FAQ

Country/regional specific laws and guidelines referring to periodical testing or routine monitoring are individual and must be considered. Our recommendation for periodical testing is mentioned in the delivered IFU and depends on the integrated features in your sterilizer.

W&H recommends to record all periodic tests, repairs and modifications on the sterilizer in the logbook including date and signature of the person who carried out the test or other activity.

Keep the results according your country/regional specific laws and guidelines and the definitions in your QM. Those records can be of assistance in case of service as well.

Validation generally comprises a range of tests defined in internationally recognised standards. These tests begin for every device with the factory tests at W&H. In addition, corresponding documentation is included with your device. Prior to commissioning the device at your premises, the technician performs further checks to ensure the device functions correctly. Then, depending on the national/regional laws and directives, the device must be subjected to a so-called renewed performance qualification at regular intervals. For further information, please contact your dealer.

All validation and maintenance work should be performed by a qualified individual.

Information and videos relating to consumable components and how to replace them can be found on the Consumables & Accessories and Video Tutorial section of this web site.

Information and videos relating to the cleaning of the water tanks and cleaning products can be found on the Video Tutorial section of this web site.

The water quality for sterilizers is internationally specified by standards and directives. The reasons for this are that your sterilizer can be seriously damaged by it or the sterilization can be jeopardised. Consequently, only water with conductivity of less than 15 µS/cm should be used for your W&H sterilizer. The Multidem system (LINK) is especially suited to preparing suitable water.

To ensure that your instruments are stored in a sterile state from their successful sterilization until they are used, W&H recommends packing them in suitable sterile barrier systems from even before sterilization. The recommended storage periods can be found in your national/regional laws and directives. For further information, please contact your dealer.

If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.

The silent running noise at a maximum level of 66.5 dB(A) guarantees a quiet working environment.

If you are not sure what the cause of the problem is, it is better to call the service station and talk to a technician. Together with the technician it can be determined what needs to be sent in and sometimes it is possible to even solve the problem right away.

In accordance with the national regulations for aerosol cans. More information on disposal can be found on the safety datasheet.

Yes, W&H has checked the sterilizability precisely. W&H Service Oil F1 was not found to influence the sterilization of the instruments in any way.

W&H recommends that W&H instruments are lubricated with W&H oil which has been designed and developed to enhance the performance of your W&H instrument.

W&H Service Oil F1 has long­term stability between –30 oC and +160 oC.

Extensive research and testing produced a formula which best covers the extreme demands of dental instruments. It consists of an all-synthetic special oil of the highest purity supplemented by the specially developed additive package.

Yes, providing that your W&H handpiece carries the relevant sterilization symbol.

Yes, providing that your W&H instrument carries the relevant thermal disinfection and sterilization symbol and the thermo disinfector should have a drying cycle.

Yes, providing that your W&H handpiece carries the relevant sterilization symbol.

Yes, providing that your W&H instrument carries the relevant thermal disinfection and sterilization symbol and the thermo disinfector should have a drying cycle.

Check/replace the O-rings on the motor coupling/adapter (FAQ video Assistina O-rings). Ensure that the Start button is held depressed for at least 2 seconds when starting a programme. When the button is pressed, the green ball should be visible on the right in the functional display (cleaning solution). When the button is then released again, the green ball should be shown on the left. This procedure is also demonstrated in the FAQ video "Using Assistina". A detailed functional check can be found in the "weekly checklist" and in the "Test and functional check" section of the instructions for use.

Please find a detailed description about first startup, regular use and maintenance in the user manual. Furthermore you can find video tutorials about Assistina 301plus.

The pressure should be between 4 - 10 bar (58 to 145 psi).

Annually or if the filter is full of debris (visual check - filter should be white). Please see video about changing the filter).

• Cleaning the spray channels with W&H Activefluid
• Lubricating the rotating parts with W&H Service Oil
• Throughout the maintenance process, potentially contaminated aerosols are extracted from the process chamber and the exhaust air is cleaned using a HEPA filter.

