In article , Grimly
Curmudgeon writes
On Mon, 24 Oct 2011 19:09:48 +0000 (UTC), Jules Richardson
wrote:

After toothpasting things are definitely better - I put about 500 miles
on it on Saturday and there was quite an improvement.

Wasn't Pepsodent, by any chance, was it?

http://www.phrases.org.uk/meanings/422100.html
Ah! - I remember chanting; "you'll wonder where your back teeth went if
you clean your teeth with dry cement"*

*DIY content.
--
Chris Holford