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Monoks
Joined: 26 Jan 2010
Posts: 10
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 Posted: Mon Oct 09, 2017 7:47 pm Post subject: Microetching prior to bonding |
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John,
What are your thoughts about micro etching with 50 micron aluminum oxide prior to using Surpass. I've heard that micro etching increases bond strengths even more. What are your thoughts? |
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john kanca
Joined: 14 May 2005
Posts: 6345
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| Posted: Tue Oct 10, 2017 5:10 pm Post subject: Re: Microetching prior to bonding |
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| Monoks wrote: | John,
What are your thoughts about micro etching with 50 micron aluminum oxide prior to using Surpass. I've heard that micro etching increases bond strengths even more. What are your thoughts? |
Smoother surfaces bond better. 50 micron Al203 consumes enamel at a fast rate and microetching of dentin does not improve bond strengths, and it can lower them.
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Toothking1
Joined: 04 Nov 2005
Posts: 12
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| Posted: Wed Nov 14, 2018 7:48 am Post subject: Re: Microetching prior to bonding |
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| john kanca wrote: | | Monoks wrote: | John,
What are your thoughts about micro etching with 50 micron aluminum oxide prior to using Surpass. I've heard that micro etching increases bond strengths even more. What are your thoughts? |
Smoother surfaces bond better. 50 micron Al203 consumes enamel at a fast rate and microetching of dentin does not improve bond strengths, and it can lower them. |
Does the increase in the surface area of the enamel after microetching not increase the bonding strength to enamel from a mechanical standpoint? |
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john kanca
Joined: 14 May 2005
Posts: 6345
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| Posted: Mon Feb 11, 2019 10:27 pm Post subject: Re: Microetching prior to bonding |
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| Toothking1 wrote: | | john kanca wrote: | | Monoks wrote: | John,
What are your thoughts about micro etching with 50 micron aluminum oxide prior to using Surpass. I've heard that micro etching increases bond strengths even more. What are your thoughts? |
Smoother surfaces bond better. 50 micron Al203 consumes enamel at a fast rate and microetching of dentin does not improve bond strengths, and it can lower them. |
Does the increase in the surface area of the enamel after microetching not increase the bonding strength to enamel from a mechanical standpoint? |
Real roughening the surface does not improve bonding. Smoother surfaces bond better than do truly rough surfaces. Gerry Greitzer and I looked at this in some depth and found that the larger the particle size for sandblasting the lower the bond strength. It's best to use bicarbonate as the medium for cleaning teeth prior to bonding.
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