Exocad and crown to fit clasps and rest to PD

[Tayebdental]

How can I scan a GC risin replica of clasps and rest of a partial to fit a zirconia crown and pick up the rest and clasp registration. Thanks

 

[2thm8kr]

Set up job as if you are doing a restoration on both arches. This will allow you to be able to import an antagonist into the scene as well.


Do a separate scan of the partial clasp on the model and import as antagonist using expert mode. This way you will have a working jaw to do the occlusal contacts and then when you import the clasp as antagonist you will be able to cut occlusal intersections to make the crown conform to the clasps/rests.

 

[Tayebdental]

Thanks Sam,

 

[PDC]

Dang...I'm waxing one of those up to scan right now. Never really tried to see if DW can do this...but I doubt it.

 

[rkm rdt]

Dang...I'm waxing one of those up to scan right now. Never really tried to see if DW can do this...but I doubt it.

2th is a guru.

 

[RCKSTR]

I just scan the partial as a preop. When it asks for the preop, I remove the die and place the partial on the model so it can scan under the clasps.

 

[2thm8kr]

I just scan the partial as a preop. When it asks for the preop, I remove the die and place the partial on the model so it can scan under the clasps.

That will work too. I am building a digital library of patient removable appliances to use later so I have scans of partials top and bottom to include the clasps.

 

[sidesh0wb0b]

That will work too. I am building a digital library of patient removable appliances to use later so I have scans of partials top and bottom to include the clasps.

for your next trick, tell me how to do it with 3shape

 

[2thm8kr]

for your next trick, tell me how to do it with 3shape

That's easy, sell that rig to some noob and score exocad.

 

[Tayebdental]

That's easy, sell that rig to some noob and score exocad.

You're going to get my Canadian friend Rob uneasy Sam.

 

[RCKSTR]

for your next trick, tell me how to do it with 3shape

Same thing, choose wax-up/pre-preparation when scanning

 

[user name]

Same thing, choose wax-up/pre-preparation when scanning

Agreed. Im sure 2th is the wiz here, but I always make most of my model with removable sections so I can seat the partial with the prep and adjacent areas out of the way so the scanner can see from all needed angles.

I think with 2ths way of doing it you could then cut to antagonist with out needing to wax knife it?

More than one way to skin a cat, but Ive always preferred a little fur on em.

 

[2thm8kr]

Agreed. Im sure 2th is the wiz here, but I always make most of my model with removable sections so I can seat the partial with the prep and adjacent areas out of the way so the scanner can see from all needed angles.

I think with 2ths way of doing it you could then cut to antagonist with out needing to wax knife it?

More than one way to skin a cat, but Ive always preferred a little fur on em.

I don't do pinned model work. I only work from solids or IO scans. So your way is probably more efficient for your technique. Cutting the intersection to antagonist works great, then just add a pubic hair of wax to the clasp tip contact point. My guys are saying that these are the best fitting crown to partial they have ever seated. No 3 prong pliers.
If I have the partial, I take the extra time to scan it on both sides then register it to a scan with it in place. Some extra time, but now I have it on file.

1s & 0s kick ass

 

[sidesh0wb0b]

Same thing, choose wax-up/pre-preparation when scanning

figured so, was trying to bait 2th so i could call him a one trick pony

 

[rkm rdt]

This where my Trios comes in handy.( get it ?)

I can scan a partial from all angles and then give it back to the patient.

 

[zero_zero]

This where my Trios comes in handy.( get it ?)

I can scan a partial from all angles and then give it back to the patient.

Does it read metal parts without spraying ?

 

[rkm rdt]

Does it read metal parts without spraying ?

It's not bad but I do have to spray sometimes.Clasps are a bit shinier than metal linguals.
The software will fill in any voids too.

 

[zero_zero]

The software will fill in any voids too.

That could lead to inaccuracies...kinda like you trying to patch bubbles on a plaster model only worse...AI vs brain...

 

[rkm rdt]

That could lead to inaccuracies...kinda like you trying to patch bubbles on a plaster model only worse...AI vs brain...

The software will indicate any areas of concern that have holes. It is up to the operator to determine if the specific area requires more scanning.
Certainly a margin is of greater concern than an interproximal of the opposing for example.
Specific to a clasp,software fill in probably isn't a big deal.

When I'm scanning with a dr, they will observe challenges interproximally and under distal contacts.