technical presentation
EasyModel performs a series of processes according to the type of model requested and the parameters provided.
Below is an overview of the main steps:
1. Common deletions to remove artefacts.
2. The cutting of the impression according to the chosen objective.
3. Producing the base
Do you still have questions? see our FAQ at the bottom of the page.
Common soft tissue removals
EasyModel automatically removes all the artefacts that are bothersome or unnecessary for the desired model, such as soft parts (cheeks, tongue, etc.).
Impression with artefacts to be removed.
Maxillary impression with cheek/lip in red which must be removed.
Different types of cuts
Model
This type of cut preserves as much of the gingival data as possible and depends on the arch. For the maxilla, it retains the palate so that it can be adapted to several types of prosthesis (plates, pendulum, palatal arch, quadhelix, etc). For the mandible, he cuts as close as possible to the junction with the gums, to enable the dental technician to judge the height available in the patient’s mouth to accommodate certain appliances.
Splint models
In accordance with the constraints of thermoforming manufacturing, this cut only preserves the teeth and a margin of a few millimeters of gums around the teeth.
Fixed retainers
Similar to the splint cut, the gums and hard palate are reduced to a minimum. The cut is made in the middle of the X5 teeth on the anteroposterior axis.
Base generation
You can define the type of filling of the base with 4 possible options: either no filling (hollow), or with a plate inside the palate (hollow with plate), or only in the gum (full) or complete (full with plate).
Model engraving
If you wish to mark your model, enter the text and it will be engraved either on the base, if there is one, or on the largest surface detected on the model.
Other possible treatments
Other possible treatments include filling the model with a reinforced honeycomb structure, specifying the diameter and thickness of the cells, rotation along the 3 axes to optimise the layout on the printing plate and finally the study model.
FAQ technical presentation
1°) Model making - Cleaning/Cutting
The main steps in making an orthodontic model are generally
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- The cleaning of the prints
- The cut-outs
- The base creation
- Additional tasks
This is a common treatment for all models. The aim is to remove artefacts that correspond to capture aberrations or external elements such as the manipulator’s finger. The soft tissues (oral mucosa, tongue, floor of the mouth, uvula, tonsils and soft palate) that are of no interest for orthodontic prostheses are then removed. EasyModel’s AI has learnt to recognise these elements and removes them in a first processing stage.
Cutting depends on the use of the digital model:
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- The simplest one is limited to the upper or lower cut for the maxilla or mandible of the impression after cleaning. This type of model is used for the manufacture of prostheses such as plates, pendulum, quadhelix, etc.
- The “splint” type cutting which corresponds to the manufacturing of splints only and thus complies with the constraints of manufacturing by thermoforming of this type of prosthesis.
- The “fixed retainer” type of cutting corresponds to the manufacture of fixed restraints only and is therefore adapted to the needs of this manufacture.
For the maxilla, the cut-out leaves the entire palate and sufficient gum height to be used for any type of appliance. For the mandible, the cut must be made at the palate level, as close as possible to the gum, to allow the prosthetist to judge the height available in the mouth to adapt certain appliances.
Here, for both maxillary and mandibular teeth, only the teeth and a margin of a few millimeters of gums (and potentially hard palate if present) are preserved around the teeth. In addition to the commonly removed elements, the superfluous parts of the hard palate and gums are removed (if present).
The normal cut passes as close as possible to the teeth. On request, the “tall splint” cut-out leaves an extra 3 mm of gum height.
Here, in addition to the common removals, the hard palate and posterior teeth are also removed. Only the anterior part up to the middle of the second premolar is kept.
The next models to be available will be low-cut models for braces and models specifically designed to support mobile devices.
2°) Tasks performed on the models after cutting
Depending on the configuration of the model and the parameters specified by the user, the following tasks can be performed after cutting:
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- Straightening of the occlusal plane.
- Base creation at different heights.
- Engraving of the model.
- Study Model.
- Alignment of the models on the printing trays.
Depending on the user’s choice, EasyModel can leave the models hollow or full them with a honeycomb structure or a smooth surface. As for the palate, it can be left empty or filled with a smooth surface.
EasyModel starts by trying to find the label to be engraved from the file name. Users can enter the text they want engraved on their model. EasyModel then determines the best surface i.e. on the plate if there is one on the model or otherwise on the largest flat surface on which it can engrave the specified text.
You can specify the depth of the engraving and the size and height of the characters required, which will be respected by EasyModel as far as possible.
EasyModel is not a 3D printing software. However, to limit redundant tasks to the user, he can arrange the models according to the axis he indicates to optimize the layout on the plate during printing.
3°) Dental models
For dental, you can generate simple models (see above). This avoids the need to clean up artefacts, remove soft tissue, straighten the occlusal plane, or engrave.
We are working on other tasks more specific to dental models.