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MrSae

MrSae

Member
Full Member
Hi to You,

I was told by our technician that there is a method where you layer the ceramic onto a model which is out of investment material. There is no substructure, you just layer the ceramic onto the stumps.

I was not able to find such ceramic material from the manufactures Ivoclar, Dentsply.

Do you have idea about this?
 
Car 54

Car 54

Well-Known Member
Full Member
And this is why they came up with pressed ingots/ceramics, to get away from all the time, labor and any real ability to do add ons without crossing your fingers and hoping that nothing's going to distort or a margin roll, even if you used a low fusing add on kit.

Best thing to do is reprimand that tech for even bringing up the "R" word :)
 
sndmn2

sndmn2

Well-Known Member
Full Member
And this is why they came up with pressed ingots/ceramics, to get away from all the time, labor and any real ability to do add ons without crossing your fingers and hoping that nothing's going to distort or a margin roll, even if you used a low fusing add on kit.

Best thing to do is reprimand that tech for even bringing up the "R" word :)
I never learned refractory technique..I did a load of them on foil for about 15 years.. I wish they would bring back those make-over shows..
 
Car 54

Car 54

Well-Known Member
Full Member
I never learned refractory technique..I did a load of them on foil for about 15 years.. I wish they would bring back those make-over shows..
And I could never get the hang of getting the margins burnished properly, especially if the Dr had sharp corner and edges (my chipping them). Also, of anticipating the final shade with a silver background. You really had to trust and know your porcelain system in knowing what it was going to look like once you took the foil out.

Who was the foil guru back then, Jason Kim, who used a orange stick to burnish the margins in?

Did you ever do any inlays or onlays using refractory?
 
rkm rdt

rkm rdt

Well-Known Member
Full Member
I did everything on refractories since the days of optec. The fit once dialed in was exceptional.
The ability to create thin veneers was the best advantage. I learned a lot about the properties of porcelain doing refractories.
 
Tayebdental

Tayebdental

Tayeb S. CDT
Donator
Full Member
Thank The Creator for cad/cam milling and pressing, I don’t miss the optec era, nor do I miss the Platinum foil either.
 
sndmn2

sndmn2

Well-Known Member
Full Member
And I could never get the hang of getting the margins burnished properly, especially if the Dr had sharp corner and edges (my chipping them). Also, of anticipating the final shade with a silver background. You really had to trust and know your porcelain system in knowing what it was going to look like once you took the foil out.

Who was the foil guru back then, Jason Kim, who used a orange stick to burnish the margins in?

Did you ever do any inlays or onlays using refractory?
I did a couple inlays but that was it. For foil its a 3 or 4 bake process. 1st fire was od, And of course the foil would always warp when you pulled it off. Next firing was body. And again the foil would warp when pulling it off. But when s wedging with your hands the next time and doing a final build it was usually stiff enough at that point for the foil not to warp when you pulled it off. . Sometimes I did a 3rd body bake before the final firing. I use to throw them in cold water before trying to pull the foil. For some reason I always felt it made it easier that way. It's been a couple years since I have actually done one.
 
doug

doug

Well-Known Member
Full Member
I did a lot of refractory veneers. Started with Optec. I wish I had learned how to do foil veneers, they seemd to be so much faster to fabricate. We used the Unipin die system with made it a lot more fun.
 
JMN

JMN

Christian Member
Staff member
Full Member
We used "Bego Stumpf Material" as the refractory model. Can't even find it on Bego's website now.
I'm sure to be spelling Material wrong.
 
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