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Simplicity and PFM crowns
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cool kid



Joined: 12 May 2005
Posts: 818
Location: chicago

PostPosted: Sun Sep 18, 2005 9:34 am    Post subject: Reply with quote

what do you mean that zoe is not to be taken lightly for veneers? do you think that these veneer temps(2 together) will come off at the seat appointment since flow or resin temp cement was used to hold them in after a coming off a few times with temp bond?
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john kanca



Joined: 14 May 2005
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PostPosted: Sun Sep 18, 2005 9:39 am    Post subject: Reply with quote

No, I mean that there is always some effect of ZOE on resins and for veneers ZOE is an inappropriate use over resin. Best to start over.
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jasonl



Joined: 25 Aug 2005
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Location: Florida

PostPosted: Tue Jan 08, 2008 8:10 pm    Post subject: Reply with quote

2 short crowns.
PFM's
sandblasted intaglio of crown.
bonded crown into place with simplicity and anchor.
Both very sensitive afterwards.....
provisionals were pain free.

removed both crowns this week and re-provisionalized.

I've only had this problem with PFM's that I've attempted to bond.....near zero sensitivity on composites and ceramics.

???????????
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john kanca



Joined: 14 May 2005
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PostPosted: Tue Jan 08, 2008 11:03 pm    Post subject: Reply with quote

What kind of sensitivity?
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jasonl



Joined: 25 Aug 2005
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PostPosted: Wed Jan 09, 2008 7:23 am    Post subject: Reply with quote

good quality sensitivity.


thermal mostly.
chewing occasionally.

in the essence of trying to take all the responsibility for the problem I removed all occlusal contact (1 patient needed anesthetic). 2 weeks later there was still no resolution.

Maybe waiting longer is the answer but that is a hard one for me to suggest and for the patient to accept.
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brad



Joined: 13 May 2005
Posts: 346
Location: Cincinnati, Ohio

PostPosted: Wed Jan 09, 2008 10:45 am    Post subject: Reply with quote

I was wondering how anchor w/ a PFM might comapre to a RMGI cement as far as bond strength (w/ reactivity to metal)-- i.e. if you gain that much by using anchor in these situations. I am intersetd to hear why there might be sensitivity in your case.
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john kanca



Joined: 14 May 2005
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PostPosted: Wed Jan 09, 2008 12:08 pm    Post subject: Reply with quote

jasonl wrote:
good quality sensitivity.


thermal mostly.
chewing occasionally.

in the essence of trying to take all the responsibility for the problem I removed all occlusal contact (1 patient needed anesthetic). 2 weeks later there was still no resolution.

Maybe waiting longer is the answer but that is a hard one for me to suggest and for the patient to accept.


Were the preps sealed when cut?

I think I'd recommend apply two layers of Simplicity or use Surpass if you have it.

Not sure why you're having a problem.
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jasonl



Joined: 25 Aug 2005
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PostPosted: Wed Jan 09, 2008 3:31 pm    Post subject: Reply with quote

preps were not sealed when cut.
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john kanca



Joined: 14 May 2005
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PostPosted: Wed Jan 09, 2008 4:42 pm    Post subject: Reply with quote

You might have better luck sealing at prep visit and then again if you choose to bond them in subsequently.
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jasonl



Joined: 25 Aug 2005
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PostPosted: Thu Jan 10, 2008 7:37 am    Post subject: Reply with quote

thanks.
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