Morita ROOT ZX RCM-1 User manual

yu"
MORITA
ce
Fully automatic root canal length measuring devt
KOO! ZXe
Operation Instructions
USP. 5096419
USP. 5211556
USP. 5295833
DBP. PAT. 4126753
DBP. PAT. 4139424
DBP. PAT. 4232487
JAPAN PAT. 2873722
JAPAN PAT. 2873725
JAPAN UM. 2097127
JAPAN DS. 886542
Manufactured by JMORITA MFG. CORP

WARNING h lectric scalpel or on pati
A oa acti j ectri atie
Do
not
use
this
unit
in
conjunction
with
an
e
patients who hay,
pacemaker.
4
to
the
Root
2X
.
f
any devices
to
the
Koo
which
h
rconnection Or attachment oO ave not
e
a ane
d
or
authorized
for
patient
use
by
United States Food and Drug Administration
A
regulations may cause
the
Root
ZX
to
function improperly
or
imprecisely and
A)
compromise patient safety. J. Morita will not be responsible for any injuries caused by the
Se
of such unapproved or unauthorized devices, and the use of such devices shajj void th
@
ATTENTION
.
_ will not be responsible for accidents, equi
The
J.
Morita Mfg Corp. wil
Pp
,
equipment damage,
injury resulting from repairs made by personnel not authorized by the J. Morita Mig. Corp. bodily
rita
Mfg. Corp.
will
not
be
responsible
for
accidents, equipment damage,
or
‘ y
The J. Mo png:
y changes, modifications, or alterations of its products.
injury resulting from an
Mfg. Corp.
will
not
be
responsible
for
accidents, equipment damage,
or
bodil
from the use of products or equipment made by other manufacturers, except
those procured by the J. Morita Mfg. Corp. or
The J. Morita Mfg. Corp. will not be responsible for accidents, equipment damage, or bodily
injury resulting from maintenance or repairs USING Pa. GI wor other than tiiose
specified by the J. Morita Mfg. Corp. and in their originai co. dition.
The
J.
Morita Mfg. Corp.
will
not
be
responsible
for
accidents, equipment damage,
or
bodily
injury resulting from operating
the
equipment
in
ways other than
the
operating procedures
described
in
this
manual
or
resulting from
not
following
the
cautionary remarks
and
warnings
in
this manual.
The
J.
Morita Mfg. Corp.
will
not
be
responsible
for
accidents, equipment damage,
or
bodily
injury resulting from workplace conditions and environment or installation conditions such as
proper electrical power which
do
not
conform
to
those stated
in
this
manual.
The
J.
Morita Meg
will
not
be
responsible
for
accidents, equipment damage,
or
bodily
injury resulting =, earthquakes, floods, lightening, natural disasters, or acts of God.
The
J.
Morita
injury resulting
-
.
ase
oe.
. ‘ivtice EEKS
— i
Wa i |
an thoroughly before autoclaving; malfunctions and discoloration can result
icals
and
foreign debris
are
not
completely removed.
*
Itis
hi
.
recommended that instruments be autoclaved in a oouch or similar
*% Resin .
subject to discoloration and sha:.2 dis. by
uld
always
be
autoclav
i
used with chemical solutions,
oils
etc.
ed
separately from instrument.
x
are
%
Autoclave
and
drying temperatures must
not
exceed 135°C.