All adaptors that are suitable for the Assistina 3x2/3x3 can also be used in the Assistina TWIN. There is only one exception: the RM/ISO adaptor for the Assistina 3x2/3x3 is not compatible with the Assistina TWIN. The HPI adaptor can be used for the Assistina TWIN instead.

During the maintenance process in the Assistina TWIN, the rotating parts are lubricated with oil and the spray channels rinsed with cleaning solution. These liquids are introduced to the handpieces using compressed air, which produces aerosols that may contain potentially contaminated body fluids (e.g. blood and saliva). In order to ensure that the apparatus poses no risk to the user, the patient or third parties, the law stipulates that aerosols must be prevented from leaking out of the apparatus. We make sure of this by using active suction and the HEPA filter. This HEPA filter must of course be changed regularly, which is why the lifespan of the filter is matched exactly to the capacity of the two cartridges. The HEPA filter therefore reaches the end of its service life once one set of cartridges has been used.

HEPA is short for 'High Efficiency Particular Air', and the filter is classified as HEPA class E11. This means that the filter retains all particles larger than 1 µm, which includes, among other things, a wide range of bacteria and viruses, suspended particles such as dust and respirable aerosols.

The intelligent process monitoring system documents the number of maintenance cycles that have been performed, thereby automatically calculating the number of instruments that can be serviced with the remaining quantity of fluid. The user receives an alert 300 cycles before the cartridge needs replacing (the oil and cleaner LEDs on the top of the unit turn yellow in colour).

The consumption volumes for each instrument are 0.07 ml of oil and 0.07 ml of cleaning solution. This gives a maximum capacity of 2857 cycles. In reality, the value is around 2800 to 2850 cycles, as initial filling is also required and the fill quantity of the cartridges is subject to certain tolerances that are regulated by the applicable standards.

The two cartridges and the filter can be changed easily without any tools. As with the Assistina 3x2/3x3, the fluid is supplied via tapping needles in the bottom of the cartridge spaces that penetrate the cartridge membrane, thereby drawing the fluid out of the cartridge. The two cartridges have different shapes to ensure that the two fluid types cannot be mixed up. In addition, it is only possible to install the HEPA filter incorrectly by using force, which is not necessary.

The oil is atomized in the Assistina TWIN before it is enters the instrument. This ensures full coverage of the gear parts, eliminating the need for technically complex and time-consuming rotational lubrication. However, there is no negative impact on the maintenance quality: the results of a maintenance operation correspond to those achieved with the Assistina 301 Plus.

Yes. All W&H surgical contra-angles and handpieces can be attached to the new motor EM-19.

No. In order to deliver the best balance we shortened the inner coupling length. Therefore contra-angles with only an L suffix cannot be attached to old motors

Yes. At W&H the letter "S" always communicates, that the surgical contra-angle is disassemble. The letter "I" communicates, that the surgical contra-angle cannot be disassembled (e.g. WS-75 L vs. WI-75)

Yes, providing that your W&H handpiece carries the relevant sterilization symbol.

Internal and external parts are of high quality stainless steel (including the contra-angle handpiece head).

The shaft of the bur should be at least 44mm long (ISO-shaft 104).

Yes, W&H handpieces with LED and generator are both sterilizable and thermodisinfectable .

The shaft of the bur should be at least 53mm long.

See detailed description in user manual or Video.

The abbreviation ISQ stands for Implant Stability Quotient. It is a value between 1 and 100 and gives the surgeon an insight of the implant stability after placing the implant. With the ISQ value the surgeon can monitor the osseointegration.

> To measure the ISQ of an implant, you first screw a so called SmartPeg into the placed implant. The SmartPeg, with its magnet on top, works like a small tuning fork. The magnet on the SmartPeg is ‘hit’ with magnetic pulses, from the probe, which makes the SmartPeg vibrate. Due to the stiffness in the interface between the implant surface and the bone the SmartPeg will vibrate accordingly. The more dense the bone is the higher stability and the higher ISQ value.

