DENTAURUM Orthocryl LC Mode D'emploi page 12

4.1.1 Application of the separating medium (REF 162-800-00) on plaster models
• Apply the separating medium from the dosing bottle (REF 162-100-00) directly on the model and spread evenly
using a brush.
• Stand the model on its back (tuber plane) so that excess fluid can drain away.
• After approx. 30 seconds, carefully blow away separating medium residues or droplets with compressed air and,
if necessary, remove residues from screws and wire retentions with a dry brush.
• Application of the acrylic can start immediately afterwards!
4.1.2 Application of the 3D separating medium (REF 162-801-00) on plastic models
To fabricate dental models, we recommend using high quality plastic models that were made using DLP (Digital Light
Processing). e. g. prime4me
very precise fitting, these models allow for the usual process in the laboratory.
Due to the large variety of materials for model printing, it is essential to test the suitability of the 3D separating
medium before its use.
• Apply the 3D separating medium evenly with a brush over the entire model before the expansion screw (or screws)
and wire elements are finally fixed in place, and allow the separating medium to dry thoroughly. To this end,
apply the separating medium from the dosing bottle (REF 162-100-00) directly on the model and spread evenly
using a brush.
• Stand the model on its back (tuber plane) so that excess fluid can drain away if necessary.
• Allow the layer of separating medium to dry thoroughly.
• Repeat the process in order to achieve an even separating layer everywhere.
• If required, block out undercuts in the tooth/jaw area and fix the expansion screw(s) and wire elements as usual
on the dried plastic model.
• Application of the acrylic can start immediately afterwards!
5. Processing Orthocryl
Example: expansion plate
Orthocryl ® LC is generally applied to the model that is dry and isolated but not hydrated. Mark the position of the
expansion screws on the model and drill a hole or a groove with a conical bur (e.g. REF 123-598-00) for the screw
holder. Fill the hole on the model with heated wax (e.g. REF 119-150-00) and insert the expansion screw with the
lower, basal part of the holder. Remove the expansion screw after the wax has hardened.
Fix bent wire elements to the model with sticky wax (REF 122-300-00).
Isolate the model as described under point 4.1.
Application of acrylic can start immediately afterwards!
Apply Orthocryl LC to the removed expansion screw so that the screw is completely surrounded by the material
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(Fig. 6). Please observe that the expansion screw is completely embedded in acrylic without any air bubbles. After-
wards insert the expansion screw back into the drilled hole with the wax coating. The wax in the hole ensures that
the expansion screw settles in the same position as determined before.
With wire retentions, apply Orthocryl
complete wire (Fig. 7).
Next, apply Orthocryl LC until the desired form and thickness of the appliance (maxilla approx. 3 mm / mandible
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approx. 4 – 5 mm) is achieved (Fig. 8). Should this process require more than a single step, dip the tip of the
cartridge slightly into the material already applied before each new step. This prevents air inclusions between the
layers.
Eliminating air bubbles
If air bubbles should build up during application, they can be opened with a pointed instrument, e.g. a probe, and
filled. You can also inject additional Orthocryl
surface and disintegrates.
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base model (REF 430-110-10). Besides being highly accurate and therefore ensuring
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LC
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LC to the space between wire and plaster model first and then embed the
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LC from underneath the air bubble so that it moves towards the
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