My mouth is not opening properly only one finger is going in mouth by eating tobacco and guthka, I am not able to eat properly, my jaw is paining very much while eating food, I am also not able to eat spicy food also, is I have cancer in my mouth, whole mouth is paining, what to do?which specialist doctor I should meet, should I meet dentist or any other doctor, I live in dahisar mumbai, tell the doctor for dahisar mumbai, reply urgent please.