Discussion in 'Zirconium' started by Praven videssh, Oct 11, 2017.
I got a emax layered case with metal stump.
which ingot should i use to cover metal stump?
I've had a few eMax recently over a post. I cast post in a ceramic alloy and gave it a layer of opaque.
Depending on the thickness, at least MO, if not HO (with little room available).
If I am not mistaken, you should always cover your opaquer with a layer of porcelain. This due to the "weakness" of the opaquer when edging it.
Although, if you use a cement that does not require edging of the substructure, I guess you are fine.
I am curious if somebody else has more insight.
how much room do you have?
ive covered metal with LT ingots, MT ingots, MO, and HO.
Not sure what you mean by "edging". And weakness as in the bond? to the metal.
I believe he is referring to etching (assumption) and it autocorrected to "edging".
Depends on the color of the metal post. Silver colored posts (assuming no opaque and glaze) then I would use an MO / HO (possibly LT) depending on final thickness (<1mm - HO, >1mm - MO, >2mm - possibly LT).
If it is a gold post (type III or IV), then an LT will probably do it at >1.2mm or an MT at >1.8.
Wow. No woder Ivoclar keeps you around. I've been scratching my head trying to figure out what he meant by "edging"....
Yep! "No woder. . ."
Sorry for the confusion. Back when, I was told the etching gel, that is used to prepare the site for bonding, weakens the opaquer, which, in the long run, would then come loose and the crown would fall off.
If that actually happens in practice, I don't know. When ever I did a metal post, I would opaque it and then cover it with Margin porcelain, giving it the shape of a 'real' prep.
Sorry guys, english is not my first language...
No worries, M! English is my only language, and I still have problems with it!
Wouldn't have know if you hadn't said it. Yer speekin et purty gud.
I thought it must be like rimming, but wondered why he bought it up here
The post is cemented in patients mouth
I had a case come in today with exactly the same prescription, emax over gold post.
I would normally go with the HO ingot but usually find it all ends up a bit bulky. I would prefer to use yellow gold for the post and press in LT.
I have never tried casting the post in bonding gold and then opaquing but am tempted to give this case a try.
Will the dentist need to modify his seating procedure if I do this?
I make a zirconia crown cut back for emax ceram.
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