GEOSOFT DENT EndoEst-Apex 02 User manual

«GEOSOFT DENT»
USER’S GUIDE
APEX-LOCATOR
«ENDOEST-APEX 02»

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Congratulations!
! On buying the device, be sure to check the delivery set, presence
and correctness of the Quality Warranty Card filling, the acceptance
certificate and product selling marks.
! Please, thoroughly read the user’s guide before using the device.
Keep the User’s guide for future use.
! Please, address to the manufacturer if you have some questions
when using the device.
Hotline: [phone] (extension 170),
E-mail: hotline @ geosoft.ru
CJSC GEOSOFT DENT
(Russia)

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CONTENTS
1. General information..........................................………………...
2. Delivery set..................................……………...……………….
3. Accessories…………………………..…………………………
4. Specifications…………………... .....................………………..
5. The device outward appearance.......................…………...……
6. The fundamental operating instructions of the apex-locator …..
7. Make ready and using………….....................................……….
8. The device sterilization and disinfection……………………….
9. Maintenance………………..…………………………………..
10. Troubleshooting………………………………………………
11. Storage conditions, transportation and use…………...……...
12. Information on utilization…………………………………….
13. Information on certification …………………………………..
14. Warranty ........................……………………………………...
15. Symbol descriptions…………….……………………………..
Appendix
Electromagnetic Emissions and Immunity………………………..
4
6
8
9
10
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1. GENERAL INFORMATION
1.1. The device designation:
The device EndoEst-Apex 02 is designed for root canal apical
constriction localization at the time of endodontic treatment.
Two modifications of the device are available in the production range
as in the below table 1
Table 1.
The device is locate the apical constriction by complex electrical
resistance measuring between two electrodes. One of the electrodes is
a metal hook (lip clip), placed on patient’s lip and the other electrode
(file clip) is connected to the metallic part of the endodontic file,
placed into the tooth root canal.
1.2. Field of application:
The device is designed for use in dentistry (endodontics) and can be
used only in hospitals by medical specialists licensed to practice
dentistry. The manufacturer is not responsible for the device misuse.
1.3. Contraindications:
!Do not use the device on patients with pacemakers.
The device’s modifications Correction of the display readings
depending on the irrigate type
EndoEst-Apex 02 No
EndoEst-Apex 02 (С) Yes

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1.4. Safety measures and warnings:
! Use the device only with the “Geosoft Dent” authentic accessories
(see part 3. “Accessories”).
!Do not dismount and do not change the device construction anyhow.
In the case of the device integrity damage warranty is considered
to be invalid. The device power source should be changed by
authorized service departments only.
!Avoid any liquid ingress into the device case.
!Do not use the device close to inflammables. The device is not
operational in the presence of inflammable anesthetic mixtures with
air, oxygen or nitrogen oxides.
!Use only sterile and disinfected device components. The device
should be sterilized and disinfected directly before the first device use
and also after each patient in order to avoid cross infection (for more
details see part 8“The device sterilization and disinfection”).
!Use cofferdam when working in patient’s oral cavity.
! Do not damage the cable “Signal line”. To avoid cable rupture at the
time of use, disconnect the cable from the control unit, keeping only
the isolating part of the cable plug. Don’t pull out the cable from the
control unit in any case.
!In some cases the apex-locator indications may be not enough
accurate and reliable (see part 6 “The fundamental operating
instructions of the apex-locator”). Before the electronic apex-locator
use, it is recommended to make an X-ray and base on the information
from both methods.

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! The device requires special safety precautions with regard to
electromagnetic compatibility (EMC), and the EMC information
contained in this manual must be strictly adhered to during installation
and operation. It is especially important not to use the device near
fluorescent lamps, radio transmitters or remote controls, portable or
mobile radio frequency communications equipment.
! The device malfunction is possible when using it in the area of
strong electromagnetic interference (EMC). Don’t use the device close
to electromagnetic waves emitting equipment. Malfunctions may take
place close to the equipment marked with symbol.
! Do not use this device in conjunction with other equipment, or as
part of other equipment.
!The device normally operates at temperatures 10-35°С, relative air
humidity not more than 80%, atmosphere pressure (101±3) kPa. Any
violation of the pointed restrictions may lead to the device failure.
1.5. Side effects:
Not found out.
2. DELIVERY SET
The device delivery set is represented in figure 1
1- Control unit (1 pc);
2- Cable «Signal Line» (USB (B) -plug) (1 pc);
3- File clip «Probe Princh» (1 pc);
4- Lip clip «Oral Hook» (1 pc);

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Figure 1. Delivery set
2
4
3
1
5
6 7
5- Cable USB (A)-USB (B) for the battery charging (1 pc);
6 - Charger (USB-socket) (1 pc);
7 - Tester apex-locator (1 pc);
- User’s guide (1 pc)

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! Accessories are in the device set of delivery and can be also shipped loose at
extra cost if necessary.
3. ACCESSORIES
1. File clip “Probe Princh” (3 pcs/1 pc)
GЕ99.047.000 / GЕ99.121.000
File clip for working file. It is used as a
clutch of the active electrode (file) during apex
location.
2. Lip clip “Oral Hook” (3 pcs/1 pc)
GЕ99.062.000 / GЕ99.123.000
It is used as passive electrode during apex location.
It is fixed on patient’s lip.
3. Cable «Signal Line» (USBВ-plug)
GЕ99.169.000
Connecting cable. Plug- USBB.