Thank
you
Tor
purchasing
the
Root
2X,
a
Tully “ before using
device. For optimum performance and safety, read this manua reference
the unit. Keep this manual in a readily accessible place for quick an
N.
THIS MANUAL CONTAINS ESSENTIAL SAFETY INFORMATIO
CONTENTS
Page
1
1.
Features
>
2.
Parts Identification
3.
Specifications
3
5.
Disinfection
&
Sterilization
3
6. Cautionary Remarks :
7. General Explanations :
1
)
Reading the
EE
2) Audible Alarm 7
3) Batteries ..
B.
Operation
7
10. Advanced Trouble - Shooting eee nea naa Seg Oe 41
11. Replacement Parts List 12
12. Warranty Es see eee eae eee 12
13.
ROOT
ZX
Check LEST cece
ce
13
1. Features
@
The Root
ZX
requires
no
adjustments
or
calibrations
and
can
be
used whether
the
canal is dry or filled with strong electrolytes such as blood, hypochlorite, saline
etc. The thickness of the file has almost no effect on the measurement.
@
Since
the
position
of
the
file
tip
and
the
meter reading
are
directly related, root
canal enlargement can easily be performed while continuously monitoring the
length of the canal electrically.
@
The meter
is
an
easy-to-read liquid crystal display.
@ The position of the file tip is easily determined by the changes in the
audible signals.
@ The unit is powered by commonly available “AA” batteries. ( Manganese
batteries can also be used. ) Low power consumption enhances long battery life.
@ The file holder and contrary electrode may be autoclaved.

2.
Parts Identification
Main Switch
Battery
Power Indicator
Alarm Sound
Type
Indicator
Image of Root Canal
Apical Constriction Indicator Bar
Replace Batteries
Indicator
Accessories
,
(
“DA”
)
3.
Specifications
Name Root
ZX
Model RCM-1
Rating
D.C.
7.5
V(
five
1.5
volt
“AA” alkali batteries
)
Power consumption
0.3
W
(maximum
)
Measurement Voltage
A.C.
80
mV
(maximum
)
10
“A
(maximum
)
Measurement Amperes
Displays
and
Indicators Reflection, Color Liquid Crystal Display
Piezoelectric Beeper
Outer dimensions W96 x D80 x H105mm
Weight Approx. 550g

Fe
se
www
tral
detergent
to
wipe
off
the
~~
Main Unit : Use a soft cloth with a little neu
h water.
enclosure. Rinse
the
soap
off
with
a
damp
clot
[ CAUTION ]
Do not use surface disinfectants like G
leave a residue on the main enclosure an
of these chemicals on the Root ZX wipe them 0
der free of debris and chemicals.
h
moistened
wit
These chemicals
will
imilar chemicals.
and
ccidentally
spill
any
and corrosion. If you a
with
cloth.
juteraldhyde, Ethanol,
d cause discoloration
ff immediately
Keep
the
metal
end
of
the
file
hol
5.
Disinfection
&
Sterilization
Wipe
the
probe
with
a
cloth soaked
in
alcohol.
*
The
file
holder
and
contrary electrode
may
be
autoclaved.
(Do not autoclave any other parts. )
File
Holder
Electrode
6.
Cautionary Remarks
Z\ WARNING
©
Do
not
use
this
unit
in
conjunction
with
an
ele
patients who have a pacemaker.
ctric scalpel or on
Remove the back cover to install the 5 Batteries.
For
easy installation,
put
the
negative
(
©
)
end
of
the
battery
in
first. Do not reverse the positions of the negative ( © ) and
positive ( ® ) ends of the battery.
% Replace the batteries when the bar graph of batteries power
indicator gets down to the last two lines. Accurate readings
cannot be obtained with batteries which are low on power.
Never use a mixture of alkali and manganese batteries or of
old
and
new
batteries.
Always remove the batteries when the unit is not in use for long
periods
or
during shipping.
Use
files
and
reamers which have plastic
(
resin
)
handles.
Always attach the file holder to an upper part of the file near the
handle. The metal and plastic parts of the file holder can be
damaged
if
they
are
attached
to
the file’s cutting
part
or
the
transition from round shaft to cutting part.
Handle
Reamer
Cutting Part
* Do not clip
holder her
Make sure the probe plug is securely plugged into its jack. A poor
connection
can
prevent measurement.
Metal Part of File Holder
Probe Plug

Page
4
Clip
the
file
as
shown
in
the
right illustration.
If the file is forced into the position shown in the right
illustration,
it
may
not
make
a
correct measurement
or
the
holder
could
be
damaged.
the cords, when attaching or disconnecting the
probe,
tile
hoider,
or
saliva ejector clip.
Always take
an
x-ray
to
check
the
results.
Cord
Occasionally
the
meter overreacts
as
soon
as
the
file touches
the
inside of the root canal. Please see the enclosed flowchart for an
explanation
of
possible causes
of
such readings
and
their
solutions.

