The first thing that you need to do before any doctor can be of any help us to quit the Habit immediately because you realise how dangerous it is. The next prudent step would be for a proper clinical examination with an oral pathologist for an evaluation of the case so that an appropriate diagnosis can be made. The right treatment options can be suggested only after the right diagnosis has been made. You can search for the specialist in your vicinity using Practo and visit them as soon as possible. Alternatively you can post clinical photographs of the case for an online discussion with a specialist on Practo. Regards.