Forming granules support the model and allow unnecessary model base height to be buried. This reduces the vertical distance the heated sheet must travel and can improve thickness distribution. Granules…
FAQ Tag: Erkoform
Should the model be placed directly on the forming plate?
That depends on the model design and appliance. Some models can be placed directly on the machine’s model plate, while others are better embedded into forming granules so unnecessary base…
How should I position the model in the thermoforming machine?
Position the model so the heated sheet can flow as evenly as possible over the required anatomy. Avoid unnecessary tilting that causes one area, particularly the anterior teeth, to become…
Why is model permeability important in vacuum forming?
Vacuum forming works by removing air from beneath and around the model so atmospheric pressure can draw the heated sheet onto the anatomy. Very dense or poorly positioned models can…
Does the model need to be completely dry before thermoforming?
Stone models should be adequately dry before thermoforming, particularly for vacuum-forming workflows. Excess moisture can interfere with airflow and may contribute to surface or heating problems. Printed models should also…
Can I thermoform over a stone model?
Yes. Dental stone models have been used successfully for thermoforming for many years. The model should be accurate, sufficiently dry and appropriately trimmed. When vacuum forming, the model and surrounding…
What equipment is required for in-house aligner production?
A typical in-house workflow requires an intraoral scan or digital model, orthodontic planning software, a 3D printer or access to printed models, suitable model resin, a thermoforming machine, aligner material…
How can I maintain consistent material thickness when thermoforming?
Keep model height as low as practical, position the model consistently and use the correct material program and starting thickness. Avoid unnecessary model base height and excessive inclinations that force…
Which thermoforming system is better for a dental laboratory?
A laboratory producing a wide range of appliances may find either system suitable, and some laboratories use both. Vacuum systems are convenient, fast and do not require compressed air; pressure…
Which system produces more consistent material thickness?
Both vacuum and pressure systems can produce consistent results when the process is controlled. Final thickness is strongly influenced by model height, model position, sheet temperature, starting thickness and tooth…