re: I have a brown spot on my tooth. Any advice?

Go to the dentist. I have another tooth problem. I smoke a lot and my teeth are yellow like a banana. One my friend have bought some machine on https://bimedis.com/search/search-items/dental-lab-equipment so it can whiten teeth and there is no neccessary to go to the doctor. I was thinking to buy such one 'cause I am scared of dentist + it will be more cost effective.