screw retained crown with atlantis
Currently, my preferred way to use an Atlantis abutment is with a cement retained crown because the workflow is so slick and seamless, but going screw retained just takes a bit more work. This is a test case on a model that I did to look at the steps for a screw retained crown. When choosing the abutment type, you select a screw retained custom base. The core file that is sent back to you will contain the screw access position and orientation in the gingival mask folder (took me a minute to find it). You just need to use form minus or circular shape tools to reduce the porcelain in the area of the screw so that when it mills you'll see the dimple of where to cut through.
On 12/10/2017 at 5:48 pm, Randall Montgomery said...Nice...Sure better than having to guess or mark through the abutement.
Absolutely. If you order a cement retained abutment and try and do a "screwmentation" procedure, it's just a guess and the hole can get big.
Awesome, thank you for the details. Just uploaded a couple of screw retained cases to atlantis and will see how if goes.
Dan, I'm doing my first IOFlo case this week. At this point, since first writing this thread, are we now able to use pre-holed e.max abutment blocks or do we still need to do your technique for hole placement with the atlantis abutment? The Astra rep was just in the office and said you could use the abutment blocks, but I wasn't so sure about that. Not confident Ivoclar and Dentsply would make it easy for us.
The workflow will remain the same until a future update to the software. It's unlikely that we'll ever be able to mill an e.max block with a hole (meso block), but soon the hole should be milled for you as opposed to just showing you where it is and doing it manually.
No, same rules apply. I’m bonding the 2 pieces extra orally, so the spacer is around 100-120 for the cement.