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4. SPECIFICATIONS
Electrical and maintenance device specifications answer the requirements of:
EN 60601-1:2006, EN 80601-2-60:2012, EN 60601-1-2:2007
 Protection from electric shock : Device is of Class II (including the
Mains Charger). Device has integrated a power source element.
Applied part BF type
 Protection from dust and moisture : (level) IP41;
 The device life time - 5 years
4.1. Control unit «EndoEst-Apex 02»:
 Power source……………………....Li-Ро battery (3,7V; 700 mAh)
 Monochrome LCD display ……………………………..66*66 mm
 Measurement range ……………………………….....from 3,0 to 0,0
 Effective max. current value …………………...…………….9 mcA
 Accuracy of measurement (in the range from 1.0 to 0.0) ……. ± 0,1
 Time of the device operation in the “sleep” mode until the device
automatic power switch off ………………………...……40±1 min
 The device operation time with a new fully charged battery without
recharging ……………………………………….. not less than 10h
 The device battery full charge period ……………….……2,5±0,5 h
 The battery life cycle …………….…...not less 300 recharge cycles
 Overall dimensions …….………………………......126*85*75 mm
 Weight….…………………….…………………………...270±50 g
4.2. Charger:
 Input voltage …………………………..…...(100-240) V, ~50/60Hz
 Output voltage ……………………………………………….5V; 1А

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5. THE DEVICE OUTWARD APPEARANCE
Outward appearance of the device “EndoEst-Apex 02” is represented
in the figure 2.
where: 1- case;
2- LCD display (see fig. 3);
3- three-color LED indicator «STATUS»;
4- button «POWER / SOUND» : the device switch on/off,
adjustment the volume level of the sound signal (only in the modification
EndoEst-Apex 02);
2
1 3
6*
5*
4
11
7
8
9
10
11
Figure 2

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5* - touch button «SOUND» : adjustment the volume level of the
sound signal (only in the modification EndoEst-Apex 02 (C));
6* - touch button «IRRIGANT» : the choice of irrigation solution
(only in the modification EndoEst-Apex 02 (C));
7- socket «APEX / CHARGE»: USB (B) -socket for connecting the
cable “Signal Line”, cable USB (A)-USB (B) for the battery charging
or tester apex-locator;
8- indicator of battery charge;
9- button «RESET»; 10 - information label;
11 - special groove with the rubber sleeve for placement and
fixing of a working cable.
* the modification EndoEst-Apex 02 presents no buttons
Fig 3. LCD display
1- numerical measurement readings of distance to the apex;
2- graphic scale of distance to the apex;
3,4,5 - irrigating solution indicator: «SODIUM HYPOCHLORITE»,
«EDTA» or «CHLORHEXIDINE» correspondingly (only in the
modification EndoEst-Apex 02 (C));
6- charging indicator "Battery";
7- beep indicator "Sound";
8 - indicator of measuring circuit breakage "Attention."
8
1
3
4
7
5
6
2

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6. THE FUNDAMENTAL OPERATING
INSTRUCTIONS OF THE APEX-LOCATOR
For more accurate apex-locator measurement results, please,
follow these rules:
1. Carefully isolate the studied tooth and working file from saliva.
We recommend to use cofferdam, cotton swabs, saliva ejectors;
2. Work only in rubber gloves;
3. Use the file, corresponding to the root canal width in the apical area
(usually ISO 10-20);
4. Do not use unclean or oxygenized files;
5. Use electroconductive gel for root canals (e.g. RC-Prep, Сanal +)
(recommended);
6. Prevent any contact of an instrument with metals in oral cavity
(amalgam restorations, crowns, brackets etc.);
7. Do not touch the working file metallic parts and patient’s mucosa
with wet hands;
8. Provide wet contact of lip clip electrode with cavity.
Attention!!! There is a possibility of measurements accuracy fall-off
in the following cases:
1. Root canal with large apical constriction 
Root canal that has exceptionally
large apical constriction due to a
lesion or incomplete development
cannot be accurately measured; the
measurement results will be less than
the actual length.
Fig.4

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2. Root canal with blood, saliva or a chemical solution overflowing
from the opening
If blood, saliva, or a chemical
solution overflows from the opening
of the root canal and contacts gums,
this will result in electrical leakage
and an accurate measurement can
not 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.
3. 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.
4. 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.
Fig.5
Fig.6
Fig.7

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5. Retreatment of a root canal, 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 apical constriction and then
put a little saline in the canal, but do
not let it overflow the canal opening.
6. 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.
7. 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 obtained.
Fig.8
Fig.9
Fig.10

