I´ve recently had to change dentist and had a full check up. Although x-rays show nothing, the dentist says he can see decay under my sealants (put on more than 20 years ago) and I should have at least one mini filling, maybe more, depending on what he finds under the first sealant. I don´t understand how if the x-rays show up no decay why I need work. So far, I have perfect teeth with no fillings and I´m not sure if this guy is just maintaining his lifestyle. What do you think? He also wants to smooth over some rough edges, something my previous dentist recommended against.