Quit smoking all together, and get a second opinion if you are not comfortable with the oral surgeons decision not to biopsy. I had my dentist look at my tumor, perform a brush biopsy (which came back inconclusive), and tell me it was "probably nothing to worry about". The ENT that dx'd my cancer said "I'd be really surprised if it comes back positive". My primary care doc called it leukoplakia and said "probably not cancer, but needs a biopsy". Guess what?!?! I had cancer!!! I'd personally have it biopsied, but I do not know what it looks like, just know my experiences. A couple months had passed before I was finally dx'd (from when I first had it looked at). I was not a happy camper to say the least. Hopefully this is not the case with you, but I prefer to err on the side of caution!!! Best wishes to you!!!