Funny thing is he does have fake teeth. If you watch I believe it was after the Oscar or maybe the Eastman fight he looks at a member in his entourage and whispers "my teeth, my teeth" The camera pans away then comes back to him just getting done putting them in. If he does have a bridge why not get it for the front teeth as well. Anyway maybe when he is finally complete his career he will fix his grill up.