7.
General Explanations
1) Reading the Meter
The position of the file tip is indicated by the meter in the
display. The audible alarm will begin to beep slowly when the
meter reaches
2.
The
bar
indicating
the
apical constriction
of
the
root
canal
flashes on and off.
dicator Bar
Apical Constriction
In
The
meter’s
0.5
reading indicates
that
the
tip
of
the
file
is
in
the
vicinity of the apical foramen an average of 0.2~0.3 mm
past the entrance to the apical constriction towards the apex ).
At this point the picture of the root canal will start flashing and
the
sound
of
the
alarm
will
change.
\f
the
file
reaches
the
major foramen (meter reading
the
alarm
will
change
to
a
single, sustained beep
and
the
word
“APEX” will begin flashing. The small triangle located at the
lower right , which also indicates will also begin flashing.
The position indicated by the 0.5 reading on the meter is the
same
for
virtually
all
teeth. When
the
meter reaches 0.5,
its
sensitivity increases. The difference between meter readings 0.5
and 1.0 is approximately equivalent to 0.2 ~ 0.5mm.
Flashes
:
Meter reads
0.

The monitor indicates when the file has entered the apical
constriction
by
the
flashing image
of
the
root
canal
and
by
the
meter;
the
length
of
the
file inside
the
canal
can
then
be
used
as an estimate of the working length of the canal.
The
position
of
the
bar
indicating
the
apical constriction
of
root
canal can be moved with the screw on the bottom of the unit.
However,
it
is
recommended that this setting
not
be
changed
since when
the
meter reaches
0.5
mm
the
sensitivity
of
the
unit
Apical Constriction Indicator
Bar
(
Always Flashing
)
is
at
its
peak.
The factory setting for the bar is 0.5.
The measurement is not changed by
moving
the
bar.
Turn
Variable Resistor Adjustment
Shaft
'
4
‘ Adjustment Range
Bar
Movement
_
{
8
2)
Audible Alarm
The
volume
of
the
alarm
may
be
adjusted
and
3
types
of
alarm
sounds
may
be
selected. ))) ALARM
e@
Adjust
the
volume
of
the
alarm with
the
screw
on
the
bottom
of
the
unit. Turn
the
screw
in
the
direction 12
3
indicated
by
the
arrow
to
increase
the
volume. (GC)
e
Never
turn
the
sound
all
the
way
off.
« Three types of alarm sounds may be selected with the switch
located on the bottom of the unit. The selected sound
appears in the upper, right part of the display. Alarm Volume Adjustment Screw
Switch Display
In
Apical
Near Apex
P Constriction Passed Apex
Fast Beeping
Fast Beeping
Fast
Beeping
‘when
the
earphone
is
plugged
into
the
PHONE jack,
the
sound
of
the
alarm
is
audible
only
through
the
earphone.
Alarm Type Switch
Continuous
Beep
Slow
Beeping
Single Pitch
Continuous
Beep
Slow
Beeping
Two Pitches
Continuous
Slow Beeping
Three Pitches
Do
not
pull
on
the
cord when disconnecting
the
earphone.

