Digital Analogs in 3D Printed Modelwork

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McTechnician

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We have been printing our own digital model work for years now and as of recently we have been having problems with implant model work specifically, and for the most part it only affects a couple of our accounts. One of our doctors sends most of their cases back for contact add-ons (they are using the Prime scan with Neodent scanbodies, and we use the Neodent analogs and Ti-bases) its to the point where our model work is showing the opposite of what's in the mouth (ex. mesial is open in the mouth but on the model the distal is open)

But more recently we have had more problems with one specific account where in 3 cases (1 Straumann, 1 Neodent and 1 Neoss) the scanbodies were off a fraction of a turn. All were scanned with an Itero (Itero is involved in trying to figure it out, but are slow) but they were off to a degree that shouldn't be possible. The Neodent case was especially odd because it had 2 units, 8&9, and one was off and the other was dead on. But each of the cases resulted in a Remake (the Neodent one had to resort to a conventional impression to finish it, because the 2nd scan was exactly like the first with the scanbody facing a different direction.

Has anyone else had any issues like this, or any idea what the problem might be? We've been wracking our brains trying to figure this out and I'm at a loss. I work in the CAD department but have very little to do with the 3d Printers and the Model Work. But any insight would be much appreciated, thanks in advance!
 
Had similar issue. Fixed it by getting Doc new scan bodies. The doctors office was autoclaving the scan bodies ( not titanium ones) and they were warping.
Fixed issue.
 
Had similar issue. Fixed it by getting Doc new scan bodies. The doctors office was autoclaving the scan bodies ( not titanium ones) and they were warping.
Fixed issue.
I was wondering why there are metal scan bodies. This ... ⬆️
 
I always ask to see the scanbody X-ray first. Instructed all of my accounts that if they can't produce a scanbody X-ray then they have to pay full charge for the remake. Better they learn with their wallet than yours, especially when it comes to implants. Have seen the warped scanbody issue as well, but you can check that in exocad or 3shape with the libraries...very simple and easy to catch during fabrication.
 
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