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Simplicity and crown seat

 
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rich



Joined: 30 Apr 2007
Posts: 22

PostPosted: Sat Jun 16, 2007 11:50 pm    Post subject: Simplicity and crown seat Reply with quote

I am new to sealing preps for indirect restorations. I sealed my first crown prep (after temp was made and impression taken) yesterday and consciously tried to blow off the excess Simplicity as much as I can see. When it's time to seat the crown, if it appears that the crown is being held up possibly by Simplicity pooling somewhere on the prep, is there anything I can do to clean off the Simplicity or any other suggestions than adjusting the prep or inside crown? Thank you in advance for your help.
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john kanca



Joined: 14 May 2005
Posts: 6346

PostPosted: Sun Jun 17, 2007 9:14 am    Post subject: Reply with quote

Rcih

Do you wear magnification?

This could be a reason for not seeing the excess, because as thin as Simplicity is, it is easily thinned away and you can indeed see when it is there. Also, perhaps keeping the syring tip tip closer might be of value.
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rich



Joined: 30 Apr 2007
Posts: 22

PostPosted: Sun Jun 17, 2007 4:37 pm    Post subject: Reply with quote

yes, I do use loupes. When I seated the temp crown which was made prior to sealing the prep with Simplicity, it appeared that the crown was not seated completely as it was before Simplicity was applied. If this is the same with permanent crown, how do I go about possibly cleaning up the layer of Simplicity for complete seating of crown rather than having to adjust the inside of crown (there is a chance that I won't have much problem because of die spacer, but I want to be prepared)? Thank you.
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cool kid



Joined: 12 May 2005
Posts: 818
Location: chicago

PostPosted: Sun Jun 17, 2007 8:08 pm    Post subject: Reply with quote

rich, I bet if you sand blast the surface, you may be able to remove any residual simplicity and the thing should seat. I'm not sure of this, but it works when I get glaze on the margins of my cerec restorations, so I'd think it would work with this. you will just want to seal it again before seating. just make sure that you thin all the areas and get that tip closer to the prep if necessary as the king advised!
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satchdds



Joined: 10 Jun 2005
Posts: 210
Location: niagara falls, n.y.

PostPosted: Mon Jun 18, 2007 4:59 am    Post subject: Reply with quote

cool kid wrote:
rich, I bet if you sand blast the surface, you may be able to remove any residual simplicity and the thing should seat. I'm not sure of this, but it works when I get glaze on the margins of my cerec restorations, so I'd think it would work with this. you will just want to seal it again before seating. just make sure that you thin all the areas and get that tip closer to the prep if necessary as the king advised!


Good advise. Also when thinning # 2 or 3 keep your HVE next to the tooth.
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john kanca



Joined: 14 May 2005
Posts: 6346

PostPosted: Mon Jun 18, 2007 7:30 am    Post subject: Reply with quote

rich wrote:
yes, I do use loupes. When I seated the temp crown which was made prior to sealing the prep with Simplicity, it appeared that the crown was not seated completely as it was before Simplicity was applied. If this is the same with permanent crown, how do I go about possibly cleaning up the layer of Simplicity for complete seating of crown rather than having to adjust the inside of crown (there is a chance that I won't have much problem because of die spacer, but I want to be prepared)? Thank you.


I think that in this case what I'd do (presuming the Sim really is too thick) is to strip the Sim away at delivery and re-apply it.

Be certain in the future to thin it out all over the tooth. It's not hard to do but just keep a close eye on it.

What was the temp material?
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rich



Joined: 30 Apr 2007
Posts: 22

PostPosted: Mon Jun 18, 2007 10:46 am    Post subject: Reply with quote

I use Luxatemp. Now, when you suggested stripping away Simplicity, do you mean with a handpiece or with chemical means (alcohol?)? Sorry to be "mental" with these questions. Thanks.
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john kanca



Joined: 14 May 2005
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PostPosted: Mon Jun 18, 2007 2:07 pm    Post subject: Reply with quote

Either sandblasting or a bur.

What kind of prep was this? Simplicity is really thin. It's hard for me to think that it could prevent the temp from seating- those things shrink a lot.
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rich



Joined: 30 Apr 2007
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PostPosted: Mon Jun 18, 2007 3:12 pm    Post subject: Reply with quote

It was a PFM prep.
Thank you everybody for your support and suggestions.
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john kanca



Joined: 14 May 2005
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PostPosted: Mon Jun 18, 2007 4:56 pm    Post subject: Reply with quote

Next time take a little extra time to thin it out and keep the syringe close o the tooth.

Let us know how it goes.
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jasonl



Joined: 25 Aug 2005
Posts: 272
Location: Florida

PostPosted: Tue Jun 19, 2007 7:29 am    Post subject: Reply with quote

A slightly different question but the same materials.

2 patients in the last week have had post-op sensitivity after bonding/cementing with Sim and Anchor.

1 was an all ceramic crown the other a pfm with porcelain butt margins.
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john kanca



Joined: 14 May 2005
Posts: 6346

PostPosted: Tue Jun 19, 2007 8:06 am    Post subject: Reply with quote

I see no question.

I see an observation. Razz
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bj



Joined: 15 May 2005
Posts: 320

PostPosted: Tue Jun 19, 2007 7:15 pm    Post subject: Reply with quote

What are the symptoms?
I can't imagine properly applied Sim being sensitive as a result of the Sim.

Usually occlusion.
Flossing contacts ok?
Execss cement removal OK?
No SS pre-op?
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jasonl



Joined: 25 Aug 2005
Posts: 272
Location: Florida

PostPosted: Wed Jun 20, 2007 6:51 am    Post subject: Reply with quote

I don't think it was the sim I was just making an observation that even if we do everything correctly there are going to be teeth that are sensitive.

So, if someone ever tells you that they NEVER have sensitivity or they've never had a veneer fracture tell them to bugger off....
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john kanca



Joined: 14 May 2005
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PostPosted: Wed Jun 20, 2007 9:13 am    Post subject: Reply with quote

Good advice.
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