3) Batteries
The
Root
ZX
is
powered
by
5
“AA” alkali batteries
and
will
Operate continuously
for
approximately
100
hours.
(
This
is
the equivalent of 6 to 12 months of normal use.) Manganese
batteries
may
also
be
used,
but
they
will
not
last
as
long
as
alkali ones. Battery Power Bar Graph
as
A
bar
graph
in
the
upper right hand corner
of
the
display
| ay) 3
indicates how much power is left in the batteries. Replace
all
5
batteries when there
are
only
2
lines
left
in
the
bar
graph
and
an
image
of
a
battery appears
in
the
lower left
corner of the display.
8. Operation
1)
Plug
the
probe
into
the
PROBE jack
on
the
main
unit.
Do
not
pull
on
the
cord
when disconnecting
the
probe.
2) Insert the file holder's plug ( gray ) into its connector ( also
gray
)
on
the
probe.
Insert
the
contrary electrode’s
plug
into
its
connector
on
the
probe ( white ) and hook the electrode in the corner of the
mouth.
Corner of Mouth
Contrary Electrode
Probe Connector
File
Holder
Plug
(gray) (gray)

3)
Press
the
main switch
and
turn
the
unit
on.
Check
the
display
and
make
sure
the
apical constriction
bar
is
flashing
*
Attach
the
file
holder
to
the
file
only
after
the
main
Switch has been turned on. ( Accurate measurement is
not possible if the main switch is turned on after the file
holder has been attached to a file already inserted ina
tooth. )
Now insert a file into the tooth.
4) Fasten the file holder onto the metal part of the file in the
5)
tooth.
File
File
Holder
Cutting Part
*&
Do
not
clip
holder here.
Insert
the
file
(in
most
cases
size
10
)
until
the
meter reads
0.5 mm. Then advance the file with slow clockwise turn
until the word “ APEX ” will begin to flash.
When
the
apex
is
reached turn
the
file
with slow
counterclockwise
turn
until
meter reads
0.5
mm
again.
Since
some
canals have multiple constrictions
it
is
essential
that the file be taken to the apex then returned to the
apical constriction
to
insure
that
the
meter
is
registering
the apical constriction. Position the rubber marker on the
of
the
tooth
as
a
reference point
to
determine
the
ranal's working length.
:
Read section
on
Advanced Trouble
-
Shooting
for
using advanced techniques
to
obtain working
length.
Main Switch
Push
On
Push Off
Apical Constriction Indicator Bar
@®
Press
with
thumb
in
direction of arrow.
®@
onto
file.
®
Release.
Rubber Marker
File
Holder

6)
7)
8)
Determine
the
canal’s working length.
lig
actuall
ili ialisa
The working length of the canal used to calculate the length of the fillin mater of the
somewhat shorter; find the length of the canal up to the apical seat the en
indi the 0.5
filling
material)
by
subtracting 0.5~1.0
mm
from
the
workin length indicated
b
reading
on
the
meter.
%&
The
above estimate
of
the
canal length
will
differ somewhat depen
st
as
he
tooth
and
the
shape
of
the
canal.
This
discrepancy must
be
judged
by
the
dentist
a
works
on
the
tooth.
ding
on
the
individual
Press
the
main switch again
to
turn
the
unit
off.
The unit will automatically turn itself off after 20 minutes if you forget to.
The Root ZX can be used for purposes other than length determination.
@
Detect
file
perforation.
In the case of file perforation Root ZX will sound a single sustained beep and word
“APEX” will begin flashing.
@
Detect
post
perforation.
In the case of a post perforation the file holder can be connected to a large size file and
the file should make contact with the post. In the case of a perforation Root ZX will sound
a single sustained beep and the word “APEX" will begin flashing.
Clinical judgment, including knowledge of root anatomy, is important when
interpreting results for this indication.

