14 XO FLEX Quick Guide .................................................................................................................. 93
6
XO FLEX – Instructions for use EXTRAORDINARY DENTISTRY
XO FLEX must be inspected and serviced every 12 months by an XO authorized
XO CARE and the XO authorized service provider offer 36 months warranty on XO
1 EXTRAORDINARY DENTISTRY
Dear XO user,
Please read this manual carefully and explore all the equipment’s extraordinary features:
• The unit shall be installed as described in section 2
• In section 3 we describe how you use the equipment for performing extraordinary dentistry
• You may configure the unit to your own personal needs – see details in section 4
• Read details about infection control and cleaning in section 5
• Maintain the unit as described in section 6
• XO FLEX must be inspected and serviced every 12 months by an XO authorized service
provider to ensure safe operation and high uptime – see details in section 8
• In section 9 you find a checklist containing all infection control and maintenance
procedures that must be observed
• Section 10 contains a complete list of accessories, detachable parts and consumables that
you should be aware of
• In section 0 we list important legal information
• Please see section 12 for a list of symbols used and section 13 for technical product details
• Finally, in section 14 you see XO FLEX Quick Guide
Find more information at xo-care.com or contact XO customer service at info@xo-care.com.
Best regards
Kim Sørensen
CEO XO CARE A/S
service provider to ensure safe operation and high uptime.
Authorized service providers are listed under “Distributors” at xo-care.com.
FLEX provided that the unit is serviced as prescribed.
7
XO FLEX – Instructions for use Installation
Condition
Operation
Transport and storage
Temperature:
+15oC – +40oC
-40oC – +60oC
Relative humidity:
20% – 85%
10% – 95%
Air pressure:
800 hPa – 1060 hPa
700 hPa – 1060 hPa
Installation altitude
Max. 2,000 meters above sea level
-
2 INSTALLATION
XO FLEX is intended to be permanently installed in a dental operatory at least 220 cm wide and
1
360 cm long
For transport and storage conditions see Table 1 and in Table 2 the installation requirements are
given.
– see Figure 1 and see the required operation conditions in Table 1.
1
Note: This dimension depends on the depth of the cabinets – in the example shown in Figure 1 the cabinets are 50 cm deep
Figure 1 – Plan of installation – XO FLEX
Table 1 – Operating and transport/storage conditions
8
XO FLEX – Instructions for use Installation
Electrical
Requirement
Length above
Mains supply
230 VAC + 10%, 50 – 60 Hz with earth min. 3 x 1,5 mm2
75 cm
Equipotential earth (if
1 x 4.0 mm2
Assistant call control
Min. 2 x 0.1 mm2 and max. 2 x 1.25 mm2
75 cm
X-ray unit attached to the
Cable for X-Ray must have its own installations pipe. Cable shall be connected to an
Suction motor control
Min. 2 x 0.1 mm2 and max. 2 x 1.25 mm2
75 cm
Positioning of cables in
See installation drawing YB-235.
Data
Requirement
Length above
Isolation transformer
When connecting the external PC to the unit, the external PC must be equipped with
RS-232 cable
Connect unit and external PC through a RS-232 cable, male/female. The cable’s
70 cm
XO HD Display
Connect XO HD Display and an external PC through a HDMI cable.
10 cm
Intraoral video camera
Connect the intraoral video camera to an external PC through a USB A cable
USB extension
Suction, air and water
Requirement
Height above
Suction
Suction machine power >600 l/min.
Incoming (compressed)
Pipe 3/8” female internal thread – preferably fitted with a ball valve – see YB-235.
7 cm max.
Incoming water
Pipe 3/8” female internal thread – preferably fitted with a ball valve – see YB-235
7 cm max.
Backflow prevention
If the unit is not supplied with “unit backflow water prevention” it must have an
Drain
Plastic pipe Ø 32 mm with socket – see YB-235.
6 cm max.
Table 2 – Installation requirements
floor surface
Main fuse 10 A
required by national law)
cable
XO unit
cable
the floor
Max. 2 A / 60 VDC or 2 A / 25 VAC
installation box in the floor.
Max. 2 A / 60 VDC or 2 A / 25 VAC
a medical grade power supply or be powered via a medical grade isolating
transformer! XO part number: XO-620
male connector to the unit end.
Depending on the environment it might be necessary to use an HDMI amplifier with
the HDMI cable.
male/female. The cable’s female connector is in the unit end.
