Milling and casting polymer ...

[French Cadman]

Hi all ,

I make milling tests in polymer and casting CoCr, it's an encouraging start !
This is an economical and fast solution
Accuracy is good, I will put more pictures later ...

All the best !

 

[rkm rdt]

Better than Straumann.

 

[French Cadman]

Of course !

 

[zero_zero]

Interesting idea Mr. Frenchy...

 

[ParkwayDental]

Won't CrCo cause a reaction and corrode the Ti implant over time?

 

[aqdental]

hi Cadman, what are you using for casting, vacuum/pressure?

 

[French Cadman]

Hi all,


Just a torch and GC Fujivest 2 !
CoCr is not a problem on implant, ask to Bego , they sell abutments in CoCr (wirobond MI+ and wirobond C+)

http://www.bego-implantology.com/en/produkte/detail/path/sub_tecplus_wirobond_mi_pfosten//

if you have a perfect fit there will be no problem (no rotational movement !)


I will offer my first abutment to Straumann France director !!!

With this technique, money will return in small labs ....

 

[Gdentallab]

Won't CrCo cause a reaction and corrode the Ti implant over time?

NiCr will . But CrCo will not.

 

[Marcusthegladiator CDT]

Mill some Peek and build some custom temp abutments, awesome.
That IS really cool. I'm just not sure if I want to rely on the casting to be as precise as the milled abutments...

 

[French Cadman]

I'm just not sure if I want to rely on the casting to be as precise as the milled abutments...

That's what I thought before trying casting …..

 

[Tayebdental]

French Cadman, What do you use for design? ( Exocad implant module software)!!.

 

[zero_zero]

French Cadman, What do you use for design? ( Exocad implant module software)!!.

It takes quite some tweaking to output that with 3sh@pe...

 

[French Cadman]

To do that, you must have the best software to do the best files !
So, I use Exocad implant module (DDG , ZZ or medentica data base) and .................Wok NC implant module !
On a small milling machine you can mill stl file but for the abutment casting technique , it is not perfect ...
So, to be perfect ,I do my stl file on exocad and then I'll adapt the corrected file WNC (yellow) on the Cam .
It's the same whith 3shape ....
I don't know on SUM 3D if you have the same module (???) not many users in France ...
It only improves the connection zone, the screw hole and the stop with a specific milling program ( 25 minutes and 8 tools for wax and polymer ).

 

[French Cadman]

Hi !

If you don't have polymer , you can use WAX , good wax like this one , it's perfect !

Good luck !

 

[rkm rdt]

WOW! That looks like fun.

How do you get a polished or smooth interface surface like the original bases?

Do you blast with glass beads after they are cast?

 

[French Cadman]

You're curious my Canadian friend , it is a good thing !

You can blast with glass beads as you said or electrolytic bath if you are an "expert"
or use the mass finishing (tribofinition en français) , that's what I'll try ....

 

[rkm rdt]

I can't wait to see the finished pictures.

 

[zero_zero]

You could also try a very fine grain investment then porcelain stripper to get rid of the investment without using the sandblaster...it comes out shiny. ..we're doing this for UCLA abutments. ..

 

[CoolHandLuke]

Mill some Peek and build some custom temp abutments, awesome.
That IS really cool. I'm just not sure if I want to rely on the casting to be as precise as the milled abutments...

i'm not sure why you would find that to be so different from milling a wax coping to be cast in pfm.

its very much the same process. very much the same level of detail.

 

[DMC]

Looks like fun!

Yes, SUM3d also have implant geometery replacement feature.

We created our own library and individual milling operations for each type/size implant.

Same/same...

It may be never that CrCo will be accepted in the USA?