Ivoclar Vivadent IPS e.max Press Abutment Solutions v.2 - Manual (Page 22)

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Removing­the­reaction­layer­
After fine divestment, the reaction layer formed during the press procedure is removed using IPS e.max Press Invex Liquid.
The procedure is carried out as follows:
– Pour the Invex Liquid into a plastic cup.
– Immerse the pressed object in the Invex Liquid and clean in an ultrasonic cleaner for at least 10 min and at most 30 min.
Make sure that the objects are completely covered with Invex Liquid.
– Use the sieve insert to remove the restoration from the Invex Liquid and clean the object under running water and blow
dry.
– Carefully remove the white reaction layer with type 100 Al
2
O
3
at max. 1–2 bar (15–29 psi) pressure.
– Make sure that the reaction layer is completely removed, both from the screw channel and the outer side of the object
(repeat the procedure, if necessary).
– If the reaction layer is not completely removed, problems may occur in the further course of the fabrication process.
– Replace the IPS e.max Invex Liquid after 20 applications or after sedimentation of the Liquid.
Warning
– The Invex Liquid contains < 1% hydrofluoric acid.
– It is harmful when inhaled, swallowed and when it comes into contact with the skin. Furthermore, it is corrosive.
– Keep the container tightly sealed and store it in a well-ventilated place (acid cabinet).
– If the material comes into contact with the eyes, immediately rinse with copious amounts of water and see an ophthalmologist
immediately.
– In case of accidental contact with skin, immediately wash with plenty of water.
– Use suitable protective clothing, gloves and goggles when working.
– In case of an accident or physical discomfort, see a physician immediately, and take the Invex label with you, if possible.
Disposal
– Neutralize the Invex Liquid before disposal!
– Use the IPS Ceramic Neutralization Powder to neutralize the Invex Liquid.
– For 50 ml Invex Liquid, approx. 3–4 g of IPS Ceramic Neutralization Powder are required.
– Note: strong foam development during neutralization.
– Carefully add the neutralization powder to the Invex Liquid in small portions until foam is no longer formed; then allow a
reaction time of 5 minutes.
– If larger quantities are disposed of, check the liquid with litmus paper (must show an alkaline reaction).
– After the reaction time, pour the neutralized solution into the sink, flushing it with running water.
To remove the reaction layer, immerse the pressed objects in IPS e.max Press Invex ... ... and place in an ultrasonic cleaner for at least 10 and at most 30 minutes.
Using Al
2
O
3
and a pressure of at most 1–2 bar (15–29 psi) pressure, carefully remove
the reaction layer from the outer side ...
... and the screw channel.