It is recommended to use a USB Extension 10 m cable with Repeater from Dürr
Dental - part number: 2106-155-60.
Vacuum pressure at the connection point under static conditions: Min = 35 mbar,
Max = 150 mbar.
Plastic pipe Ø 32 mm with socket – see YB-235.
floor surface
cable: 20 cm
floor surface
6 cm max.
air
Incoming air:
• Air pressure 5.5 – 7,5 bar
• Air flow rate > 55 l/min
• Humidity dew point < -20°C at atmospheric pressure
• Oil contamination max. 0.5 mg/m
• Particulate contamination < 100 particles/m
If the incoming air pressure exceeds 7,5 bar a reduction valve must be fitted.
Air quality must be in accordance to local quality of air regulations.
Incoming water:
• Inlet pressure 2.5 – 6 bar
• Water flow rate > 5 l/min
• Water hardness < 2.14 mmol/l (< 12
In case of poorer water quality, water softener should be replaced more often than
the normal recommendation, for example twice a year
• pH: 6.5 – 8.5
• Maximum particle size < 100µm
If the incoming water pressure exceeds 6 bar a reduction valve must be mounted
before the unit.
Water quality must be in accordance to local drinking water regulations.
external backflow prevention device at the connection point with the water supply,
or an air gab of at least 20 mm.
Gradient of waste water lines > 1%
Drainage capacity > 10 l/min
3
3
(particle size 1 – 5 µm
o
dH)
9
XO FLEX – Instructions for use Installation
XO FLEX unit must be installed by an XO authorized service provider.
WARNING: To avoid the risk of electric shock, this equipment must be connected to a
When connecting an external PC (including monitor) to the XO FLEX unit, the
Installation instructions for XO FLEX can be downloaded from xo-care.com.
Authorized service providers are listed under “Distributors” at xo-care.com.
supply mains with protective earth.
external equipment must be powered by a medical grade isolating transformer (e.g.
XO part number: XO-620).
The external equipment must also comply with the applicable standards, e.g.:
•IEC 60950-1 (information technology equipment) or IEC 62368-1 (electronic
equipment within the field of audio, video, information and communication
technology), and
•IEC 60601-1 (medical electrical equipment)
When external equipment is connected to the XO FLEX unit to create a medical
electrical system, the requirements of IEC 60601-1, 3
with.
It is the responsibility of the person/organization installing and/or modifying the
equipment to ensure that the system conforms to applicable legislation, e.g.
Directive 93/42/EEC, or Regulation (EU) 2017/745, and the requirements of IEC
60601-1, 3
rd
edition.
rd
edition, must be complied
10
XO FLEX – Instructions for use Operation
A complete technical description of XO FLEX is available at xo-care.com.
3 OPERATION
3.1 GENERAL
XO FLEX is a combined dental unit and patient chair which is to be used by skilled dental
operators for prevention and treatment of diseases in the oral cavity of humans.
The unit has a compact floor-mounted stand fitted with a patient chair, a cuspidor and singlecolumn pivoting articulated balanced arms for the instrument bridge, operating light and display –
see Figure 2.
Figure 2 – Main XO FLEX elements: (1) unit stand, (2) patient chair, (3) cuspidor and cup filler,
(4) unit column, (5) instrument bridge, (6) operating light, (7) HD Display and (8) foot control
11
XO FLEX – Instructions for use Operation
Please note that XO FLEX must be operated in accordance with this manual and by
To avoid injury to persons or material, do not use XO FLEX or its accessories if signs
Do not use XO FLEX in oxygen-rich environments!
Use of other equipment adjacent to or stacked on this equipment should be avoided
Do not simultaneously touch the patient and any external electrical equipment such
Do not simultaneously touch the patient and the connector for peristaltic pump on
dental professionals only!
of operational, electrical or mechanical defects are found.
This equipment does not have a gas sealed electronic enclosure and could ignite any
flammable or explosive gases in its environment.
because it could result in improper operation.
as PCs, monitors, etc.
the rear panel of the unit.
3.2 SWITCH THE UNIT ON
Switch the unit on (and off) using the main switch – see Figure 3.
The unit is ready for use after a few seconds when the text “XO FLEX” is shown on the instrument
bridge display and you hear the welcome tune.
Figure 3 – Main switch (1)
12
XO FLEX – Instructions for use Operation
In case of emergency, use this switch to turn off the unit.
