Fear of dental chair

I'm not sure if this is a real phobia or not but whenever I see a dental chair I have an anxiety attack. It doesn't matter if its a picture or on TV I just can't look. At first I thought it was just a fear of the dentist himself or his surgery but its the chair itself.

I went and saw a psychologist who got me to work on it in slow stages like making the appointment - going there before the appointment - sitting in the waiting room - even got to the stage I walked towards the surgery but as soon as I saw the chair I panicked. Even though I knew the dentist wasn't going to do anything. Something I had arranged before hand.

Has anyone else experienced this and any suggestions? My teeth are in dire need of treatment!!!!