Bryan Aspey: dental treatment to improve your guitar playing?

The last time I went to the dentist, I picked up a brochure on Invisalign, which uses a series of clear removable aligners to gradually straighten your teeth. It was explained to me that you have a start point (where your teeth are now) and an end point (a nice set of straight teeth) and a series of aligners are made to create a smooth transition between the two.

http://www.bryanaspey.com/2010/05/its-like-bracesfor-guitarists.html