Always place the instrument bridge to the left of the unit when the patient is
X
O
3.3 INSTRUMENT BRIDGE IN PARKING POSITION
accessing the chair as shown in Figure 4.
In this position, the patient does not see the instruments when getting in and out of the chair and
the bridge will be easily accessible for cleaning and disinfection.
Figure 4 – Position of instrument bridge for optimal patient access to chair
3.4 FOOT CONTROL
FUNCTION
XO FLEX is controlled hands free by using the foot control – see Figure 5 – and the chair base
joystick – see Figure 6.
Figure 5 – Foot control
The foot control has:
• a pedal that can be moved to the right (⮕), to the left (⬅) and pressed down (⬇)
13
XO FLEX – Instructions for use Operation
In this manual, the above-presented terminology (e.g. ▲ = move joystick to north) will
See section 14 for an overview of the foot control and chair base joystick functions.
• an X button
• an O button
• a joystick that can be moved north (▲), west (◄), south (▼) and east (►)
When all unit instruments are at rest, the foot control manages functions related to the unit and
chair etc.
When a unit instrument is lifted forward, the foot control manages the active instrument.
The chair base joystick is used to position the patient chair.
The chair base joystick can be moved north ( ), west ( ), south ( ) and east ( ) – see Figure 6.
Figure 6 – Chair base joystick
be used to explain the functions of XO FLEX.
POSITION THE FOOT CONTROL
Place the foot control close to the unit’s supporting leg and operate it with your right foot when
working in positions 9 – 11 o’clock (see Figure 7). In working position 12 o’clock you may find it
easier to use the left foot (right-handed operator).
Figure 7 – Optimal position of foot control
14
XO FLEX – Instructions for use Operation
3.5 XO SMART LINK
XO SMART LINK is an optional software running on an external PC connected to FLEX.
With XO SMART LINK you can configure the function of the foot control and you can work with
instrument programs.
Please see “XO SMART LINK instructions for use”.
3.6 PATIENT CHAIR
FOOT CONTROL OF PATIENT CHAIR
Use the foot control to position the patient chair.
Position the chair in working position 1 with .
Position the chair in working position 2 with .
When you activate the chair moves to the entry position – the position used to enter the chair
and for rinsing.
Activating brings the chair to the previous position – the last “still” position prior to the present.
See Figure 8.
Figure 8 – Position the patient chair using the chair base joystick
SMALLER ADJUSTMENTS OF PATIENT CHAIR
You make smaller adjustments of the chair with the foot control joystick:
• Lift the chair with ▲ (north)
• Lower the chair with ▼ (south)
• Increase the backrest inclination with ►(east)
• Decrease the backrest inclination with ◄ (west)
See Figure 9.
Figure 9 – Smaller adjustments of the patient chair using the foot control joystick
15
XO FLEX – Instructions for use Operation
The patient chair is equipped with a function stop:
To avoid damage never place any objects, including operators’ seats, under the
The patient chair is dimensioned to carry a patient with a weight of up to 150 kg!
XO FLEX is intended to be used primarily with supine patients!
SAFETY
The chair has been designed with a hinged backrest and is shaped so that the legs of the
operators will not be trapped below the chair when moving downwards.
You interrupt all automatic chair movements immediately by touching any button on
the foot control or by lifting an instrument forward.
patient chair.
Exceeding the maximum allowed weight will compromise the structural stability of
the unit and the patient chair.
SUPINE PATIENT POSITION
The unit is designed with over-the-patient delivery of instruments for working primarily on supine
patients. That allows you to see all tooth surfaces in good working postures – see details in section
3.7.
NECK REST
The patient chair is equipped with an adjustable neck rest, supporting the patient’s neck and head.
Figure 10 – Neck rest with (1) longitudinal lock and (2) release handle
To obtain the best patient experience, please follow these instructions when bringing the patient
into a working position:
1. Start positioning the chair
16
XO FLEX – Instructions for use Operation
Always use the handles to position the instrument bridge.
2. Release the longitudinal lock (1) – see Figure 10
– while the chair is moving
3. When in the desired working position, adjust the angular position of the neck rest using the
release handle (2)
CHILD CUSHION
For treatment of children, a child cushion is available.
