BEYES Accurator A2 User manual

Apex Locator
Instruction for Use

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Table of Contents
1. Product Introduction ............................................................................ 3
2. Warnings and Precautions .................................................................. 6
3. Installation .......................................................................................... 7
4. Device Operation................................................................................. 8
5. Dental Operation with Device (for reference) ...................................... 12
6. Trouble Shooting ................................................................................. 17
7. Cleaning, Disinfection and Sterilization ............................................... 21
8. Maintenance ....................................................................................... 27
9. Environmental Protection .................................................................... 28
10. Symbol Instruction............................................................................. 28
11. Statement .......................................................................................... 29
12. Beyes Limited Warranty Statement................................................... 29
13. Technical Specication...................................................................... 31
14. EMC-Declaration of Conformity......................................................... 32

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1. Product Introduction
1.1 Foreword
Beyes Dental Canada Inc. is a dental equipment manufacturer involved in researching,
developing and producing dental equipment with a wholesome quality assurance system.
Beyes products includes dental handpieces, ultrasonic scalers, curing lights, apex locators,
endodontic motors and much more.
1.2 Features
• Advance multiple frequency network impedance measurement technology
• Auto calibration
• Clear LCD display
• Rechargeable battery
1.3 Intended use
Apex locator is a supporting device for endodontic treatments. Through determining the
position of apical constriction and the length of the root canal space, will help dentists
complete endodontic treatments.
This equipment applies to the measurements below:
• Measurement of pulpitis, pulp necrosis, periapical periodontitis and tooth length.
• Measurement of the tooth length before restoration of post crown.
• Measurement of the tooth length of transplantation and retransplantation.
This device must only be operated by qualied and licensed dental professionals.
1.4 Contraindication
• Patient or doctor with a pacemaker
• Patient with hemophilia
• Patient with heart disease
• Pregnant women or young

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Measuring wire
Battery Adapter Tester
File clip Lip hook Touch probe
1.5 Package includes

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Diagram of components and control buttons

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2. Warnings and Precautions
Warnings
• First read this instruction manual before beginning to operate this device
• This device should only be operated by qualied and licensed dental professionals
• Do not directly or indirectly place this device near heat source.
• Operate and store this device in reliable environment.
• This device requires special precautions regarding electromagnetic compatibility (EMC) and
must be in strict accordance with the EMC information for installation and use. Do not use this
equipment especially in the vicinity of uorescent lamps, radio transmitting devices, remote
control devices, handheld and mobile high- frequency communication devices.
• Do not make any changes to the device. Any changes may violate safety regulations, causing
harm to the patient
• Use original power adapter for charging the device
• Do not charge and operate the device at the same time. The device should be operated with
battery only. Detach adapter from the device for operation.
• Remove battery from device for long term storage
• The device cannot be autoclaved. Use disinfectant of neutral pH value or ethyl alcohol to wipe
its surface.
• Follow instruction in this manual to replace battery and only replace with original lithium battery.
Precautions
• Avoid any contact of the le or lip clip with metals. Be particularly careful with patients tted
• with metallic crowns, bridges or large metallic llings. Contact with metal can impair the
measurements.
• High concentrations of sodium hypochlorite may result in a lower accuracy of the
measurements. It is recommended to use sodium hypochlorite solution at maximum 3%
concentration.
• Make sure that the canal is wet enough to ensure reliability of the measurement. But avoid
excessive liquids inside the tooth cavity to prevent overow and incorrect measurements.
• Apex locator may not be able to provide correct measurements in all conditions. In any case, it
is recommended to take an X-Ray prior to device use and to compare the results obtained by
both methods.

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3. Installation
3.1 Battery
This device has built-in lithium battery.
1. Plug in power adapter
2. Connect power adapter to the device
3. Device will show a black screen with a battery icon and moving bars
4. When the device is fully charged, the screen will display battery icon with full bars
Warning: Do not use device on patient while charging
3.2 Lip hook and le clip
The measuring wire has a plug at one end and two jacks on the other end.
• Plug in the measuring wire to the device
• Plug in the lip hook to the white jack
• Plug in the le clip to the gray jack
Note:
When the device is connected to an endo motor, the le clip is not needed.
To remove lip hook or le clip, hold the jack and pull apart. Do not pull the wires.

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3.3 Connect to endo motor (Optional)
Accurator A2 can be connected to Beyes ApexPilot G2. During operation, as the le at G2
reaches canal nerve, A2 alarm will be activated and G2 will stop or reverse motor according
to its setting. This feature will help dentist to perform more accurate procedures.
Plug in the connecting wire from ApexPilot G2. The screen on A2 will show icon connecting
the endo motor. For detail setting and functions, refer to ApexPilot G2 manual (Apex Locator
section)
4. Device Operation
4.1 Turn on and off
Press power button to turn on/off device
Note: Device will shut down after 5 min of idling
4.2 Adjust volume
Press the sound adjustment to adjust the volume
After reaching the highest sound level, continuing to press the sound adjustment button will
start back at lowest (mute) sound level.

