11-02-2010, 08:14 AM,
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Tamara
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White coating for biomedical products
White coating that is biocompatible and it is abrasion and wear resistant?
I was wondering if anyone has come accross a white coating that is biocompatible and it is abrasion and wear resistant? I know it's a lot to ask... PTFE has the color but it can't survivie the abrazive environment of the application....
Thanks!
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11-02-2010, 02:21 PM,
(This post was last modified: 11-02-2010, 02:22 PM by Tamara.)
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Tamara
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RE: White coating for biomedical products
Actually it should be off white (the color of teeth), but the coating has to be nickel free though due to the irritation Ni causes in the mouth... How does impregnation work with teflon? Can it be combined with any wear resistant coating?
Thanks!!!
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11-02-2010, 11:45 PM,
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Tamara
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RE: White coating for biomedical products
Thanks for your answers!!
The substrate is an orthodontic bracket that goes into the mouth. The material of the bracket is CoCr alloy. The bracket stay in the patient's mouth for up to 2 years.
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11-05-2010, 03:02 AM,
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Gordon
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RE: White coating for biomedical products
Hi Tamara
to the Surface Engineering Forum.
Good to see pulaunias and djewell helping you out. Off the top of my head (prompted by djewell's post) plasma sprayed high purity white alumina topped off and sealed with a cured white PTFE coating. A bit like a white version of the expensive abrasion resistant non-stick frying pan coatings well a thought, not sure how it would work in practice
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11-05-2010, 03:38 AM,
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Tamara
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RE: White coating for biomedical products
Thank you all for helping out!!
Porcelan might not be the answer somply because the brckets have a very competitive hight, so adding anything over 10 microns is not appreciatd by orthodontis, but an alumina + ptfe night do the trick...
Thanks!
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11-08-2010, 06:33 AM,
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RE: White coating for biomedical products
Hello guys....!
Thank you for your useful information.I like this kind of post which tell us much wander full massage..!
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12-21-2010, 11:24 PM,
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jackdone
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RE: White coating for biomedical products
Dental Materials Science Liaison regular dental ceramics to metals. "Crown Porcelain," Google porcelain crown "or something similar. A problem can remember is that the ceramics and metals have coefficients of thermal expansion, so that the "white coating", including ceramics, disintegrate and delaminate during or after treatment or during use.
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