MrCuddly, While I'm not so sure a tooth can't have several cavities over time that are filled separately, what you're describing in not an aggressive dentist but a thief. When I was very young this happened to myself and two siblings. BTW, my Mother was on welfare at this time. I could never understand why until 20 years later my uncle refereed this dentist to a mother who was on assistance. She couldn't believe how many cavities he wanted to fill in her child's mouth so went for a second opinion. The second Dentist didn't want to fill any. I reported him on the New Jersey state insurance fraud website and he still practices today.