient or operator.
This alerts the user to the possibility of damage to the equipment,
potential injury of the patient or operator, or important points
concerning operation and performance.
The user (e.g., healthcare facility, clinic, hospital etc.) is responsible for the management, maintenance and use of
medical device.
This equipment must only be used by dentists and other legally licensed professionals.
Do not use this equipment for anything other than its specified purpose.

Operation 2018-10-21
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This equipmentt must not be connected to or used in combination with any other apparatus or system.
It must not be used as an integral component of any other apparatus or system.
J. MORITA MFG. CORP. will not be responsible for accidents, equipment damage, bodily injury or
any other trouble which results from ignoring this prohibition.
Accurate canal measurement is not always possible depending on the shape and condition of the
tooth as well as a decline in the equipment’s performance.
Do not use damaged file holders; an accurate measurement can not be made with a damaged file
holder.
When continuous tone is heard while the main power switch is on and without any operation, some
electrical part may be malfunction. Do not use the equipment and send it to J. MORITA OFFICE for
repairing.
A rubber dam should be used when performing endodontic treatment.
Caution: US Federal law restricts this equipment to sale by or on the order of a dentist in U.S.A.
The DENTAPORT ZX needs special precaution regarding EMC and needs to be installed and put
into service according to the EMC information provided in the Accompanying Documents.
Portable and mobile RF communications equipment can affect the DENTAPORT ZX.
Use of the parts other than those accompanied or specified by J. MORITA MFG. CORP. may result
in increased EMC emissions or decreased EMC immunity of the DENTAPORT ZX.
The DENTAPORT ZX should not be used adjacent to or stacked with other equipment and that if
adjacent or stacked use is necessary, the DENTAPORT ZX should be observed to verify normal
operation in the configuration in which it will be used.
No modification of this equipment is allowed.
Do not use this equipment in conjunction with an electric scalpel or on patients who have a
pacemaker.
Do not use this equipment in the medical operation room.
Blocked canals cannot be accurately measured.
This equipment must not be connected to or used in combination with any other apparatus or system.
It must not be used as an integral component of any other apparatus or system.
J. MORITA MFG. CORP. will not be responsible for accidents, equipment damage, bodily injury or
any other trouble which results from ignoring this prohibition.
Illumination devices such as fluorescent lights and the Film viewer which use an inverter can cause
the DENTAPORT ZX to operate erratically. Do not use the DENTAPORT ZX near devices such as
these.
Electromagnetic wave interference could cause this device to operate in an abnormal, random and
possibly dangerous manner. Cellular phone, transceivers, remote controls and all other devices
which transmit electromagnetic waves located inside the building should be turned off.
Do not perform maintenance while using the instrument for treatment.

Operation 2018-03-22
Page3
In Case of Accident
If an accident occurs, the DENTAPORT ZX must not be used until repairs have been completed by a
qualified and trained technician authorized by the manufacturer.
Intended Operator Profile
This equipment must only be used by dentists and other legally licensed professionals.
Patient Population
Age: Child to Elderly
Weight: N/A
Nationality: N/A
Sex: N/A
Health: It is not intended for use on patients wearing pacemakers or ICDs.
Condition: Conscious and mentally alert person. (Person who can stay still during treatment.)
This equipment is not recommended for use in children under 12 years of age.

Operation 2018-03-22
Page4
Liquid Crystal Display
Set Switch
Select Switch
Mode Switch
File Holder
Contrary Electrode (Lip Clip)
Probe Cord
Canal Measurement Module
Power Switch
2. Parts Identification
Accessories
Probe Cord File Holder Contrary Electrode
Code No.7503661 Code No.7503670
Code No.7503680
Test e r AA Battery Long File Holder (option)
Code No.7503910
Code No.7503673

Operation 2018-03-22
Page5
3. Assembling the Unit
Placing the Batteries
Canal Measurement Module is shipped without the
batteries installed. Remove the cover and install the 3 AA
batteries.
1. Hold the cover and slide the stopper on the bottom towards
the liquid crystal display.
2. Slide the cover in the direction indicated by the arrow in the
illustration and remove it from the Canal Measurement
Module.
3. Place the 3 AA batteries included in the package as indicated
on the equipment.
(1) Insert the batteries by first pressing center of the minus
end against its spring contact and then sliding the plus end
down into place.
(2) Make sure the contacts are not bent or damaged.
Do not reverse the plus and
minus poles.
Never allow the spring contact
to push against the edge of the
battery. This could damage
the outer cover causing a short
or a leakage of battery liquid.
4. Line up the tabs on the cover with the notches on the Canal
Measurement Module and slide the cover on.
5. Slide the cover all the way down until it is securely attached.
If the catch on the bottom is not back in its original place
after attachment, push it in the direction shown by the
arrow in the illustration.
After installation, give the cover a light tug to confirm it is
securely attached
Notches Tabs
Canal Measurement
Module Cover
Cover
2
Cover
Canal Measurement
Module
4
5
Stopper
Cover
Canal Measurement Module
1
3
BAD