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4.3 Test connection
Warning
Always test before doing operation
Install lip hook and le clip. See installation.
Touch the lip hook and the clip.
The display screen shows a bar ranging from all white and advances to blue, orange, and
then red.
Icon at the top shows the hook and clip are touching
If the hook and clip are touching, there will be continuous beeping from the device
4.4 Set Apical Stop
Press lower part of the long button to move the pointer to the position of the between 0.0 and
1.0.

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During operation when the le reaches the Apical Stop, the device will beep continually.
Note:
If ApexPilot G2 is connected with this device, the endo motor will respond according to
dened action.
4.5 Operating screen
When the le reaches inside the canal, the display
screen shows the tooth and the le extending to the
bottom.
White zone
When the le reaches near the bottom, the enlarged
display of apical foramen starts to light up the white
bar and the device will start beeping.
Blue and orange zone
As the le goes further down, the bar advances to
blue and orange color with faster beeping.
Position 0.0
The location of anatomical apical foramen
“APEX”
Orange zone indicates when the le reaches the
apical foramen

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“OVER”
Red Zone indicates when the le has exceeded the
apical foramen
Warning
The scale of reading does not indicate the actual distance. It indicates how close or far away
the le is from the apical foramen.
It is recommended to check the position with an x-ray.
Note:
• The recommended working length is between 0.5 and 1.0 mm (blue zone). But it varies
across different teeth. Dentist should make professional judgement during operation.
• Use the right le size for the root canal diameter. If le size selected is too small for the
canal, this may affect accuracy of the reading.
• Keep the access cavity dry. Excessive liquid will affect the accuracy of the reading.

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5. Dental Operation with Device (for reference)
5.1 Requirements
Warning:
This device should be operated by a qualied and licensed dental professional.
Read this manual before operation
• A fully exposed access cavity to show the pulpal cabin.
• An X-ray photo to show the whole length and root canal of the teeth.
• The endo le should not be too big nor too small to avoid cutting through the apical foramen.
• Mark an anatomized symbol on the diseased tooth and memorize it on the case history.
This symbol should be marked on the health bridge or on the tooth lled integrated. The
position of the mark should be on the incisal edge of the anterior tooth or on the spire of the
molars. For those bridge that's broken obviously, this symbol should be on the tooth surface
supported by the dentin instead of on the suspended enamel.
• The acute inammation surrounding the apex has been gone and the infected material has
been cleaned. It is also necessary to get rid of the pulp and necrosis tissue.
5.2 Cases not suited for normal measurement
Case 1
The size of the root is similar to the size of
apical foramen.
In this case, the measurement result of the
length of the root canal will be shorter than its
real length because of the hypoplasia of the root.

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Case 2
Bleeding or blood overows from the apical foramen.
In this case, the blood will overow from the root canal
and reaches gingival. The blood and the gingival will
be on a conducting state which will cause an inaccurate
result while measuring. The measurement can be continued
when the bleeding stops。
Case 3
The tooth crown is broken.
The tissue of the gingival may reach the cavity of the endo hole at the broken point which
will cause inaccuracy because of the electronic conduction. The measurement can be
continued when the crown is xed by gypsum or other insulators
Case 4
There is a crack on the tooth root
In this case, the crack may cause electric leakage which
will affect the accuracy of measurement
Case 5
A retreatment to a root canal which was lled with
gutta-percha. Clean the remaining material in the root
canal and ll it with little normal saline before a measurement

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Case 6
There is a metal crown which has connected to the gingival.
It will cause inaccuracy when the endo le
touches metal crown
Case 7
Sometimes, the results of the Apex Locator may not match
the X-ray reading. This does not necessarily mean that the
machine is not normal or that the photo was taken incorrectly.
The actual position of the apical foramen is different from the
anatomical one. It is very common that the apical foramen is
slightly to the side of the root canal crowns. In this case,
according to the shooting angle, it may create an illusion that
the front tip of the root canal haven’t reached the canal tip.
(Due to the limiting angles of X-rays, sometimes the photo
taken may not show the accurate position of the apical foramen.)

