Ivoclar Vivadent IPS PressVEST v1.pdf - Manual (Page 8)

Investing – Dispense liquid.
– Add powder.
– Mix the investment material with a spatula for 20 sec. until the material is evenly wetted.
– Mix the investment material under vacuum for 60 sec. Regularly check the vacuum mixing apparatus. After
mixing, slowly evacuate the vacuum.
– Slightly vibrate the ring when pouring the material into it according to the corresponding Instructions for
Use.
– Do not invest more than two rings at the same time (proceed quickly).
– Working time: approx. 6 min. at room temperature
Setting time – The minimum setting time is 60 minutes.
– Do not disturb the ring during the setting stage.
– Do not invest under pressure
Preheating – Increasing temperature: 5 °C/9 °F min.
– 30 Min. bei 250 °C/482 °F
– 60 Min. bei 850 °C/1562 °F
Important notes – Preparation of the restorations, sprueing, investing, pressing, divesting and cleaning of the pressed
objects are carried out according to the corresponding Instructions for Use.
– Completely remove excess separating liquid before investing, as these materials prevent the
investment material from setting properly.
– Do not use surfactants (debubblizers), as reactions with the investment material may occur.
– Consistent results can only be achieved by following the Instructions for Use.
– The stipulated working time must be observed. The liquid can be stored in the refrigerator at
5–10 °C / 41-50 °F.
– Dilute the investment mixing liquid only with distilled or deionised water.
– Liquid concentration: Increasing the percentage of distilled water that is added to the investment
mixing liquid will lower the amount of setting expansion and compromise the stability of the
investment material. Do not use a liquid concentration that is less then 50 % investment mixing liquid.
– Always use clean and dry instruments with the investment material. Do not use mixing beakers that have
been used with gypsum.
– The minimum time specifications (setting time/preheating time at 850 °C (1562 °F)) must be observed.
– Working time
The working time depends on the material's temperature, the quantity of material to be mixed, the mixing
time and the mixing speed of your mixing device.
– Higher material temperatures shorten the working time.
– Longer mixing times shorten the working time.
– The larger the quantities to be mixed, the shorter the working times.
– Certain factors that influence the setting expansion of the investment material:
– Temperature of the investment material and liquid
– Residual water in the mixing cup
– Atmospheric humidity
– Generally, wax sprues of max. 3 to 8 mm in length should be used for sprueing of the waxed-up objects. To
sprue oblong objects (e.g. delicate MODs), choose a short sprue rather than a long one so that the
pressing time is not unnecessarily prolonged.
IPS e.max Press / IPS e.max ZirPress / IPS InLine PoM
Ingot Alox plunger
Preheating do not preheat do not preheat
IPS Empress 2 / IPS Empress Cosmo
Ingot Alox plunger
Preheating do not preheat preheat
IPS Empress Esthetic
Ingot Alox plunger
Preheating preheat preheat