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4 Maintenance and Cleaning
For reasons of hygiene, we recommend using a disposable protective sleeve
for each patient. Make sure to fit the protective sleeve closely to the light
guide. Disinfect contaminated surfaces of the device and antiglare cones
(FD 366/Dürr Dental, Incidin Liquid/Ecolab, CaviCide/Metrex Research).
Sterilize the light guide before each use if disposable protective sleeves are
not used. Make sure that no liquids or other foreign substances enter the
handpiece, charging base and particularly the power pack during cleaning
(risk of electrical shock). Disconnect the charging base from the power
source when cleaning it.
Cleaning the housing
Wipe the handpiece and handpiece holder with a customary aldehyde-free
disinfecting solution. Do not clean with highly aggressive disinfecting
solutions (e.g. solutions based on orange oil or with an ethanol content of
more than 40%), solvents (e.g. acetone), or pointed instruments, which may
damage or scratch the plastic. Clean dirty plastic parts with a soapy solution.
Pre-treating the light guide
Before cleaning and/or disinfecting the light guide, pretreat it. This applies to both automated and manual cleaning
and disinfection:
– Remove substantial contamination immediately after use or 2 hours after that at the latest. For this purpose,
thoroughly rinse the light guide under running water (for at least 10 seconds). Alternatively, use a suitable
aldehyde-free disinfecting solution to remove any adherent blood.
– To remove contamination manually, use a soft brush or soft cloth. Partially polymerized composite can be
removed with alcohol and a plastic spatula, if necessary. Do not use sharp or pointed objects, as they may
scratch the surface.
Cleaning and disinfection:
Machine cleaning and disinfection in a washer-disinfector unit should be preferred.
Mechanical cleaning and disinfection the light guide (Disinfector/CDU (cleaning and disinfection unit))
Machine cleaning and disinfection is possible using e.g. Neodisher® MediClean forte, Dr. Weigert, 0.5 %, according
to the cleaning program, e.g. cleaning 55 °C (131 °F) (+5 °C (41 °F)/–0 °C), 5–10 min, disinfection 90 °C (194 °F)
(+5 °C (41 °F)/–0 °C), 5–10 min.
Manually cleaning and disinfecting the light guide
For manual cleaning, place the light guide in an instrument cleaning solution (e.g. ID 212 forte/Dürr Dental) for
the recommended reaction time (15 minutes). Make sure that the light guide is sufficiently immersed in cleaning
solution (cleaning bath with sieve insert and lid). Observe the instructions for use of the disinfectant manufacturer
when using cleaning and disinfectant solution.
When cleaning and disinfecting, please make sure that the agents used are free of:
– organic, mineral and oxidizing acids (the minimum admissible pH value is 5.5)
– alkaline solutions (the maximum admissible pH value is 11)
– oxidizing agent (e.g. hydrogen peroxide)
After the cleaning process, remove the light guide from the solution and thoroughly rinse it under running water
(20 +/– 2 °C / 36 +/– 4 °F ) for at least 10 seconds.
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