9. Trouble
Liquid Crystal Display
Display does not appear when main switch
Main Switch
is
turned
on.
ow?
@
Check
that
the
batteries
are
properly
7
installed (esp.
+
and
—
poles).
4
4
The
replace batteries indicator appears
in
the
display.
“
@
Replace
all
5
batteries when
the
image
of
a
battery appears
in
the
lower,
left
corner
of
the
display.
is
Pe
Replace Batteries
f
A)»
Alarm
doesnot
sound.
Indicator
{ a = 7 — AY * The volume adjustment screw may be all the
way off. Adjust the volume.
7 Earphone “ee The earphone may be connected.
i Disconnect it. (The alarm is only audible
\ through the earphone when it is
\ connected. )
X @ The file may not be far enough inside the
\ canal. Try inserting it deeper.
File
Holder
\
\
The
meter
in
the
display does
not
move
or
\
gives
an
erroneous reading.
5 is \ @ Always turn the main switch on before
ee Ss \ connecting the file holder to a file inserted
yy
isk
~
\
CZ ~ ~ \- @ The opposing electrode may not be
connected. Make sure connections are
ow
\
secure.
Contrary Electrode
@
The
probe
plug
may
not
be
pushed
all
the
way into its jack.
@ The plug for the file holder may not be
securely inserted
into
its
probe connectors.
k
it.
~ Check it
aN Wen wo
®
The
plastic part
of
the
file
holder
is
: pile damaged. Replace the file holder.
File
Holder
The
metal
part
of
the
file
holder
may
be
” dirty. Clean it.
-
The
metal
part
of
the
file
holder
may
be
=
as
es
ow
oe
:
:
corroded. Replace
it
with
a
new
one.
%
If
the
above procedures
do
not
solve
the
problem refer
to
Advanced Trouble
-
Shooting

10. Advanced Trouble - Shooting
ecked.
This
section should
be
referred
to
only
if
all
steps
in
the
previous section have been
ch
1) The meter in the display does not move.
®
The
canal
may
be
calcified.
@
The
canal
may
be
obstructed
by
dentin shavings
(
meter will
through apical constriction ).
only react correctly when file passes
@
The
inside
of
canal
may
be
extremely
dry.
Moisten
the
canal.
@ The canal is exiting the root at sharp right angle ( sometimes the canal exits the root at sharp
angles and the file is unable to follow the bend ). In this case a reading of 1.5 to 2.5 might be seen
on
the
display
and
the
operator
will
be
unable
to
insert
the
file
any
further
in
the
canal.
lf
the
file
is
able
to
pass
the
curve
Root
ZX
may
sound
a
single sustained beep
and
the
word
APEX ” will begin flashing ( the meter display will jump to apex ). Retract the file just enough so
the single sustained beep stops and the word “ APEX " Stops flashing (the meter reading will jump
back to 1.5 to 2.5). This is your working length.
@
The
apex
may
be
surrounded
by
a
pustule. Measurement
is
sometimes impossible
in
this
case.
2) The meter overreacts as soon as the file touches the inside of the root canal.
@ When the canal has an especially large foramen and is filled with an electrolytic solution, the meter
often overreacts
as
soon
as
the
file
touches the inside
of
the
root
canal,
but
it
will
automatically
return
to
normal
as
the
file
advances towards
the
apex.
®@ The pulp chamber should be clean and dry.
@\f
the
meter still overreacts
at
the
apex,
dry
some
of
the
electrolytic solution
and
use
a
larger file
that
is
closer
to
the
size
of
the
apex.
vis
still
overreacts there
may
be
too
much
pulp
left
in
the
canal. Sometimes
an
accurate
measurement cannot be made if a large amount of pulp is left in the canal.
@ in cases when the tooth has large amalgam restoration or crown the meter will overreact ( the
meter
may
jump
if
current leaks through
a
metal prosthesis
to
the
gums
or
periodontal tissue
).
In this case keep the chamber dry and use a plastic insulating sleeve to prevent the current from
grounding
out.
The
insulating sleeve
is
a
plastic
or
polyvinyl tube which
does
not allow
the
current
to leak. Slide a 5 - 6 mm piece onto the file and then insert the file in the canal. This will prevent
the current from leaking and will stabilize the meter reading.
3) The meter may give an erroneous reading for the following reasons.
@
Retreatment
of
root
canals
with
silver points.
@
Large lateral canals present.
@
incomplete apex.
If
the
above procedures
do
not
solve
the
problem check
the
operation
by
moistening your
finger with water and placing the file holder and the opposing electrode about 1 cm apart on it. A
consistent meter reading shows that the
unit
is
in
proper working order.
Contact your local dealer or our office listed on the back page of this manual if the above procedures do
not
solve
the
problem.

