autocast universal
®
230 Casting System Model casting Stand 1.9. 03 A 22
2. Titanium one-piece casting
technique
One-piece casting for crowns of 2° and 4° taper is possible
with the following procedure.
Telescopic crowns are dealt with separately in section II.
I Conical crowns
1. Preparation
Wax up primary crowns on the master model.
Angulation (tapering) 2° or 4°.
2. Duplication
Duplicate the master model with the primary crowns using
Rema
®
-Sil silicone (Ord.-No. 108-700-00/108-701-00).
3. Producing the duplicate model from
rematitan
®
Plus investment
Degrease the negative silicone mould with Lubrofilm
®
(Ord.-No. 112-050-00).
Mix rematitan
®
Plus investment (Ord.-No. 107-600-00) and
rematitan
®
model casting mixing liquid (Ord.-No. 107-601-00)
in a ratio of 250 g : 40 ml and fill the silicone mould.
4. Setting time
40 minutes.
5. Drying the model
70°C/158°F, 40 minutes
Harden the model with Ökodur cold hardener (see page A 15)
6. Recommended waxing
Upper jaw horse shoe thickness 1 mm
Upper jaw skeletal plate thickness 1 mm
Upper jaw transversal bar thickness 1 mm
Additionally reinforce lower jaw lingual bars.
● To ensure complete casting of secondary crowns the
minor connectors must be waxed thicker.
● Waxing thickness of the secondary crowns not less than
0,5 mm.
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