Correct equipment key to sterilisation


This article is sponsored content brought to you by A-dec.

When it comes to infection control in the dental surgery, most people instantly think of a bench-top steam steriliser.

However, sterilisation alone may not be effective without first cleaning critical and semi critical instruments like handpieces with an appropriate detergent to remove gross debris, biofilm and other contaminants from both the surface and the inside handpieces prior to sterilisation.


Today’s dental practices often have multiple surgeries—meaning large volumes of handpieces need to be reprocessed quickly to keep up with patient appointments.

The only way to consistently achieve this is to use an automated handpiece maintenance unit.


The ADA recommends automated instrument maintenance units (such as the W&H Assistina) over manual processing because they provide more consistent results in removing built up contaminates within the handpiece that inhibit the flushing of lubricant. This may in turn interfere with the sterilization process.

Currently only one device, the W&H Assistina 3×3 offers an independently verified instrument-cleaning process, ensuring handpieces are cleaned inside and out with an appropriate detergent and receive the optimum amount of lubricant every cycle.

Assistina 3×3—so called because it: (1) cleans internally; (2) cleans externally; and (3) lubricates up to three handpieces at a time—uses W&H’s specialised ActiveFluid™ detergent prior to flushing and lubrication. ActiveFluid is a gentle, slightly alkaline (pH 7.6) water-based formulation that contains an anionic surfactant, making it ideal for cleaning and neutralising acidic organic contaminants, notably blood and saliva, while also inhibiting the growth of viruses and bacteria. 

Another instrument processing option is the super-fast Assistina TWIN, which is perfect for preparing instruments that have been decontaminated in a Thermo Washer Disinfector such as the popular Miele units.

The Assistina TWIN uses innovative oil nebulisation technology, ensuring an even coating of lubricant to the drive mechanisms in just 10 seconds! Like all Assistinas, this device eliminates lubricant wastage, keeping maintenance costs down to just a few cents per handpiece.


Correct load selection and maintaining a complete vacuum inside a vacuum steam steriliser to remove air from inside pouches and the lumen (hollow space) inside instruments is another vital aspect of effective infection control. 

The latest W&H Lisa VA steriliser’s Universal B cycle is suitable for all load types (solid, hollow, porous), whether unwrapped, wrapped or double-wrapped, ensuring reprocessing of all instruments meets Australian Standards AS 4815 & AS 4817. Most importantly, the Lisa is the only bench-top steriliser with an air leak detector (such as hospital sterilisers) to detect NCG (non-condensable gases) or leaks, ensuring the load is subject to the correct saturated steam in every cycle.

The Lisa is not only secure, but also fast; thanks to its automatic load sensing ability that adjusts the cycle time to the mass of the load. A typical 2 kg mixed load can be fully sterilised and dried in just 30 minutes.

Lisa’s internal memory provides fully automated record keeping as required under Australian Standards for Infection Control, and can be monitored wirelessly in real time by Smartphone or iPad on the Lisa App.

Most practices also use an attached LisaSAFE label printer, which will only print Batch Code Information (BCI) pouch labels if all cycle parameters have been met i.e. time, steam pressure and temperature, providing full traceability and added peace of mind. ≤

Lisa VA steriliser

The W&H Assistina range and Lisa sterilisers are available exclusively
from A-dec. 

Phone 1800 225 010 or visit to locate your nearest A-dec dealer.


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