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bonding metal to metal

 
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Pcus



Joined: 17 May 2005
Posts: 434
Location: toronto

PostPosted: Mon Nov 19, 2007 9:35 am    Post subject: bonding metal to metal Reply with quote

I am doing a repair to an existing bridge,

I am putting a telescoping crown over the metal framework of a bridge in a pontic area. essentially bonding metal to metal here.

What I want to do is sandblast crown and framework, sim 2 , both surfaces, cure and cement with anchor. I should not have to place an additional layer on uncured sim on either of these metal surfaces..Correct?

If I used Sur, instead, I should use cured sur 3 on each sandblasted surface and place anchor and seat. Also Correct?
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Ekrause



Joined: 11 May 2005
Posts: 782
Location: I'm here now.

PostPosted: Mon Nov 19, 2007 10:23 am    Post subject: Reply with quote

Why bother bonding?? What's the purpose?

I'd just cement with an RMGI like Fujicem.
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john kanca



Joined: 14 May 2005
Posts: 6342

PostPosted: Mon Nov 19, 2007 10:29 am    Post subject: Re: bonding metal to metal Reply with quote

Pcus wrote:
I am doing a repair to an existing bridge,

I am putting a telescoping crown over the metal framework of a bridge in a pontic area. essentially bonding metal to metal here.

What I want to do is sandblast crown and framework, sim 2 , both surfaces, cure and cement with anchor. I should not have to place an additional layer on uncured sim on either of these metal surfaces..Correct?

If I used Sur, instead, I should use cured sur 3 on each sandblasted surface and place anchor and seat. Also Correct?


This will work.
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Pcus



Joined: 17 May 2005
Posts: 434
Location: toronto

PostPosted: Mon Nov 19, 2007 11:01 am    Post subject: Reply with quote

would fujicem be as strong as anchor and sim/sur?
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john kanca



Joined: 14 May 2005
Posts: 6342

PostPosted: Mon Nov 19, 2007 3:53 pm    Post subject: Reply with quote

No. It could still work, but no it will not be as strong.
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