Mismatched exocad scans...is it possible?

[PearlySweetKate]

Hi. Your friendly in-house lab tech here, coming in after a long time away from this platform. Been teaching myself exocad and am confronted with something for the first time - can ya help a girl out? Assistant took a scan of a patient (crown #20) and post-processing was interrupted. She got tech to help finish processing and scans were sent to me as an STL's, which I then upload into exocad and work from there. Unfortunately, the data got jumbled somehow, but she was able to retrieve the scan pre-processing, post processed THAT, then resent them to me. Yay, I have a clear margin for #20.
However, the scans with the good prep data have a bad bite. The scan with the bad prep data has a good bite. I tried to pick and choose and upload the good prep scan and preprep scan, and chose the upper scan from the group with the good bite data. But they're not really meshing - see the amount of overlap in scans.
Is what I am trying to attempt possible? Or will we need to bring the patient back in for a better full scan and bite in one swoop?

 

[CoolHandLuke]

its tricky to load the good bite arches, export them as one stl then import that as a bite scan. very tricksy, precious.

 

[KingGhidorah]

I’m not familiar with exocad, but it should just be a couple clicks in blender to turn two STLs into a single STL.

 

[JonnyLathe]

Start a new cad design and bring in the 2 scans that are in good occlusion as your jaw scan and antagonist. Immediately go into expert mode. On the right side of the screen select tools and scroll down to add/remove mesh. Elect to load a generic visualization mesh and load the scan that has the good data and select "align."

Now you can select common points between the good scan to the bad scan, just pick a couple teeth on each side. Once you've got your points select to align, then hold control and select "best fit matching." The algorithm will automatically align the scans and show you a heat map of how accurately matched they are.

Now make everything invisible but the newly aligned scan, right click anywhere on the screen and select to save it as an .stl name it something like "goodscanaligned.stl" somewhere where you can easily find it.

Now you can bring the scan in a new design as your jaw scan in correct occlusion.

 

[MushMaster]

Exactly what JonnyLathe said. Make sure to right click on an empty part of the screen and not on an object. You may be prompted to 'Save visible objects only?'. It will save whatever is visible on the screen as one file in a format of your choice.

(If you right click on the object itself, it will save only that object ... which in this case is not the goal).

 

[ztech]

Start a new cad design and bring in the 2 scans that are in good occlusion as your jaw scan and antagonist. Immediately go into expert mode. On the right side of the screen select tools and scroll down to add/remove mesh. Elect to load a generic visualization mesh and load the scan that has the good data and select "align."

Now you can select common points between the good scan to the bad scan, just pick a couple teeth on each side. Once you've got your points select to align, then hold control and select "best fit matching." The algorithm will automatically align the scans and show you a heat map of how accurately matched they are.

Now make everything invisible but the newly aligned scan, right click anywhere on the screen and select to save it as an .stl name it something like "goodscanaligned.stl" somewhere where you can easily find it.

Now you can bring the scan in a new design as your jaw scan in correct occlusion.

It may be easier for a someone learning Exocad to use the "extra jaw scan" function and let the program replace with a single common point selection.
For the OP: same as above Except: choose an "extra jaw scan", Load: (select model with good margin). A prompt will appear asking if the mesh is stored in relative to scan data coordinate system. Choose no. This will bring up a split screen that will ask you to select a single common point between the two models. The models will do an automatic align. Then it will ask if you want to combine or replace, choose replace. Then continue with the design.

 

[Avrutin]

Hi. Your friendly in-house lab tech here, coming in after a long time away from this platform. Been teaching myself exocad and am confronted with something for the first time - can ya help a girl out? View attachment 44634Assistant took a scan of a patient (crown #20) and post-processing was interrupted. She got tech to help finish processing and scans were sent to me as an STL's, which I then upload into exocad and work from there. Unfortunately, the data got jumbled somehow, but she was able to retrieve the scan pre-processing, post processed THAT, then resent them to me. Yay, I have a clear margin for #20.
However, the scans with the good prep data have a bad bite. The scan with the bad prep data has a good bite. I tried to pick and choose and upload the good prep scan and preprep scan, and chose the upper scan from the group with the good bite data. But they're not really meshing - see the amount of overlap in scans.
Is what I am trying to attempt possible? Or will we need to bring the patient back in for a better full scan and bite in one swoop? View attachment 44635 View attachment 44636

There is couple Options:

1.Bitefinder > Cost 5-10 Bucks for find Adequat Occlusion.
2. Print Both Modells, put together and Scan Buccal for new Bite
3. Try 2 move Antogonist per Hand in Experten Mode, but Chance that you Balancing right Occlusion is low.
4. Load Buccal Scans if its Come from 3shape and Reocclusion over "Biteorientation Scan". Thats Works over Experten Modus > Tools > Load Mesh > Choice Biteorientation Scans > Ok and after Exocat ask to Use new Loaded Bite as Reference. After this Swap in Wizard and if did come immeditly Menu with Splitscreen Top and Botton just go next Step it will Come. Set Points on Mesh and Scan, With Ctrl + Left Mouse you can make more like 1 Point.
5. Let Patient Come and Rescan just Occusion Buccal.