I've never had a cavity in my whole life. Upon my first visit to Champaign Dental Group, I was told that I had two cavities. Due to some new insurance issues at the time, CDG agreed to wait to fill them until the insurance would cover the fillings. I went home and a few days later, typed CDG into Google to get reviews. I admit, I was suspicious about the fact that I suddenly had cavities. Well, surprise, surprise....MANY people have been told they have cavities (some 10 or more) and later find out that they do not.
I am terrified of needles. So, most of my fear around getting cavities filled is the giant needles they use to numb your mouth. I was beyond relieved when I got to leave that day...and then enraged that they would've subjected me to said needles AND drilled into my teeth when there was no cavity.
I went to another dentist for a second opinion. Lo and behold: No cavities. I was told that CDG often finds "cavities" where there are none, because they have very high tech, sensitive equipment that measures tooth density. When the equipment says there's a weakness in the tooth, CDG takes that as being a cavity, when it could just be a weak spot to be strengthened with fluoride. As the other dentist says, "Why try to fix something that isn't broken?"