Replying to 720 fail

Ok so me and my friend were at our local hill (COP) so i could learn to 540.  I did it on my scond try on this 5 foot jump.  So feeling pretty confident and making a bet with my friend, I decided it would be cool to 720 mute grab a 10 foot jump.  So i tried to 720 it first and landed on the knuckle of the jump, so next run started a bit higher and didnt speed check and span a bit harder.  I ended up over shooting the jump and span 810, and kneed my self in the face.  Injuries are 2 loose teeth that will need root canals, bruised and cut gums, bruised my left leg pretty bad and got a concussion.  But I still finished my line.  So i am wondering if anyone ever kneed them selves in the face?  Because my dentist said it happens pretty often.