Operation 2018-03-22
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4. Before Using the Unit
Connecting the Probe Cord
1. Insert the probe cord completely into the jack on the left side
of the Canal Measurement Module.
Handle the Canal Measurement Module carefully; do not
drop, bump or expose the equipment to other kinds of
impacts or shocks. Rough handling could cause damage.
Make sure the plug is securely plugged into the jack. A poor
connection can prevent measurement.
Do not drop anything on or bang the plug after it has been
inserted into the jack.
2. Insert the file holder’s gray male plug into the gray female
connector on the probe cord. Insert the contrary electrode
into the white female connector on the probe cord.
Make sure to match colors of the file holder and contrary
electrode to the probe cord.
Measurements cannot be made if these connections are
reversed.
Checking the Function
This checking procedure should be followed at the beginning of
every day.
1. Press the Power switch to turn the unit on. The
measurement display will appear.
* The instrument turns itself off if it is not used for five
minutes.
2. Check that the probe cord is properly plugged into the jack.
3. Check that the file holder and contrary electrode are properly
connected to the probe cord.
4. Contact metal part of the file holder with contrary electrode.
Probe Cord Plug
Probe Cord Connector
Contrary Electrode
Probe Cord Connector
(gray)
File holder Plug
(gray)
Plug in
(white)
Plug in
Contrary
Electrode
File Holder Contact
Power Switch

Operation 2018-03-22
Page7
5. Check that all the meter indicator bars on the display are lit,
the word “APEX” flashes and audible beep becomes
continuous.
Check the DENTAPORT ZX’s operation before each
patient. If the indicators in the display do not all appear
normally, the instrument may not be able to make an
accurate measurement. In this case, stop using the
instrument and have it repaired.
Checking the Function with the Tester
Check Canal Measurement Module’s performance with the tester
once a week.
1. Press the Power switch to turn the unit on.
2. Insert the tester into the probe cord jack.
Check that the meter indicates within ±3 bars away from
(above or below) 1.
* The meter may jump when the tester is inserted. If it does,
wait for about one second until the meter stabilizes and then
check the reading.
* If the reading is 4 or more bars away from 1, the unit will
not make accurate measurement. In this case, contact your
local dealer or J. MORITA OFFICE.
3. Remove the tester and connect the probe cord.
4. Connect the file holder and contrary electrode to the probe
cord.
5. Touch the contrary electrode with the file holder’s contact
tip.
Check that all the canal length indicator bar on the display
are lit, the word “APEX” flashes and audible beep becomes
continuous.
Must be
within
this range
Te s t e r
Probe Cord Jack

Operation 2018-10-21
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5. Operating the Unit
Operating Environments
Temperature: +10°C to +35°C (+50°F to +95°F)
Humidity: 30% to 80% (without condensation)
Atmospheric Pressure: 70 kPa to 106 kPa
Operation Panel Display and Switches
Sound Volume
Off, Low, High Battery Power Indicator
This bar graph indicates
remaining battery power.
Replace the batteries when this
indicator begins flashing.
Never use the unit if the
battery power indicator is
flashing on and off. The
unit will not function
properly if the battery
power is low.
* Battery power indicator
also appears when the
Canal Preparation and
Light Cure Module is
connected.
Memory (M1, M2, and M3)
For details, see "Setting and
Changing Memory" on page 9.
Apical Line
Use this point as an estimate
for root canal measurement.
It can be set anywhere
between 2 and Apex.
Canal Length Indicator Bar
Meter Gauge
* The numerals 1, 2 and 3 do
not represent length in
millimeters.
Power Mode Select Set
Switch Switch Switch Switch

