My son just had his two bottom teeth removed 3 weeks ago for the exact same reason! I left them as 'shark' teeth for almost 6 weeks hoping he could wiggle them loose. We saw no improvement at all, so I finally made the appointment for their removal.
OMG his two permanent teeth are so far back they are almost unusable. Unfortunately for him, as soon as his 6 year molars are in he will need an ortho consult to fix. Granted the dentist assured me even if I had come in earlier he would have had the same result, because of crowding and is something about the shape of his jaw. There is stil apart of me that wonders if I brought him in earlier they wouldn't have been that bad
Bright side he wasn't left tooth less since the teeth were already in :( Downside based off xrays he will most likely have to have the next 4 bottoms removed as well. Its still a wait and see approach tho'!!
My son was 6, they didn't do any laughing gas or anesthisia. They did a local, and then an injectable lidocaine. My son did great. He didn't even cry.
I DID not tell him, because I wasn't even sure if they were going to remove them. I told him very matter of factly that I was not sure what they are going to do. It will be up to the dentist to decide. For my son, its better if the medical professional tell him whats going on. This conversation was done on the car ride to the dentist. Less time for him to process is better for us.
He did question if it would hurt. He had just had a blood draw 3 days prior so I told him it wouldn't hurt anymore than that. The most pain would be the 'shot' to numb his teeth.
He did great. You'd be surprise how well they can do.