Please contact your local W&H partner
The sale of SmartPegs will be defined per country
The surgeon will receive 5 free SmartPegs. A voucher will be provided with the delivery of the product.

Torque is a one time, static measurement at the time of placement of the implant and cannot be repeated later on in a non-invasive way. Osstell ISQ measures the lateral stability of the implant and the measurements can be repeated in a non-invasive, dynamic way to monitor the development of osseointegration.

Yes. All control units SI-1023, SI-1015 and SI-1010 can be upgraded with the W&H Osstell ISQ module

The surgeon or dental nurse can easily attach the module to the right side of the Implantmed with the help of the provided quick manual. The module is plug-n-play via a USB connection.

No. The new motor has a new technological basis and is the shortest available

The LC stands for Light Contacts. This means that we have integrated an electrical connection into our new motors. The Light Contacts deliver power to our new contra-angles to offer our customers the best light at any rotation speed. For oral surgery handpieces from W&H, the LED remains in the head of the contra-angles

Yes. All W&H surgical contra-angles and handpieces can be attached to the new motor EM-19.

No. In order to deliver the best balance we shortened the inner coupling length. Therefore contra-angles with only an L suffix cannot be attached to old motors

Yes. At W&H the letter "S" always communicates, that the surgical contra-angle is disassemble. The letter "I" communicates, that the surgical contra-angle cannot be disassembled (e.g. WS-75 L vs. WI-75)

No. The new cable foot control S-N2 is based on the industrial CAN standard. So connecting the old foot control S-N1 is not possible.

W&H introduces a new concept in oral surgery and implantology. Via dongles (receiver), which can be connected to the unit by the doctor, the wireless foot control S-NW communicates with the surgical units of W&H.

It depends but basically yes. The following units can be retrofitted
Implantmed SI-923 REF16929000
Implantmed SI-915 REF16929001
Elcomed SA-310 REF15933100/15933101/15933102/15933103
Please contact your local W&H Partner to find out if the wireless foot control is already registered in your country

No, the Implantmed/Elcomed motor does not need greasing. The motor bearings require no maintenance. Any additional greasing would reduce the service life of the bearings.

No, the speed in program P4 is 15 rpm when in forward operation and 30 rpm in reverse operation. In program P5 (thread cutter function) the speed is 20 rpm in both forward and reverse operation and only the torque can be set.

The generator in the contra-angle handpiece requires at least 300 rpm to produce enough electricity for the LED. The rotary speed is between 15 and 50 rpm when positioning an implant.

The torque can be adjusted in P4 & P5 only. In- or decreaseing is done via either "+" or "-" button. A detailed description (factory settings, adjstable range,…) can be found in the user manual.

For propper tubing see "correlation of tubing" or user manual.

Yes, if the thermal washer disinfector has a drying cycle and the motor bears the sign that it is "Thermo washer disinfectable".

No. The new generation of motors have to be sterilized without cap.

Regular servicing of function and safety including the accessories is necessary and should be carried out at least once every three years, unless shorter intervals are prescribed by law. Detailed information can be found in the user manual at chapter "Servicing".

For applications which do not require accurate torque (drilling, grinding,…), any handpiece with ISO 3964 connection can be used. Please be informed that hand pieces from other manufacturers might not be able to handle the torque of your unit/motor and therefore might get damaged.

Not recommended. Due to different specifications (material, dimensions) it could cause problems like leakage, insufficient cooling or even damage the unit. For propper tubing see "correlation of tubing" or user manual.

Please find a detailed description in the user manual at chapter "Starting operation - General".

Please find a detailed description in the user manual at chapter "Hygiene and Maintenance".

The instrument detection is located in the LED socket and is automatically replaced at the same time as the LED socket.

Yes, it must engage audibly once, as otherwise the required torque is not achieved.

The user must replace the LED socket as soon as the protective coating on the LED discolours and the luminous power is impaired as a result. The length of time this takes can differ depending on the type of steriliser or sterilization process.

