DENTSPLY MULTIMAT Touch - Pressing

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5.9 Pressing
In order to press an all-ceramic you need to place the pressing platform on the platform
carrier.
After having chosen „Pressable ceramics“ in the screen „Porcelain type“ the furnace directly
switches over to the program list for pressable ceramics. The press program for FINESSE
ALL-CERAMIC (FAC) is preset under 301.
Choose the Finesse All-Ceramic program from the list by touching the yellow sensor next to
the text. The furnace automatically switches to the screen on the left.
Description of the pressing procedure:
• After having started the program the firing chamber closes and the temperature rises
from the idle temperature (to be changed in the basic settings) to the starting temperature
of 700°C.
• The firing chamber opens automatically as soon as the starting temperature has been
reached. The upper end position is 158 mm high to facilitate placing the investment ring
on the pressing platform. The starting temperature of 700 C will be maintained. An
acoustic signal informs that you can place the externally preheated investment ring onto
the pressing platform in the furnace.
• After the placement of the investment ring touch the sensor „
% “. The press program will
be continued.
• The firing chamber closes, the vacuum pump turns on and creates a vacuum of 50 hPa.
• After reaching the final vacuum the temperature starts rising with a heat rate of 60°C/min
up to a pressing temperature of 930°C.
• The hold time on 930°C is 20 minutes.
• After elapsing of the hold time, the press cylinder comes down with 2.7 bar air pressure
and the pressing begins. The pressing force equals to 21.7 dN. Hold time is 10 minutes.
• After the pressing procedure, the press cylinder returns to its starting point.
• The firing chamber is ventilated and moves to its upper starting position. The pressing is
completed.
Note: While working with pressable ceramics always consider the manufacturer’s directions
for use.
Be sure to place the investment ring centrally on the pressing platform at all times.
Attention! Use pressing platform for pressing only! Crowns and Bridges fired on the above
mentioned pressing platform will be underfired!
Open the firing chamber with „ $ “
and start the program by touching
„start/stop“. The furnace changes
into the screen firing chart.
Note: Do not place the investment
ring in the muffle at this time. This
step comes later.