Should I sacrifice my braces to attempt to become a pilot in the RAF?

[Romeo E.T.]

excuse my ignorance, but how does wearing braces affect the selection process, ?
What effect does braces have on the mental and physical ability, how do wearing braces affect the training process ?

and by the time that the selection process is done and the actual courses start, the time of braces treatment might be over anyway.

educate me, but this sounds a bit draconian