Ivoclar Vivadent SR Ivocron - Manual (Page 2)

SR Ivocron Cold Hot Press
Liquid
Liquid Liquid
% wt.
Methyl methacrylate 86.5 65 90
Dimethacrylate 13.0 35 10
Catalyst 0.5 – –
Warning
SR Ivocron Opaquer Liquid, as well as the Cold, Hot, and
Press Liquids contain methyl methacrylate. MMA is
irritant and highly flammable (flash point: 10 °C/50 °F). Do
not inhale vapours. The material irritates eyes, respiratory
organs, and skin. Skin contact may lead to sensitization. For
further information, please refer to the EEC safety data
sheet (or MSDS).
Cold technique (pouring technique)
With the Cold Liquid, SR Ivocron may be used for short- and
medium-term temporaries, securing of ground denture
teeth, and repair of PMMA.
Temporaries
Designing the model, wax-up, and silicone key
Fabricate the working model from die stone. Produce the
wax-up and check shape and function. After that, a silicone
key is made.
Isolation
Boil out the wax and block out undercuts with pink wax.
Then, immerse the model in water for 5 minutes. Apply two
layers of Separating Fluid. Wait until the surface is no longer
shiny before applying the second layer.
Tip
Slightly rough or undercut dies may be isolated and
blocked out with the elastic SR Ivocron Separator isolating
gel. Apply SR Ivocron Separator and allow to dry for
approx. 5 minutes.
Incisal and Dentin
Mix the corresponding SR Ivocron incisal material in a small,
clean rubber cup, cover it, and let it sit for approx.
2–3 minutes. Use the same procedure for the Dentin
material. Apply the Incisal material in the incisal area of the
silione key, while it is still flowable. As soon as the Incisal
material stops flowing, the silicone key is filled up with
Dentin material. Reposition the filled silicone key on the
isolated model and hold it in place with a rubber band.
Polymerization
Polymerization is carried out in the pressure apparatus
(e.g. Ivomat) for 15 minutes at 40–50 °C (104–122 °F) and
2–6 bar pressure (29–85 psi).
2
Instructions for Use
Description
SR Ivocron is a PMMA veneering material. Depending
on the indication and the monomer used, SR Ivocron
can be used in conjunction with the cold, hot, or pressing
technique.
Indication
Cold technique (pouring technique)
– For short- or medium-term temporaries
– Securing of ground denture teeth on the cast framework
– Repairs
Hot technique (layering technique)
– Crown and bridge veneering technique
Pressing technique (flasking technique)
– Crown and bridge veneering technique
Contraindication
Direct use in the oral cavity
Composition
– SR Ivocron Dentin, Incisal, Cervical, and Intensive
Powders
consist of polymethyl methacrylate (> 98 % wt.),
catalysts, and pigments (< 2 % wt.).
– SR Ivocron Opaquer Powder
consists of copolymer, aluminium oxide, barium sulphate,
and titanium dioxide (> 98 % wt.), as well as catalysts
and pigments (< 2 % wt.).
– SR Ivocron Opaquer Liquid
Methyl methacrylate ≥ 99 % wt., catalysts ≤ 1 % wt.
Side effects
Systemic side effects are not known to date. In individual
cases, allergic reactions to PMMA materials have been
reported.
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