Ivoclar Vivadent Astropol - Manual (Page 2)

The restoration is finished and polished at medium contact
pressure (approx. 2N). The finishing and polishing procedure is
performed under water cooling, which also ensures evacuation
of polishing residue.
If excess material has already been removed with fine-grit dia-
mond grinding tools or the surface of the restoration has been
finished with this type of instruments, the first step (Astropol F)
can be omitted.
When old restorations are polished, it is often sufficient to use
Astropol HP only.
Astropol F / Astropol P / Astropol HP:
– Recommended rotary speed: 7,500 - 10,000 rpm
– Maximum speed: 10,000 rpm
– Only use with copious water spray (> 50ml/min)
– Use without polishing paste
– Sterilize polishers in the autoclave at 135 °C / 275 °F.
Proper use
– Use only straight/contra-angle handpieces which are techni-
cally and hygienically impeccable and regularly serviced and
cleaned.
– The handpiece drives must run smoothly.
– The instruments must be correctly inserted and secured.
– Polishing should be performed with a slight rotary motion to
avoid the creation of grooves.
– Jamming/leveraging should be avoided to reduce the risk of
instrument fracture.
– Deformed instruments that do not run smoothly should
cease to be used.
– From the point of view of safety, protective goggles and
breathing protection should always be worn in order to
avoid inhaling grinding dust. Efficient dust evacuation must
be ensured during the polishing procedure.
Warning
Improper use may lead to poor polishing results and a
heightened health risk. This product must only be used by
skilled persons.
Rotary speed
The recommended and maximum admissible rotary speeds indi-
cated in the Instructions for Use and on the packaging must be
observed. They must not be exceeded. The polishing instruments
tend to vibrate if the maximum admissible rotary speed is
exceeded. This may lead to the destruction of the polishing
instrument, deformation of the shank and/or fracture of the
instrument and thus poses a potential danger to the user/prac-
tice team and the patient.
Warning
Failure to observe the maximum admissible rotary speed
results in a heightened safety risk.
Contact pressure
High contact pressure during polishing will not produce an
improved polishing result, but will lead to the increased genera-
tion of heat and accelerated wear of the polishing instrument. A
mean contact pressure of approx. 2 N is sufficient.
Warning
When polishing intraorally, excessive pressure needs to be
avoided in order to prevent overheating and eventually
pulp damage. In extreme cases, instrument fracture may
result if too much pressure is applied, which can lead to
injuries.
Water cooling
In order to avoid unwanted heat generation on the tooth or soft
tissue surface, sufficient water cooling (at least 50 ml/min)
needs to be ensured. In addition, any residue produced during
polishing is rinsed off by the water spray.
Warning
Insufficient water cooling may lead to irreversible dam-
age of the tooth, the restoration and the adjacent tissues.
Storage, disinfection, cleaning and sterilization
– The polishing instruments should be stored in the original
packaging at room temperature and protected from dust,
moisture, pressure and re-contamination.
– Before using the polishing instruments on the patient for the
first time, they must be disinfected and sterilized.
– After having used the polishing instruments in the mouth of
the patient, they must be disinfected and cleaned and steril-
ized immediately.
– When manipulating contaminated instruments, protective
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