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8. Caries contacts with gum
In this case, electrical leakage
through the caries infected area to
the gums will make it impossible to
obtain an accurate measurement.
9. 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.
10. Extremely dry canal
If the canal is extremely dry, the
meter will not move until it is quite
close to the apex. In this case, try to
moisten a canal with saline.
Fig.11
Fig.12
Fig.13

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7. MAKE READY AND USING
After the device transportation at temperature below +5 С, you
should let it warm up for an hour at room temperature before
switching it on.
7.1. Battery charging
Chargeable Li-Po battery is the “EndoEst-Apex 02” source power.
Before the first device use it is necessary to fully charge the battery.
One may charge the battery from the mains (110-240)V or from the
PC USB-port.
The battery should be charged in the following way:
- Connect the cable for battery charging (5-fig.1) to the device
“EndoEst-Apeex 02”. Insert the USB (B) cable plug to the «APEX/
CHARGE” socket (7-fig.2) on the device.
Variant 1. Charging from the mains:
- Connect the open plug of the
cable for the battery charging to
the USB socket of the charger (6-
fig.1) - see fig.14 and insert the
charger into the standard mains
supply socket (110-240)V.
Variant 2. Charging from the USB-port:
Fig.14

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- Connect the open plug of the cable for the battery charging to the PC
USB-port .
Red light (8-fig.2) indicates that battery is being charged. When the
battery is fully charged, indicator changes to yellow-green.
Note: Standard time for the battery charging is about 2,5 hours,
however, it depends on the battery current charge, level of its wear,
temperature.
Operation and charge time of the old battery is shorter than of a new
one. In the case of meaningful reduction of the device operation
duration you should address to the service department to replace the
old battery for a new one.
- Remove the charger plug from the mains socket and disconnect the
cable from the device and PC when the device is charged.
7.2. Indication of the battery current charge level
The device has special 5-level indicator “Battery” (6-fig.3) to show
the battery charge level. Number of the indicator colored segments is
directly proportional to the current level of battery charge (see fig. 15).
When the battery charge is lower than minimally allowable level
(<20%), you should recharge it (see p.7.1).
Fig.15

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Otherwise, when the battery charge falls to the critic level (<10%), the
indicator starts blinking and in some time the device switches off
automatically.
You will see indicator “Battery is discharged” on the display when
trying to switch on the device again.
Attention! When discharged, charge the device power supply in time .
Prevent the battery full discharge.
7.3. Switching on of the device
- Switch on the device by short pressing the button
«POWER» (4– fig.2).
Immediately the display reflects the indication
presented in figure 16.
7.4. Checking of apex-locator
- Switch on the device (see. p.7.3)
- Connect the tester apex-locator (7-fig. 1) to the control unit, for
which insert the tester into the socket “APEX / CHARGE”, located on
the rear side of the device (7-fig. 2), until it stops.
In this case, the display should show indication,
presented in figure 17, accompanied with an
intermittent sound signal.
If the readings on the display are out of range from
0.5 ± 0.2, the device is not suitable for use .
Fig.16
Fig.17

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To eliminate the cause of the fault, contact customer service center.
- Disconnect the tester apex-locator from the device.
Note: Perform apex-locator validation before the first use of the
device, as well as at any time in the event you doubt the accuracy of
its readings.
7.5. Connecting the cable and electrodes
- Connect the cable “Signal Line” (2-fig.1) to the device “EndoEst-
Apex 02”. Insert the USB (B) cable plug to the «APEX/CHARGE”
socket (7-fig.2) on the device.
Note: For ensuring the
maximum usability of the device
in the process, as well as to
prevent breakage of the working
cable it is possible to output a
working cable on the front side of
the device.
For the output cable on the front
side of the device will place a
wire working cable in the rubber
sleeve on the bottom of the device
(fig.18).
- Connect the electrodes to the cable sockets.
Connect the active electrode ((file clip (3 - fig.1) to the socket with the
Fig.18
cable
rubber
sleeve

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short wire, the passive electrode (lip
clip) (4-fig.1) - to the long wire.
Attention! Be sure to sterilize the
electrodes before using it before each
patient (see part 8“The device
sterilization and disinfection”).
Note: To disconnect the cable or the file clip from the device case,
take the insulating part of the necessary component plug and pull with
a small effort.
Attention! Do not disconnect the cable or the file clip holding their
wires to avoid break. Avoid wires kinking.
7.6. Checking of circuit continuity of the device
- Switch on the device (see. p.7.3) 
- Close the device measuring circuit "control unit- cable - probe – lip
clip", for which connect the probe and lip clip together.
In this case, the display should show indication,
presented in Figure 20, accompanied with a
continuous sound signal.
Tug on the cable. If there is no indication on the
display, readings are unstable and/or the signal
indicator “Attention” ( ) is burning, then the
continuity is broken, and the device is not suitable
for use.
Fig.19
Fig.20