Problems of Dentist
Most common problem of a dentist is the patients "Dental fear". Fear of "the dentist" or "dentists" is pretty common. If you've had bad (or not-so-great) experiences with dentists in the past, it is very easy to make the assumption that dentists, in general, are bad people. There's a theory called "construct theory", which states that we have a tendency to ascribe certain attributes to a group of people who have something in common (in this case, dentists), based on our experiences of this group. However, these constructs (e. g. "evil" as opposed to "kind", "bad" as opposed to "good" and so on) tend to be based on a very small number of observations.
Even if you've had the misfortune of running into 10 dentists, none of whom was particularly kind and caring, and one or two of them who were downright horrible, this does not mean that ALL dentists conform to this "pattern".