Page9
Operation 2018-03-22
Setting and Changing Memory
Use the Mode Switch to select M1, M2 or M3. Use the Select switch to select sound volume and Apical Line.
Use the Set Switch to set the memory content.
Press Mode to select the memory.
Press
Press Select to select the item.
Press
(The display will briefly flash
on and off.)
Press Set to set the memory content.
Press
M1
(Memory 1)
M2
(Memory 2)
M3
(Memory 3)
Root Canal
Measurement
Mode 1
Root Canal
Measurement
Mode 2
Root Canal
Measurement
Mode 3
Sound volume selected
Apical Line selected.
The apical line can be
set anywhere between
2 and Apex.
* All memory settings will be retained even after the unit is turned off. Simply select M1, M2, or M3 to
use those memory settings.
Check the settings displayed after selecting memories.
Alarm Sound Selection
In case 2 or more units are being used, there are two different sounds for the alarm so that you can tell one
from the other. To change the sound, hold down the Set switch and turn the unit on.
* The sound that signals switch operation will also change.
* The sound cannot be memorized separately by the three memories (M1, M2 and M3).
* Turn the unit off to save the selection.
Flashes
Apical Line
Flashes
Turn the sound off.
Set the sound volume
low.
Set the sound
volume high.

Operation 2018-03-22
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Meter Display
■The position of the file tip is shown by the canal length
indicator bar on the display. The apical line flashes on and off
once file is inserted into the root canal.
Do not let the file touch the gums. This will cause the
meter to jump to Apex.
If the canal is extremely dry, the meter may not move until
it is quite close to the apex.
If the meter does not move, try moistening the canal with
oxydol or saline.
Occasionally the canal length indicator bar will make a
sudden and large movement as soon as the file is inserted
into the root canal, but it will return to normal as the file is
advanced down towards the apex.
In some cases such as a blocked canal, a measurement
cannot be made. (For details, see “Root Canals not
suitable for Electronic Measurement” on page 13.)
Always check the measurement with an X-ray. In some
cases, an accurate measurement cannot be made
because of the canal shape, unusual cases, or poor
performance of the instrument.
Stop using the instrument immediately if you sense
something odd or abnormal while taking a
measurement.
■The meter’s 0.5 reading indicates that the tip of the file is in or
very near the apical constriction.
* The numerals on the meter gauge do not represent
millimeters.
■If the file tip reaches the major foramen, the alarm sound will
sustain beep, and the word "APEX" and the little triangle next
to the apical line will start to flash.
Flashes
A
pical Line
Flashes
Flashes

Page11
Operation 2018-03-22
Operating the Unit
1. Turn the unit on.
2. Hook the contrary electrode in the corner of the patient's
mouth.
Do not use an ultra sonic scaler with the contrary electrode
attached to the patient.
Electrical noise from the scaler could interfere with canal
measurements.
Make sure that the contrary electrode, file holder etc. do
not come into contact with an electric power source such as
an electrical socket. This could result in a severe
electrical shock.
The contrary electrode could cause an adverse reaction if
the patient has an allergy to metals. Ask the patient about
this before using the contrary electrode.
Take care that medicinal solutions such as formalin cresol
(FC) or sodium hypochlorite do not get on the contrary
electrode or the file holder. These could cause an adverse
reaction such as inflammation.
3. Clip the file holder to the metal shaft of the file.
Always clip the file holder to the upper part of file shaft,
near the handle. The metal and plastic part of the file
holder can be damaged if they are attached to the file’s
cutting part or the transition to the cutting part.
1. Press in direction
of arrow with the
thumb.
2. Clip file.
3. Release thumb.
File Holder.
Press
Contrary
Electrode
Corner of Mouth
File or Reamer Handle
Metal part o
f
file holder
Cutting part and
transition to cutting
part.
* Do not clip onto this
part!

Operation 2018-03-22
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Use files and reamers with plastic handles only. If the file has a metal handle, electrical leakage will
occur when the handle is touched by fingers and it will prevent an accurate root canal measurement.
Even if the file handle is made of plastic, make sure not to touch the metal part of the file with finger.
Do not use damaged file holders. An accurate measurement cannot be made using a damaged file holder.
Clip the file as shown in illustration #1 below. If the file is forced into the position shown in illustration #2,
it may not make a correct measurement and the file holder could be damaged.
4. Press the mode switch to select memory 1, 2 or 3 (M1, M2 or
M3).
* See “Setting and Changing Memory", on page 9 for how to
set the memory contents.
*While an actual measurement is being made, none of the
switches, except the power switch, will work.
5. Insert the file (in most case size 10) until the meter reads 0.5
(this point can be recognized by the change in the alarm
sound as well). Then advance the file with slow clockwise
turns until the word “APEX” begins to flash. When the
apex is reached, turn the file with slow counter clockwise
turns until meter reads 0.5 again. Since some canals have
multiple constrictions, it is essential that the file be taken to
the apex then returned to the apical constriction (0.5 reading).
Position the rubber stopper on the tooth surface as a reference
point to determine the root canal’s working length.
6. Determine the working length
■If the file tip is at the 0.5 meter reading, subtract from 0.5
to 1.0 mm to determine the working length.
* These working lengths will differ somewhat depending
on each individual tooth. This discrepancy must be
judged by the dentist as he works on the tooth.
Make sure to take an X-ray to check the results.
Rubber Stoppe
r
File Holder
0.5 Reading
Mode Switch
GOOD
1
BAD
2

