If you feel that the right dentist and psychological techniques alone wont do the trick for you, have a look at the available pharmacological options for coping with dental anxiety.
These are not recommended for use instead of, but in addition to a caring dentist. Trust your gut instinct while figuring out which methods might work for you. Sedation is sometimes touted as the solution for overcoming dental anxiety or phobia, but in reality, many people dont like the idea of sedation. Scores on dental anxiety tests bear little or no correlation to the need for (or desirability of) sedation.