I went to this Dr. Dena with never having a cavity in my 25 years. He told me that I had 6 cavities. I believed him and got them filled. Six months later I went for a check-up and he told me I had another one. so I got suspicious as I all the sudden after 25 years had all these cavities and went to get a second opinion. Supposedly, I did not have another cavity.So now I wonder whether I really had those first 6 ones.