I Keep Biting My Tongue- Teeth Are A Little Sharp

I keep biting my tongue- teeth are a little sharp in the back molars on one side of mouth and my dentist doesnt believe in grinding down any teeth- he says it will change my bite and screw something else up in my mouth- still have a divet in my tongue- been a week and still have the lose skin- will it fall dry up and fall off with time? Should I find a dentist that could do a little grinding?