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Wed Feb 04, 2009 7:40 am  |
It seems to be a good idea to avoid UV-light when bleaching teeth, or protect your skin during the bleaching procedure.
A new Nordic study shows that UV light-induced tooth bleaching damages skin and eyes up to four times as much as sunbathing.
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ScienceDaily (Feb 4, 2009)- UV-enhanced tooth bleaching is not only a con, but is dangerous to your eyes and skin, says a Royal Society of Chemistry journal.
The light treatment gives absolutely no benefit over bleaching without UV, and damages skin and eyes up to four times as much as sunbathing, reports a study in Photochemical & Photobiological Sciences.
Those looking to match Tom Cruise's glittering pearly-whites would be better off ignoring claims of better bleaching with UV light treatment. The treatment is at least as damaging to skin and eyes as sunbathing in Hyde Park for a midsummer's afternoon - one lamp actually gave four times that level of radiation exposure.
And as with sunbathing, fair-skinned or light-sensitive people are at even greater risk, said lead author Ellen Bruzell of the Nordic Institute of Dental Materials.
Bruzell also found that bleaching damages teeth. She saw more exposed grooves on the enamel surface of bleached teeth than on unbleached teeth. These grooves make the teeth more vulnerable to mechanical stress.
Tooth bleaching is one of the most popular cosmetic dental treatments available. It uses a bleaching agent - usually hydrogen peroxide - to remove stains such as those from red wine, tea and coffee, and smoking.
UV light is claimed to further activate the oxidation process, improving bleaching efficiency. The authors of this Photochemical & Photobiological Sciences article say there is very little substantive evidence to support this claim, and their new study finds no benefit to using UV light.
http://www.sciencedaily.com/releases/2009/01/090129090214.htm
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Female, 40, Norway. Normal/dry skin, starting to see signs of aging. Staples: Glycolic acid cleanser, SkinCeuticals Phloretin CF, Revaleskin, NIA24. |
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Thu Feb 26, 2009 8:35 pm |
| is an ionic toothbrush along the same line? |
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Thu Feb 26, 2009 8:53 pm |
| Septembergirl wrote: |
A new Nordic study shows that UV light-induced tooth bleaching damages skin and eyes up to four times as much as sunbathing.
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WOW...that is scary. Thanks for sharing! |
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No longer answering PM's due to numerous weird messages. |
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Thu Feb 26, 2009 10:20 pm |
| We should avoid all UV. |
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Fri Feb 27, 2009 6:22 am |
| bciw wrote: |
| is an ionic toothbrush along the same line? |
No. It's just the UV-light that is harmful.
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Female, 40, Norway. Normal/dry skin, starting to see signs of aging. Staples: Glycolic acid cleanser, SkinCeuticals Phloretin CF, Revaleskin, NIA24. |
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Fri Feb 27, 2009 10:47 pm |
| I don't trust that blue light that dentists use to set bonding either. Even if you're wearing the goggles, I try and shut my eyes when it's being done just to be on the safe side. |
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Medium toned , oily skin, lover of sunblock and anti-ageing products & supplements. On a perpetual quest for the perfect v. high PPD, non greasy sunblock! |
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