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How to use surpass to bond chairside fabricated onlAy?

 
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gillamr



Joined: 19 Jul 2006
Posts: 2

PostPosted: Tue Dec 27, 2011 4:10 pm    Post subject: How to use surpass to bond chairside fabricated onlAy? Reply with quote

I am trying out making composite onlays using parkell's Mach II die silicone. Once I have completed the onlay, what is the best way to use surpass to bond it?
-try in and adjust restoration
-Alcohol/air abrasion the intaglio? How does removing the air inhibited layer with alcohol after try-in affect bond strength?
-do I need to use interface on the onlay?
I plan to use a self cure resin cement like maxcem. I am sure anchor is great too, just haven't tried it yet.
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john kanca



Joined: 14 May 2005
Posts: 6346

PostPosted: Tue Dec 27, 2011 5:02 pm    Post subject: Re: How to use surpass to bond chairside fabricated onlAy? Reply with quote

gillamr wrote:
I am trying out making composite onlays using parkell's Mach II die silicone. Once I have completed the onlay, what is the best way to use surpass to bond it?
-try in and adjust restoration
-Alcohol/air abrasion the intaglio? How does removing the air inhibited layer with alcohol after try-in affect bond strength?

Apply Surpass 2 and light-cure

-do I need to use interface on the onlay?

Won't hurt but not crucial for resin onlay

I plan to use a self cure resin cement like maxcem. I am sure anchor is great too, just haven't tried it yet.

You'll like it.

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gillamr



Joined: 19 Jul 2006
Posts: 2

PostPosted: Tue Dec 27, 2011 6:02 pm    Post subject: Reply with quote

Thanks John. Does removal of the air-inhibited layer from the onlay have any effect on bond strength? I thought the a-I layer was crucial to getting composite to bond to itself (in this case the onlay to the resin cement). Are there still enough unbonded molecules on the surface of the onlay after using the alcohol that the surpass 2 still adheres to the onlay really well which then creates a good bond to the cement or is the surpass 2 getting into the roughened surface from the air abrasion and creating retention in a macro-mechanical way? Not sure if my question makes sense.
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john kanca



Joined: 14 May 2005
Posts: 6346

PostPosted: Sat Dec 31, 2011 9:47 am    Post subject: Reply with quote

gillamr wrote:
Thanks John. Does removal of the air-inhibited layer from the onlay have any effect on bond strength? I thought the a-I layer was crucial to getting composite to bond to itself (in this case the onlay to the resin cement). Are there still enough unbonded molecules on the surface of the onlay after using the alcohol that the surpass 2 still adheres to the onlay really well which then creates a good bond to the cement or is the surpass 2 getting into the roughened surface from the air abrasion and creating retention in a macro-mechanical way? Not sure if my question makes sense.


The short answer is "yes."

Wink
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