Kugel?
"A recent study by Kugel et al, has shown that as much as 4 shades of lightness can be lost over 30 days with light-activated/office bleaching."
- Who is Kugel? A reference is needed
- Is there a technical definition for a "shade of lightness"?
-- Kaszeta 21:06, 20 July 2005 (UTC)
I agree that this part is unclear. Is it saying the rebound makes the teeth darker by four shades beyond the original lightness or just darker than the post-bleaching level?
- While I have a guess as to its meaning, a formal definition of "Fridge-door teeth" would also be nice for those not "in the profession". A Google search returns this article as the first result, and no other relevant results are found.
Pictures Please
Like many other dental articles we need to add some photos here - before and after type things. If anyone has access to these images then please post them otherwise I will try and find a link to some.
Thinning of enamel
I ran across a statement somewhere else (sorry, I don't recall where :-() that the yellowing of teeth with age was due at least in part to the thinning of the enamel, so that the yellower inner layers of the tooth could show through. I don't see anything in this article (or the other articles on similar topics) that refers to this theory, so maybe it's an urban legend. At any rate, could someone who knows the truth about this idea add something on the page about it? Thanks!
Mcswell 14:14, 1 July 2007 (UTC)
American Culture
The comment about tooth whitening being due to the spread of American culture is subjective, as are comments about white teeth being associated with youth. Unusual Cheese 15:40, 24 August 2007 (UTC)
You are technically correct. However, the XO/XB bleaching shades in the vita 3D shade guide were AFAIK created for the US market - they are shades that correlated to overbleached (unnaturally high value) teeth. Also, teeth do yellow with age (this is not subjective), so it is possible that white teeth be associated with youth.Dr-G - Illigetimi non carborundum est. 19:07, 13 September 2007 (UTC)