No
a. Different thread
b. Third-party device cannot find the correct resonance point – instrument fails to oscillate

The useful service life of the instruments is determined by the length of time they are used reprocessing and sterilization cycles have only marginal influence.
a. Instruments need to be replaced
- If there is a loss of power while working
- Where there is visible damage on the working part or the shank of the instrument.
b. Saws must be replaced if
- Teeth are broken off
- Teeth are worn
c. Diamond-coated instruments must be replaced
- As soon as the diamond coating is worn

a. Preparation in the ultrasonic bath:
- Place the instruments in the instrument tray and lower into the ultrasonic bath.
- Use cleaning agents and disinfectants suitable for hand instruments (probes, mirrors, forceps, etc.).
DO NOT USE a bur bath, as this is very aggressive.
- After cleaning in the ultrasonic bath, rinse adequately with water to remove any remnants of the cleaning agent and disinfectant from the coolant channels.
- Blow dry with compressed air after rinsing
- Replace dried instruments in the instrument tray and package for sterilization

b. Mechanical preparation in the cleaning unit and disinfector
- Use the cleaning adapter for cleaning units and disinfectors (see Instructions for Use – Accessories)
- After preparation in the cleaning unit and disinfector, check that the coolant channels are dry and, if necessary, dry again with compressed air.

No
a. Different thread
b. The Piezomed instrument detection cannot detect third-party instruments

Generally, prophylaxis contra-angle handpieces feature a seal on the head that prevents the ingress of saliva and paste. This extends the lifespan of the contra-angle handpiece.

The most effective removal of discolouration that at the same time protects the enamel and dentine as much as possible, depends on the polishing speed, i.e. revolutions per minute, among other things. With a speed ratio of 4:1 (four revolutions of the motor mean one revolution of the cup), the revolution speed of the Prophy cup is reduced. This means during application, there is no risk of paste splattering.

Yes. All existing and new instruments can be used with couplings from both the old and the new generations.

Use your thumb and index finger to retract the coupling's retention sleeve. The turbine can now be removed from the coupling without any problems. Pulling forcefully on the dental turbine can cause damage. If excessive force is required to remove the turbine, verify that the retention sleeve on the coupling can be moved without any problems.

A 6-hole connection for the turbine tubing is necessary to supply the turbine with electricity via electrical contacts. Other connections do not provide a power supply.

Yes. W&H also offers the "RM-34 LED" for Multiflex® connection.

No, thermodisinfection of the coupling is not permitted; sterilization in steam sterilizers can be applied at a temperature of 135°C. Hot air sterilization and/or cold sterilization (placing in liquids) are not approved.

No, the motor bearings require no maintenance. Any additional greasing would reduce the service life of the bearings.

No. You can purchase an Allegra LED G contra-angle which has its own light generator and a LED. No further investment necessary.

If you are not completely sure of the cause of the problem, it is better to contact your W&H service partner first and speak to a technician. It is sometimes possible to resolve malfunctions together with the technician and decide what needs to be sent in for repair.

The brushless electric motor is considerably less susceptible to wear than a brush motor, which in turn translates to minimised service and maintenance work. This also means less downtime for the user when servicing proves necessary.

The W&H Synea series – the glass rod elements are optimally suited for use together with the EM-12 L motor and its integrated LED+.

The EM-12 L electric motor can be integrated into a dental unit by selected dental unit manufacturers or their service technicians.

To connect the EM-12 L electric motor to your dental unit as an Add-on you require a free turbine hose on your dental unit and the possibility of connecting the control to the mains via the included power supply unit. You can control the EM-12 L electric motor using the foot control of your dental unit.

Yes, if your EM-12 L electric motor features the symbol “Sterilizable up to the stated temperature”.

No, that is not possible.

