On Tue, 30 Nov 2004 10:11:25 GMT,
John Doe wrote:
There is evidence to support the role of cycle helmets in the prevention of
injuries to the middle third of the face and some dental injuries.

Even if you believe that a helmet protects your head how does it
prevent injuries to your face, jaw and dentition?

Obviously there are full-face helmets but I doubt that you could design
a study involving them when used in general purpose riding.

--
Andy Leighton =
"The Lord is my shepherd, but we still lost the sheep dog trials"
- Robert Rankin, _They Came And Ate Us_