no
buy a new mouth guard
You call it... An external mouth guard.
People can breathe through the mouth. It may be uncomfortable to do so over the long haul, but it is possible. You would have to guard against dry mouth.
You take them out because if you keep them in and have a mouth guard in the denture cuts your mouth all up.
Yes, if the sperm is still alive there is the possible chance she can get pregnant.
no
teeth
Yes you leave them in you mouth
arthur wood
wallmart
Mouth Piece, its used as a guard for your teeth.
a mouth guard