You Don't Know?
It's called a, Dentist
A dentist. (aka a mouth doctor)
An orthodontist.
a dentist or an oral surgeon
Teeth
Dentist
Horologist
a plumber.
stylist
a boatwright
No you can not fix teeth from shifting
You need professional help. Go or call a dentist.
Truthfully, that person should go to there local dentist and consult them. They are educated in how to fix problems like buck teeth. By talking to anyone else about this a person can ruin there teeth more than they already are.
Aircraft mechanic
A plumber, or DIY homeowner with basic skills.
Does what have teeth? Sorry i can not help you with these please edit and fix the question.
You talk to him. Call him, text him, or do it in person! Just talk to to him about it.
Orthodontist normaly Fix Crooked teeth and assist with braces and envisalign devices. But I know they are also trained for it in the event that a patient needs a tooth extracted in order to deal with over crowding teeth. You will need to call your Orthodontist to see if he does it.