Page13
Operation 2018-03-22
Root Canals not suitable for Electronic Measurement
Accurate measurement cannot be obtained with the root canal conditions shown below.
They may be cases other than these where an accurate measurement cannot be made.
Root Canal with a large apical foramen
Root canal that has an exceptionally large apical foramen due to
a lesion or incomplete development cannot be accurately
measured; the results will show shorter measurement than the
actual length.
Root Canal with blood, saliva or a chemical solution
overflowing from the opening
If blood, saliva, or a chemical solution overflow from the
opening of the root canal and contacts the gums, this will result
in electrical leakage and an accurate measurement cannot be
obtained. Wait for bleeding to stop completely. Clean the inside
and opening of the canal thoroughly to get rid of all blood, saliva
and chemical solutions and then make a measurement.
Broken crown
If the crown is broken and a section of the gingival tissue
intrudes into the cavity surrounding the canal opening, contact
between the gingival tissue and the file will result in electrical
leakage and an accurate measurement cannot be obtained. In
this case, build up the tooth with a suitable material to insulate
the gingival tissue.
Fractured tooth
Leakage through a branch canal
Fractured tooth will cause electrical leakage and an accurate
measurement cannot be obtained.
A branch canal will also cause electrical leakage.
Re-treatment of a root filled with gutta-percha
The gutta percha must be completely removed to eliminate its
insulating effect. After removing the gutta percha, pass a small file all
the way through the apical foramen and then put a little saline in the
canal but do not let it overflow the canal opening.
Build-up
Clean
Gutta-Percha
Fracture
Branch

Operation 2018-03-22
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Crown or metal prosthesis touching gingival tissue
Accurate measurement cannot be obtained if the file touches a
metal prosthesis that is touching gingival tissue. In this case,
widen the opening at the top of the crown so that the file will not
touch the metal prosthesis before taking a measurement.
Cutting debris on tooth
Pulp inside canal
Thoroughly remove all cutting debris on the tooth.
Thoroughly remove all the pulp inside the canal; otherwise an
accurate measurement cannot be made.
Caries touching the gums
In this case, electrical leakage through the caries infected area to
the gums will made it impossible to make an accurate
measurement.
Blocked Canal
The meter will not move if the canal is blocked.
Open the canal all the way to the apical constriction to measure
it.
Extremely dry canal
If the canal is extremely dry, the meter may not move until it is
quite close to the apex. In this case, try moistening the canal
with oxydol or saline.
Blocked
Too Dry
Crown
Debris
Pulp
Caries
touches
gums

Page15
Operation 2018-03-22
EMR and Radiography
Sometimes the EMR and the X-ray image will not correspond. This does not mean that the Canal
Measurement Module is not working properly or that the X-ray exposure is a failure.
* Not infrequently, the actual apical foramen and anatomical apex do not correspond exactly. The actual
apical foramen may be located up towards the crown. In these cases, the X-ray image will seem to
indicate that the file has not reached the apex.
* Depending on the angle of penetration of the X-ray beam, the apex may not appear correctly,
and the position of the apical foramen may appear to be located differently than it actually is.
X-ray Film
Apical foramen is located up
towards the crown.
X-ray Tube

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Page16
6. After Using the Unit
1. Turn the unit off.
* The unit will automatically turn off after 10 minutes of non-use.
2. Disconnect the probe cord from the unit and remove the file holder and contrary electrode from the probe
cord.
Do not pull directly on the cords when connecting or
disconnecting the probe and file holder. Always grip the
connectors to connect and disconnect cords.
Do not wrap the probe cord around the body of the unit.
Replacing Batteries
Replace the batteries as soon as the battery power indicator starts
flashing.
* To be on the safe side, replace the batteries when the battery
power indicator displays two lines.
Do not use the unit if the battery power display is flashing.
The unit may not function properly if the battery power is
low.
1. Hold the cover and slide the catch on the bottom of the
module towards the display to release it.
2. Slide the cover in the direction indicated by the arrow in the
diagram to take it off.
Catch
Cover
Canal Measurement Module
1
Cover
2
Cord
BAD
BAD