11.
Replacement Parts List
DESCRIPTION |
[ene [ene
12.
Warranty
One Year Limited Warranty
1. The manufacturer gives a worldwide guarantee for one year beginning from the date of purchase.
Within this period any defect which is due to faulty manufacture or material will be remedied by
repair
or
replacement
at
the
option
of
the
manufacturer
or
its
distributor.
2.
Warrnaty repair
and
service:
In
the
event
of
a
claim under this guarantee, the appliance
is
to
be
sent
to
the
service facility
of
the
distributor with
a
short description
of
the
probelm
and
a
copy
of
the
sales receipt from
the
dealer
as
proof
of
purchase
and
title
to
warra
nty.
3.
In
the
case
of
damage caused
by
wear
and
tear, careless handling
and
repairs
not
carried
out
by
an
authorized sevice facility, the warranty ceases to be valid. this guarantee may not form the basis for
any claims for damages, in particular not for compensation of consequential damages. The buyer
assumes responsibility for damage due to dropping of the unit, improper use and utilization of the
product
and
chemicals other than
those
stated
in
this
instruction manual
for
cleaning.
4.
This
warranty does
not
include
the
external accessories,
file
electrode, batteries
or
tansportation
costs. ‘

13.
ROOT
ZX
Check List
me me a
mmm
ee
Smee
ee
ee
oe
me ee mmm meu,
me
ee
ee
me
em
te
©
Root Canal Length
® The meter’s 0.5 reading is the standard for determining the length of the canal.
© Working Length
° The Working length of the canal can be estimated as being 0.5~1.0 mm shorter than the canal
length indicated by the 0.5 reading.
e oe tip of the file has actually passed slightly beyond the apical constriction when the meter reads
5.
These general standards differ slightly depending on each individual tooth and canal shape; the
dentist should judge each case as he is working on it.
® Take an x-ray to confirm the results.
=
eek
me
we
mm me mm eee
em
Unusual Results or Problems
[—F
Solution
[<F Solution
1
Meter
is
unstable.
Opposing electrode may
not
have
good contact with oral mucosa.
The
file
holder
may
be
dirty.
[<F Position electrode
for
good contact with
oral
mucosa.
[_F Clean off the file holder with disinfecting
alcohol.
To check the Root ZX, moisten your finger
with water
and
place
the
file
holder
and
the
opposing electrode about
1
cm
apart
on it. A consistent meter reading shows
that
the
unit
is
in
proper working order.
Results
are inconsistent when the 2
terminals
are
shorted
out
to
check
the
device's operation.
II
Meter goes off
the
scale right away. (Imprecise, erratic
or
short readings.
)
Is
the
crown
of
the
tooth covered
with an overflow of blood or
chemicals?
Erratic meter behavior may result from
blood, chemical etc. overflowing the canal
onto the crown or neck and making
electrical contact with
the
gums.

