Zubler VARIO PRESS 300, Руководство по эксплуатации

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6.
Important notes for the processing of Lithium Disilicate
VARIO PRESS 300. e
6.1 Investment
■ Recommended investment with
respective quantity of liquid:
• Zubler HS-PC
25ml total liquid on 100g powder
„ Speed investing “:
■
The processing temperature of the
investment, the liquid and the water
should be between 20-23°C. Do not
store in a refrigerator!!!
■ Check the best-before-date of the
investment and liquid.
■
Use distilled water only.
■ The concentration of the liquid/water
mix influences the hydration expansion
and consequently the fit.
TIP:
The VARIO BALANCE programma-
ble scale precisely calculates
the required amount of indi-
vidual components of liquid
and powder to achieve a
constant perfect result.
6.2 Mixing of Investment
■ Zubler HS-PC
Pre-evacuation:
20s
Mixing under vacuum: 60s
Rotation of the mixing device:
min. 420 r.p.m.
■ From time to time check the vacuum
efficiency of the mixing device.
■ The vacuum must always have maxi-
mum “performance”. Insufficient
vacuum can cause rings to crack or
break.
6.3 Preparation of the ring
■ Spruing of the pattern:
Molar, premolar,
tripartite bridge:
Ø 3,5mm
Front, inlay: Ø 3,0mm
Length of sprue: 3 – 8mm
■ Single objects with one sprue.
■
3-unit bridges on both bridge abut-
ments, no sprue at the pontic.
■ Always attach the sprues in the direc-
tion of flow of the ceramic and at the
thickest part of the wax-up.
■ The maximum height (wax
sprue) of 16mm must not be exceeded.
■
Sprue angle: 45° - 60°
Choice of ring size:
■ 100g ring for 3g pellets
200g ring for 3g resp. 6g pellets
■
Bridges can only be pressed in the
200g ring.
■
Design of the attachment points
round and slightly tapered, no sharp
angles or edges.
■
Minimum distance between the
objects: 3mm
■ Minimum distance to the silicone
ring: 10mm
■
Wax weight up to max. 0,75g
3g Pellet for 100g or 200g ring
Wax weight up to max. 2,00g
6g Pellet for 200g ring only
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