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    Emax with metal post

    Discussion in 'Zirconium' started by Praven videssh, Oct 11, 2017.

    1. Praven videssh
      Amused

      Praven videssh New Member

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      I got a emax layered case with metal stump.
      which ingot should i use to cover metal stump?
       
    2. ps2thtec
      Question

      ps2thtec Well-Known Member Donator Full Member

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      I've had a few eMax recently over a post. I cast post in a ceramic alloy and gave it a layer of opaque.
       
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    3. Contraluz

      Contraluz Active Member Full Member

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      Depending on the thickness, at least MO, if not HO (with little room available).
       
    4. Contraluz

      Contraluz Active Member Full Member

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      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.

      M
       
    5. sidesh0wb0b
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      sidesh0wb0b Well-Known Member Full Member

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      how much room do you have?
      ive covered metal with LT ingots, MT ingots, MO, and HO.
       
    6. ps2thtec
      Question

      ps2thtec Well-Known Member Donator Full Member

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      Not sure what you mean by "edging". And weakness as in the bond? to the metal.
       
    7. Patrick Coon
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      Patrick Coon Well-Known Member Sponsors Full Member

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      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.
       
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    8. CatamountRob
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      CatamountRob Banned Member Full Member

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      Wow. No woder Ivoclar keeps you around. I've been scratching my head trying to figure out what he meant by "edging"....
       
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    9. Patrick Coon
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      Patrick Coon Well-Known Member Sponsors Full Member

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      Yep! "No woder. . ." :D
       
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    10. Contraluz

      Contraluz Active Member Full Member

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      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.
       
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    11. Contraluz

      Contraluz Active Member Full Member

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      Laugh Sorry guys, english is not my first language... :Hello:
       
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    12. Patrick Coon
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      Patrick Coon Well-Known Member Sponsors Full Member

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      No worries, M! English is my only language, and I still have problems with it!
       
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    13. JMN
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      JMN Christian Member Full Member

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      Wouldn't have know if you hadn't said it. Yer speekin et purty gud.
       
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    14. kimba

      kimba Active Member Full Member

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      I thought it must be like rimming, but wondered why he bought it up here
       
    15. Praven videssh
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      Praven videssh New Member

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      The post is cemented in patients mouth
       
    16. GarryB

      GarryB Active Member Full Member

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      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?
       
    17. rkm rdt
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      rkm rdt Well-Known Member Donator Full Member

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      I make a zirconia crown cut back for emax ceram.
      solved.
       
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