Smilestyler
Denturist
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So I noticed in the 3shape training videos they are CAD removable partial denture frameworks. Is anyone CAM yet? How are they turning out? popcorn
What are some advantages vs casting? What alloys is used?
@smilestyler
The partials are designed digitally - there are tools from 3Shape and SensAble available. The resulting 3D-file (STL) can be used to print a resin model which will be used like a wax model for casting. Benefit like the other posts describe: productivity. More partials a day.
Systems to print resin models for casting are available today from Envisiontec and 3D-Systems more will come later this year.
Here in Germany we already have four labs using laser melting for partials.
No casting, direct manufacturing of the metal framework with good fit.
My customers today prefer the smaller machine from Conceptlaser.
The problems mentioned with fit will be reduced - as we recognised - if you move to zero expansion investment materials. First you have to calibrate your scaling factor of the prints (They will no longer fit to the stone models - like green Zirconia) then you invest without liquid, just water.
This causes less deformation of the models.
Traditionally the liquid compensates the shrinkage of the cooling down metal,
now you scale the model first to the shrinkage factor - like industry casting processes.
Milling of partials makes sense if you move to biocompatible materials for allergic patients who need metalfree dentures.
Our customers have good results with milling machines from KAVO and industrial machines like DMG, Roeders etc. take care of a good CAM system and correct milling tools and cutting parameters.
But it's already possible with excellent results.
For this design you have to select the SensAble software - it offers more tools to design than the competitors.
Won't the clasps snap (assuming that's zirconia)? Also, do you have any idea how long that took to mill and what the cost was? You would use up a whole disc for one..
lol.. yea i would just use a stapler and a rubber band!