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5.3 Instruction
1. Connect the measuring wire to the device
2. Plug in lip hook and le clip
3. Adjust the volume
4. Test connection by touching the lip hook and the le clip
5. Hang the lip hook on the lip, make sure it makes contact with the oral mucosa as a
reference electrode
6. Clip the le with le clip, approach to the apex, then there will be continuous alarm when
the distance is less than 2mm
Note:
1. Clip the upper metal part of le. Clipping the blade or moving part wears the resin of the le

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2. Use resin needle when measuring the length of root canal and wear gloves to prevent
leakage which causes inaccurate measurement.
3. Do not use worn le clip
4. Clip the le perpendicular as shown
5. When the le reaches the apex, adjust the rubber piece set on the endo le to the reference
point (incisal edge or fossa edge), then pull out the endo le, measure the length between
the top of the le and the rubber piece, and this is the working length of the tooth. It also can
be used with the touch probe instead of le clip, when it is inconvenient to measure the back
teeth
6. Autoclave the lip hook, le clip or touch probe after use
7. Clean the device and measuring wire with 75% alcohol

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6. Trouble Shooting
Problems Possible causes Solutions
No power and no signal on
the screen after pressing
power on
1. The battery is placed
incorrectly
2. The battery has been
depleted
1. Re-install the battery.
2. Recharge the battery.
The length of the root canal
cannot be measured.
1. The connection of the
measuring wire is loose
2. The measuring wire is
broken
Conrm the measuring wire is
plugged rmly, link the lip hook
with the le clip to check if the
measuring wire is broken.
No sound of alarm. Volume is set at “mute” Adjust the sound level.
The charging LED indicator
goes out.
1.The adapter is not
connected properly
2. A faulty adapter with
excessive output is being
used.
3. The battery is not
installed well.
4. The battery has been
damaged.
Reconnect the adapter.
2.Change the adapter. Only
the original adapter should be
used.
3.Reinsert the battery and
then reconnect the adapter.
4.Change the battery and then
reconnect the adapter.

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Problems Possible causes Solutions
Display not
steady while
measuring: the
measurement
result is
rather longer
or shorter;
numerical
display irregular.
The length of
the root canal
cannot be
measured.
No sound of
alarm.
The charging
LED indicator
goes out.
The connection between the lip
hook and the oral mucosa is not
making contact
Make sure the lip hook has
contacted the oral mucosa at a
good position.
Blood/saliva is
Overowing or glued to the crown
Blood, liquid overow from the
root canal, glued to the crown or
the tooth neck, will cause short
circuit then cause the abnormal
phenomena. Clean the blood and
the liquid.
The root canal is lled with
blood or other liquid
Once the endo needle contact the
surface of the root canal which
is lled with blood, liquid, it will
display “OVER” immediately. In
this case, push the needle to the
apical root canal, then the display
will be normal, you can measure
the length of the root canal
correctly.
1. The adapter is not connected
well.
2. A faulty adapter with excessive
output is being used output.
3.The battery is not installed well.
4.The battery has been damaged.
1.Reconnect the adapter.
2.Change the adapter, must use
the original adapter.
3.Reinsert the battery and then
reconnect the adapter.
4.Change the battery and then
reconnect the adapter.
There is liquid or scrap on the
tooth surface
Clean the tooth surface.
The endo needle is coming into
contact with the gums
The LCD will display “OVER” if the
endo needle contact the gums.

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Problems Possible causes Solutions
Display not
steady while
measuring: the
measurement
result is
rather longer
or shorter;
numerical
display irregular.
There is still pulp in the root canal If there is much pulp left in the root
canal, the root canal length can’t
be measured correctly.
Needle touched the metal repaired
material
Once the needle touched the
metal repaired material, current
measurement from the gums to the
periodontal tissue loss, the screen
will display “OVER”.
Adjacent surface has caries Current measurement ow from
caries of the adjacent surface to
gums, then the root canal length
can’t be measured correctly.
There is collateral or the tooth root
is broken
Once the needle reached the
collateral or the broken part of the
tooth root, current
measurement will overow from
periodontal ligament, it displays
“OVER”.
Is it because in addition to the top
pulp chamber, low tooth crown?
Or there are residues left?
Use rubber dam to prevent the
current ow to gums.

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Problems Possible causes Solutions
Display not
steady while
measuring: the
measurement
result is
rather longer
or shorter;
numerical
display irregular.
There are apical cysts If there has cysts, the length of
root canal can’t be measured
accurately.
The le clip is not
clean or broken
Clean the le clip by alcohol, or
replace it.
The measuring wire is broken or
has poor contact
Contact both ends of the
measuring wire directly, it displays
“-3”.
The length
measurement
indicator only
full display near
narrow part of
the apical.
The root canal is occlusive The display will be normal after
penetrating the narrow part of
apical.
The root canal is too dry Wet the root canal with normal
saline solution or sodium
hypochlorite solution.
The endo le is too small for the
root canal
Replace the current endo le
with a larger one.
* If all above measures do not work, please contact us.