Bellavest ® SH
Shock-heat or conventionally heatable, phosphate-bonded precision casting
investment material for all crowns, bridges and pressable/press-to-metal ceramics
Safety instructions
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Please read and follow the instructions in the insert
“Safety instructions and general instructions for BEGO investment materials”!
Preparation Pressable/Press-to-metal ceramics
Fix and sprue the wax-up according to
the instructions of the ceramics
manufacturer.
Investment Liquid: BegoSol ® HE (Frost-sensitive! Storage and transport temperature: + 5 °C to +35 °C / 10 °F to 95 °F)
Before mixing, rinse out the clean mixing bowl with water and wipe off.
Mixing bowls that are not clean or are dry withdraw moisture from the investment material!
Firstly, put in liquid and add powder, mix thoroughly with a spatula by hand for 30 seconds (or by machine using).
Then mix for 60 seconds in a mixing unit under a vacuum at 350 rpm. Keep under vacuum for additional
30 seconds without stirring.(Mixing without mixing unit: 2 minutes on the vibrator.)
Available working time: approx. 5 minutes (20 °C / 70 °F, 50 % liquid).
At higher room temperatures the working time will be reduced!
Fill crowns carefully with a fine instrument. Fill the mould ring on the vibrator at the lowest vibration level.
Do not vibrate any more after filling!
If heating is to be carried out without a ring, remove the ring used for investment as soon as possible after complete
setting of the investment material (at 20 °C / 70 °F after approx. 15 minutes); metal mould rings cannot be removed.
Pressing moulds must be left to cool for 25 – 30 mins after their being filled until the investment material has
completely set. Any deformation, caused, for example, by moving the mould or premature removal from the mould,
can cause micro cracks in the investment material, which can cause the mould to break during pressing.
For shock heating, comply with the time window foreseen for insertion (20 – 30 minutes after mixing is initiated)
and the insertion temperature (900 °C)!
Crown and bridge alloys
Wax the sprued copings on the BEGO base socket mould former
so that the distance to the mould edge and top surface is at
least 5 mm ( 1 / 4 ”). Spray a thin coat of Aurofilm wetting agent
and blow completely dry.
Plastic copings (e. g. Pattern Resin or Palavit G) must be thinly coated with wax.
Use BEGO fleecy inlay strips:
1 strip for metal mould rings in sizes 1 + 3,
2 strips on top of each other for sizes 6 + 9 as well as for all non-precious alloys.
Handling:
The strips must be approx½ cm longer than the circumference of the mould ring. Moisten strips slightly.
Press strips in mould ring so that they overlap and are flush with the top edge of the mould ring.
Slip over the wax-up and press the lower edge of the mould ring into the base socket mould former.
Mixing ratio
100 g Bellavest ® SH : 25 ml liquid
Mould size
1
3
6
9
F
90 g bags 100 g bags 160 g bags
1/22,5 ml
2/45 ml
4/90 ml
6/135 ml 1/25 ml
2/50 ml
4/100 ml
5/125 ml –
1/40 ml
2/80 ml
3/120 ml
Press-to-metal ceramic (Metal): 70 % for all indications
Press-on ceramics: (zirconium dioxide)
for all indications: max. 40 %
Liquid concentration
for pressable ceramics
(layering and staining techniques)
Inlay MO and OD
Inlay MOD
Crowns, veneers and bridges
%
20 %
30 %
HE/H 2 O
8/32 ml 12/28 ml
for crown and bridge alloys
60 – 70 %
70 – 80 %
75 – 85 %
40 %
16/24 ml
The concentrations are standard values and can be adapted
according to the working conditions and object size. Never
dilute to less than 20 %!
50 %
20/20 ml
60 %
24/16 ml
70 %
28/12 ml
80 %
32/8 ml
90 %
36/4 ml
made of wax made of wax
made of plastic
made of plastic
Modelling:
without
with pressure
without pressure
with pressure
pressure
(4 bar)
(e. g. Pattern Resin)
(4 bar)
Inlays and partial crowns
35 % 40 % – –
Crowns, bridges and primary parts
in precious metal
45 % 50 % – –
in precious metal-to-ceramic alloys
50 % 60 % – –
Secondary parts in precious metal
cone, ring telescope, full telescope,
–
–
45 –75 % 50 – 80 %
groove-shoulder attachment
Crowns and bridges
(Co-Cr) 75 – 85 % 80 – 90 % –
–
in non-precious
(Ni-Cr) 70 – 75 % 75 – 80 % –
–
metal-to-ceramic alloys
Non-precious double crowns
– – 90 –100 % –
(external parts)
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