The Built-in electronic component does not require separate maintenance. However, regular servicing together with the rest of the dental unit should be performed at the intervals prescribed by the pertinent legislation. This makes it possible to guarantee proper function and safety. More detailed information on this topic can be found in the “Service” section of the respective instructions for use.

The EM-12 L electric motor as an Add-on version including accessories requires a regular check once every three years unless shorter intervals are prescribed by law. The regular service must only be performed by an authorised W&H service partner. More detailed information on this topic can be found in the “Service” section of the instructions for use.

Yes, providing that your W&H handpiece carries the relevant sterilization symbol.

Yes, providing that your W&H instrument carries the relevant thermal disinfection and sterilization symbol and the thermo disinfector should have a drying cycle.

Turbines with standard head sizes (models XX-98): 19 mm - 25 mm Turbines with small head sizes (models XX-97): 16 mm - 21 mm

The cutting part diameter for both head sizes is restricted to max. 2 mm. Please observe the technical data provided by the bur manufacturer. When using longer, rotary instruments for special treatment indications, the user must always select the operating conditions correctly in order to avoid placing the user, patient or anybody else at risk.

Use your thumb and index finger to retract the coupling's retention sleeve. The turbine can now be removed from the coupling without any problems. Pulling forcefully on the dental turbine can cause damage. If excessive force is required to remove the turbine, verify that the retention sleeve on the coupling can be moved without any problems.

A 6-hole connection for the turbine tubing is necessary to supply the turbine with electricity via electrical contacts. Other connections do not provide a power supply.

Please check drive air pressure on your unit and maintenance of the instruments (Synea with RQ connection = 3 +/- 0,3 bar, with Multiflex® connection 2,5 - 4 bar). For all Alegra turbines the pressure needs to be set between 2,5 - 2,8 bar.

Yes, providing that your W&H turbine carries the relevant sterilization symbol.

Yes, providing that your W&H turbine carries the relevant thermal disinfection symbol and the thermo disinfector should have a drying cycle.

25 mm for the standard turbine (XX-98 modells) and 21 mm for turbines with small head (XX-97 modells). When using longer rotary instruments the user must ensure by correct selection of the operating conditions, that there is no danger to the user, patient or third parties.

Yes, the new generation of turbines can be operated with both the existing and the new couplings.

Yes, it is neccesary to properly adjust the air/water pressure and if applicable the voltage for the turbine.

If there is electricity at the end of turbine hose, you need a proper coupling and a turbine with light (example: RQ-24 and TK-97 L). If no electricity is available, the simplest way is to buy a W&H Alegra turbine with LED and its Roto Quick coupling (e.g.: TE-97 LQ and RQ-54). It doesn't require any other investment in the dental unit.

No
a. Different thread
b. Third-party device cannot find the correct resonance point – instrument fails to oscillate

The useful service life of the instruments is determined by the length of time they are used reprocessing and sterilization cycles have only marginal influence.
a. Instruments need to be replaced
- If there is a loss of power while working
- Where there is visible damage on the working part or the shank of the instrument.
b. Saws must be replaced if
- Teeth are broken off
- Teeth are worn
c. Diamond-coated instruments must be replaced
- As soon as the diamond coating is worn

a. Preparation in the ultrasonic bath:
- Place the instruments in the instrument tray and lower into the ultrasonic bath.
- Use cleaning agents and disinfectants suitable for hand instruments (probes, mirrors, forceps, etc.).
DO NOT USE a bur bath, as this is very aggressive.
- After cleaning in the ultrasonic bath, rinse adequately with water to remove any remnants of the cleaning agent and disinfectant from the coolant channels.
- Blow dry with compressed air after rinsing
- Replace dried instruments in the instrument tray and package for sterilization

b. Mechanical preparation in the cleaning unit and disinfector
- Use the cleaning adapter for cleaning units and disinfectors (see Instructions for Use – Accessories)
- After preparation in the cleaning unit and disinfector, check that the coolant channels are dry and, if necessary, dry again with compressed air.

No
a. Different thread
b. The Piezomed instrument detection cannot detect third-party instruments