Figure 11 – Child cushion
3.7 INSTRUMENT BRIDGE IN WORKING POSITION
To obtain easy access to and optimal balancing of the instruments, place the instrument bridge
close to the center of the patient’s chest – with a distance from the tips of the instruments to the
oral cavity of 30 cm – see Figure 12.
Figure 12 – Position of instrument bridge while working
Never pull the instrument bridge using an instrument – this may damage the
instrument suspension.
BALANCED INSTRUMENTS
Grab an instrument as shown in Figure 13.
17
XO FLEX – Instructions for use Operation
Figure 13 – Lifting an instrument forward
Each instrument suspension is fitted with a spring that can be adjusted so that the instrument is
perfectly balanced - see section 8.4.
FOUR-HANDED OR SOLO WORK
Figure 14 – Four-handed operation – here the operator is working in the 9 o’clock position, the chairside
assistant in the 3 o’clock position and the hand instruments are positioned near the patient’s temple
XO FLEX is equally suited for four-handed (Figure 14) and two-handed operation (Figure 15).
Figure 15 – Two-handed operation – here the operator is working in the 11 o’clock position
WORKING POSITIONS
With the patient in the supine position you may work in positions between 9 o’clock to 12 o’clock
(see Figure 16) to obtain the best possible vision while maintaining a healthy sitting position (see
section 3.24.)
The patient chair neck rest allows you to place the patient’s head in six different positions (see
18
XO FLEX – Instructions for use Operation
Figure 17). This, combined with the flexibility of working in positions between 9 and 12 o’clock (see
Figure 16), provides you with the best possible view of each tooth surface without bending or
straining your neck, spine or upper body.
Figure 16 – Four operator’s positions
19
XO FLEX – Instructions for use Operation
Figure 17 – Six different patient positions
20
XO FLEX – Instructions for use Operation
3.8 INSTRUMENT CONTROL
FOOT CONTROL OF INSTRUMENTS
You activate the first instrument lifted forward with the foot control pedal. To avoid unintentional
activation of a second instrument lifted forward you will only be able to activate the second
instrument when the first instrument is laid back and the foot control has been released.
The syringe may be used even though another instrument is lifted forward.
The intraoral video camera may be used simultaneously with another activated instrument – but
control of camera functions via the foot control is only possible when the video camera is the only
instrument lifted forward.
INSTRUMENTS ON THE INSTRUMENT BRIDGE
Up to 6 instruments may be fitted to the instrument bridge.
Figure 18 – Numbering of unit instruments
The instruments are numbered 1 – 6 starting from the left.
Your XO authorized service provider may add instruments or change the order of the instruments –
the multifunction syringe, however, must always be placed to the left (right-handed operator) or to
the right (left-handed operator).
INSTRUMENT BRIDGE DISPLAY
Data concerning the selected instrument is shown on the instrument bridge display – see Figure 19
– and the instrument may be controlled using the foot control.
Figure 19 – Instrument bridge display
21
XO FLEX – Instructions for use Operation
X
O
The display consists of:
• One red 8-digit text field mostly used for indication of the primary instrument parameter (for
example, speed of a micro motor)
• Three green LEDs for indication of selected amount (three levels) of spray water or for spray
water off (all LEDs off)
• One blue LED for indication of spray air on/off
• One white LED for indication of automatic chip blow enabled/disabled
3.9 SYRINGE – LUZZANI
The syringe is used as described in the manual supplied by Luzzani – or visit luzzani.com.
Lift the syringe forward and control it with the two buttons.
The syringe can be used at the same time as the other instruments.
3.10 MICROMOTOR – BIEN-AIR MC3 / BIEN-AIR MX2
The micromotor is used as described in the manual supplied by Bien-Air – or visit bienair.com.
The micromotor is intended to be used with contra-angles and handpieces with couplings as
specified in ISO 3964, type 2 or type 3
Lift the micromotor forward and control it with the foot control.
Activate the motor clockwise in the range 100 RPM – select maximum speed
2
(see below) with ⮕
or counterclockwise with ⬅.
Figure 20 – Foot control of micromotor
See the maximum speed on the display when the foot control is not activated.
See the actual speed on the display when the motor is running.
Change spray selection (water & air, air only or no spray) with X.
2
Please note that this is the speed of the micro motor itself. When you fit a contra-angle the speed of the bur may be changed!