Is the canal filled with blood or
electrolytic fluids?
CF
If
the
canal
is
f
chemicals,
the
m
when
the
file
tip
illed
with blood or
eter
sometimes jumps
fluid. tn a breaks the surface of the
return + S Case, meter activity will
© normal as the file approaches
the
apex.
Clean off the surface of the tooth.
CF The meter will jump off scale if the file
touches the gums.
tooth may be covered with
The g debris or chemicals.
cuttin
he
file
may
be
making contact with
The
the gums-
e
too
much
pulp
left
in
Sometimes
an
accurate measurement
cannot be made if a large amount of pulp
is left in the canal.
There
may
P
the canal.
Current
may
be
leaking through
a
ur
metal prosthesis.
The meter may jump if current leaks
through
a
metal prosthesis
to
the
gums
or
periodontal tissue.
be
leaking through
[<> Caries
on
proximal surfaces
can
result
in
faces infected with
current leakage and make accurate
measurement impossible.
Current may
proximal sur
caries.
rey
avate
APEX
at
a
branch
|
due to
The
mete:
canal.
Current leakage
may
be
branches
off
the
main canal.
[C7
This increases the likelihood of electrical
contact between
the
canal
and
the
gums.
Wash the canal with oxydol if the results
are inconsistent.
Current leakage due to crown
lowered
by
removal
of
the
tectorium.
(7 Measurement
is
sometimes impossible
in
this
case.
The apex may be surrounded by a
pustule.
The file f (7 (FP Clean or replace the file holder.
broken.
Il
Meter does
Only when very near the apex.
)
The
canal
m-
Meter will react correctly when file passe
through apical constriction.
The apical foramen may be too
large.
If the apical foramen is too large ¢
incompletely formed, the meter may jum
suddenly when the file tip apprcaches tt
foramen.
|
Moisten
the
canal with oxy:
The
inside
of
the
canal may
be
extremely
dry.

{|} & MORITA MFG. CORP
680 Higashihama Minami-cho, Fushimi-ku, Kyoto, 612-8533 Japan
|}
&
MORITA CORPORATION
Tokyo Office
:
11-15, 2-Chome Ueno, Taito-ku, Tokyo, 110-8513 Japan
Osaka Office
:
33-18, 3-Chome Tarumi-cho, Suita, Osaka,
=
4
865C
MORITA
9 Mason _
irvine, CA 92618 U.S.A.
TEL : [phone] FAX: [phone]
UMORITA
GMBH
Justus-Von-Liebig-Strasse 27A
D-63128 Dietzenbach F.R. GERMANY
TEL : [phone] FAX : [phone]
J MORITA CORPORATION
2991/42 JMTI Plaza Building
Ladprao Soi 101/38 Klongchan Bangkapi Bangkok 10240 THAILAND
TEL : [phone] FAX : [phone]
‘99.11.5,000 © PUB.M8001-E-9 Printed in Japan

TROUBLESHOOTING WITH THE ROOT ZX APEX LOCATOR
PROBLEM POSSIBLE CAUSES
“Instant” reading pulp chamber
efile is touching mefal crown or filling
No reading blocking apical opening
sudden curvature near apex
Erratic reading error; don’t push and pull file, instead,
rofate gently
of pulp tissue near apex—remove
more pulp tissue
sodium hypochlorite surface tension—replace
with
H,
electrical current interference; place a small
amount of Glyde File Prep gel into canal prior
to
file
insertion
og
tulsadental.com
WwW.
rn
Dene

Root ZX APEX LOCATOR
INSTRUCTIONS FOR USE
[)
Turn the Root
ZX
Apex Locator on—then connect probes.
')
Place file
in
holder and connect
lip
clip
to
patient’s lip.
Dry all moisture from pulp chamber.
)Place a small amount of Glyde File Prep™ gel into canal; this will help prevent erratic readings.
) Advance file with gentle clockwise motion until audible beep is heard (at about Level 2).
)
Continue clockwise advancement, nofing the meter’s movement toward the green bar. When beeps become
more rapid, the file
is
nearing
a
constriction. Continue advancing slowly until meter’s tooth symbol begins
flashing, signifying the file has reached a constriction.
)
Gently continue advancing until beeping becomes solid
or
continuous. The file has reached the terminus,
ot
apex. Very delicately continue advancing until the word "APEX" appears on the mefer and the red arrow to
right begins flashing. The file tip is now beyond the apex.
Carefully retract the file counterclockwise until the meter returns
to
the green bar area, and the tooth symb
begins flashing again. Now
the
file
is
at
the apical constriction.