Ivoclar Vivadent IPS Empress Esthetic Speed - Manual (Page 3)

3
Vacuum mixer
Vacuum mixing time (at room temperature) 1.5 min
Speed 350 rpm
Processing time 5.5 min
Setting time min. 30 min – max. 45 min
The processing time depends on the material temperature, mixing quantity, mixing time and mixing intensity.
A higher material temperature and/or a longer mixing time shortens the processing time.
Investment
– Mix max. 400 g investment material in one go.
– Closely observe mixing ratio!
– Investment is carried out on a shaker under slight vibration. Allow the investment ring to set without
manipulating it.
Some aspects influencing the setting expansion of the investment material
– Temperature of the investment material and the liquid
– Residual water in the mixing cup, atmospheric humidity
Preheating / holding times
Starting temperature
(Switch on the preheating furnace in time)
850 °C / 1562 °F
Holding time after reaching
the final temperature of 850 °C / 1562 °F
100-g investment ring – min. 45 min
200-g investment ring – min. 60 min
If more than 2 investment rings are preheated at the same time, the holding time at the final temperature
has to be prolonged by 15 minutes per additional investment ring.
Note
If several Speed investments are to be conducted, they should be invested consecutively and placed into the
preheating furnace at an interval of approx. 20 minutes. When placing the investment rings in the preheating
furnace, make sure that the furnace temperature does not drop substantially. The stipulated holding time
counts from the point when the preheating temperature has been reached again.
IPS Empress Esthetic
Ingot Preheating
Alox plunger Preheating
One-Way-Plunger No preheating
The IPS Unitray ensures that the ingots and the Alox plungers are optimally preheated and positioned in the
preheating furnaces.
Important information
– Do not use a debubblizer (tenside). Reactions with the investment material may occur.
– Consistent results can only be achieved under consistent conditions and if the Instructions for Use are
observed.
– Dilute liquid exclusively with distilled or de-ionized water.
– Liquid concentration: The more distilled or de-ionized water is added to the mixing liquid, the lower the
setting expansion. Additionally, the strength of the investment material is reduced. Do not dilute the liquid
to below 50%.
– Use only dry, clean instruments to process the investment material. Do not use plaster mixing cups.
– Do not invest under pressure since this changes the product properties.
– The setting time must be closely observed, since it decisively influences the expansion.
– Always remove pressed investment rings from the press furnace immediately after the end of the program
and place them on a grid for cooling.
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