22
XO FLEX – Instructions for use Operation
When the automatic chip blow is enabled a short burst of high-pressure air dries the
To avoid necrosis, it is generally recommended to work with a “wet” spray that gives
Enable/disable automatic chip blow with O.
preparation each time an instrument with spray water stops.
Using the automatic chip blow function significantly reduces the number of shifts
between rotation instrument and syringe.
Choose between three levels of spray water:
Increase amount of water with ►.
Decrease amount of water with ◄.
at least 50 ml spray water per minute measured with the contra-angle fitted!
In some cases – e.g. when preparing a cavity that is not close to the pulp – and you
want to minimize the spray aerosol – it may be acceptable to use less water in the
spray.
Choose between three maximum speed levels:
Increase maximum speed with ▲.
Decrease maximum speed with ▼.
3.11 XO OSSEO MOTOR
XO OSSEO motor is intended for bone surgery in general and for dental implantology.
XO OSSEO motor is intended to be used with surgical contra-angles and handpieces with
couplings as specified in ISO 3964, type 1.
SET-UP
Appropriate sterile handling procedures must be observed to ensure and maintain sterile
conditions:
1. Remove the sterilized motor and hose from the autoclave bag – or wrap motor and hose
immediately before use.
2. Connect the motor hose to the matching connector at the rear of the instrument bridge –
see section 5.8. The instrument suspension shall be configured as MOTOR.
3. Prepare the peristaltic pump as described in section 3.16.
4. Remove the sterilized contra-angle from the autoclave bag just prior to surgery.
5. Slide the contra-angle firmly in place on the motor shaft.
6. Attach the sterile irrigation tube to the contra-angle using one of the two supplied outlets –
See Figure 21. The choice of outlet depends on the contra-angle.
23
XO FLEX – Instructions for use Operation
To avoid necrosis, it is generally recommended to work with an amount of irrigation
X
Figure 21 Attaching the irrigation tube
OPERATION
Lift the motor forward and control it with the foot control.
Activate the motor clockwise in the range 100 RPM – select maximum speed
3
(see below) with ⮕
or counterclockwise with ⬅.
See the maximum speed on the display when the foot control is not activated. See the actual
speed on the display when the motor is running.
Figure 22 – Foot control of XO OSSEO motor
Switch irrigation on/off with X.
Choose between three levels of irrigation:
Increase amount of irrigation with ►.
Decrease amount of irrigation with ◄.
of at least 50 ml per minute measured with the contra-angle fitted!
Choose between three maximum speed levels:
Increase maximum speed with ▲.
Decrease maximum speed with ▼.
3
Please note that this is the speed of the motor itself. When you fit a contra-angle the speed of the bur may be changed!
24
XO FLEX – Instructions for use Operation
The motor operates at maximum torque.
When the automatic chip blow is enabled a short burst of high-pressure air dries the
X
O
Please see section 3.11.3 if you need to control the maximum torque!
IMPLANT SURGERY - OPERATION WITH XO SMART LINK
In combination with XO Smart Link you can work with instrument programs and implant
treatments.
Please see “XO Smart Link – Instructions for use”.
3.12 AIR INSTRUMENT
An air turbine or an air scaler may be attached to the hose – in the following called “the air
instrument”.
The air instrument is used as described by the supplier.
Air instruments with a type 3 coupling as specified in ISO 9168 shall be used.
Lift the air instrument forward and control it with the foot control.
Activate the air instrument (one step) with ⮕ or ⬅.
Figure 23 – Foot control of turbine
See drive air (in % of maximum) on the display.
Change spray selection (water & air, air only or no spray) with X.
Enable/disable automatic chip blow with O.
preparation each time an instrument with spray water stops.
Using the automatic chip blow function significantly reduces the number of shifts
between rotation instrument and syringe.
25
XO FLEX – Instructions for use Operation
To avoid necrosis, it is generally recommended to work with a “wet” spray that gives
X
Choose between three levels of spray water:
Increase amount of water with ►.
Decrease amount of water with ◄.
at least 50 ml spray water per minute measured with the turbine hand-piece fitted!
In some cases – e.g. when preparing a cavity that is not close to the pulp – and you
want to minimize the spray aerosol – it may be acceptable to use less water in the
spray.
Choose between three drive air levels:
Increase drive air with ▲.
Decrease drive air with ▼.
3.13 ULTRASONIC SCALERS
The ultrasonic scaler is used as described by the supplier.
For XO ODONTOSON scalers see below in section 3.14.
