If these syptoms are real you may want to go see an occupational therapist.
Really, stop posting on here and seek professional help - it would be good for you and good for all of us.
have you seen a doctor?
before you or anyone here makes a diagnosis as either bull or real, you need to see a profesional to diagnose what you have, it seems to me that your condition might be anxiety related, and if someone certifies that, then you have some permanent disabilty or inabilty to practice dentistry you might have some luck.
now is there something else you're not saying here?
it started all of a sudden after you graduated and were in a residency program? did someone kill your self esteem? or have you become completely unable to be in a dental office due to unmentioned circumstances?
i know that when i broke up with my ex, after graduating from dentistry, i could not focus on any studies, including turning down an invitation to do a specialty program in mexico where i studied for ortho, now after 10 years in the fitness field and later in real estate combined( need i say more), i am wiser and more determined to actually finish my licensing needs to practice dentistry here in the U.S., you are one step ahead but i'm sure there are things that stop you from continuing to practice, sort these out, it might take you a while, but if you finished dentistry then i feel that not only are you smart enough, but also capable enough to learn many trades that require hands on skills.
but do you really want to forfeit the profesional prestige that goes with practicing one of the more respected careers here in the U.S.?
i can tell you that i did financially well in the fitness field, and became very well educated in it, for that matter, but people as a whole never respected those skills and training that i acquired.
then i went into real estate a few years back, and earned quite a lot of money, but the respect once again was not there, even though once again i have learned a lot of things and gone thru extensive training, i would get the question, how much are you making on this loan and real estate transaction? to me this was the ultimate lack of respect from people.
so can you be retrained? probably yes, can you focus? well fix whatever happened, ad i'm sure you will be able to move on and learn something new, but whatever you do, try to remember why you are doing it, and do you want to do it in some capacity or continue doing it for x# of years?
look forward and make a new plan!! good to luck to you!!