Lift the scaler forward and control it with the foot control.
Switch on the power (one step) with ⮕ or ⬅.
Figure 24 – Foot control of scaler
See the power (in % of maximum) on the display.
Enable/disable irrigation water with X.
Choose between three levels of irrigation water:
Increase amount of water with ►.
Decrease amount of water with ◄.
Choose between three power levels:
• Increase maximum power with ▲.
• Decrease maximum power with ▼.
For details about XO ODONTOSON 360 scaler see below.
26
XO FLEX – Instructions for use Operation
For Thin Line instruments please observe:
For details about other scalers – see user manuals supplied by the manufacturer.
3.14 XO ODONTOSON 360 ULTRASONIC SCALER
XO ODONTOSON 360 is intended to be used for treatment in the oral cavity of humans. XO
ODONTOSON 360 is a multi-purpose dental scaler for periodontology, endodontics and
prophylaxis.
XO ODONTOSON 360 is supplied with one handpiece and six instruments (consisting of a titanium
tip fitted with an exchangeable ferrite rod) fitted into two autoclavable instrument holders in Teflon:
Universal instrument (209080) – 2 pieces
For removal of supra- and subgingival stain and calculus in all areas and for general scaling on
patients with moderate plaque or calculus.
Perio instrument (209030)
Removes supra- and subgingival stain and calculus in all areas. Particularly useful for removal of
subgingival calculus in pockets as deep as 13 mm. Use the tip as if using a periodontal probe.
Thin Line Straight instrument (209034) – 2 pieces
Useful for fine planning after gross scaling with other XO ODONTOSON 360 instruments. Provides
good furcation access. Is also useful for root planning, but only after gross debridement with a
Perio instrument.
Use only for fine scaling or debridement after gross scaling with other instruments.
Repeated use of Thin Line instruments for gross scaling can result in damage to the
titanium tip.
Thin Line instruments should never be used at power level settings more than 50 %
of maximum power.
Heavy Duty Straight Instrument (209010)
Particularly useful for removal of supra- and subgingival calculus labially and lingually. Can be
applied interproximally, using the rounded tip to remove calculus and other heavy deposits and
stains.
27
XO FLEX – Instructions for use Operation
Do not attempt to sharpen, bend or otherwise re-shape the instrument tips!
When working with XO ODONTOSON 360:
Increasing the contact pressure will neither increase the efficiency nor improve the
Doing so may seriously degrade the performance of the instrument.
For a complete list of available instruments – including instruments for endo procedures – please
visit xo-care.com.
HOW TO USE XO ODONTOSON 360
To fully benefit from the rotational titanium tip movement and high frequency, it is important that
the instrument is properly handled and applied – see Figure 25.
Use short, sweeping, paintbrush-like, back and forth strokes over the surface being treated.
Keep the tip moving back and forth with the end of the tip probing the pocket when necessary.
Figure 25 – Using XO ODONTOSON 360
•Always use the instrument parallel to the tooth surface with the sides of the
tip applied to the tooth surface
• Do not apply the tip at right angles to the tooth surface
• Do not use the tip as a pick – this will scratch the tooth surface
• Always apply very little pressure to the tooth surface
quality or speed of the treatment!
If you use XO ODONTOSON 360 instrument in this way you will achieve:
• Easy access to any tooth surface without awkward positioning of the hand-piece and hand.
As the tip rotates and is "active" on all sides, you have a 360° highly efficient working
surface without “dead zones”.
28
XO FLEX – Instructions for use Operation
Only use XO ODONTOSON 360 on teeth and root surfaces.
Risk of thermal injury!
Handle the instruments carefully as the attached ferrite rod is fragile!
Always use as much irrigation water as practically possible to avoid unnecessary
Always empty the hand-piece of any water before applying a new instrument.
It is important that the instrument is always firmly seated in the hand-piece!
• The rotational motion brushes rather than “hammers” the tooth. This has a gentle polishing
effect on the tooth. It is generally much less painful for the patient and less tiring for the
operator.
Use the mirror to hold lips and tongue away from the instrument tip.
Avoid touching patient lips, tongue or other soft tissue with the non-cooled part of
the instrument tip!
wear of the instrument.
CHANGING THE INSTRUMENT
Detach the instrument from the hand-piece just by pulling it out.
Figure 26 – Changing instrument
Wipe off any drops of water before applying an instrument.
29
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