My answer is that most likely no DO program will want you.
The reasoning why I would not take your candidacy seriously is because 1) You had the grades for DO school the first time around, so you either a) Wanted that MD after your name which means you see our profession as second best, or b) Were too lazy to do whatever extra work was necessary (volunteer, research, etc.), 2) You are already in another professional program, 3) You decided to take the seat from another person that may have wanted to be a dentist out of your own selfishness, 4) Considering you had a "WF," having what it takes to succeed in medical school is pretty doubtful.
If you honestly want to go to DO school or don't want to do dentistry, then you need to drop out of dental school first. Then it may take you 5+ years before someone will be willing to take a chance with you. You'll have to spin it as 1) Not knowing about DO before, 2) Saying you're really sorry that you took a dentistry seat thinking it could make you happy but dropped out because you weren't willing to lie to yourself further and 3) You will need HEAVY shadowing to prove this time you won't bail on medicine.
Honestly, this is such an uphill battle that my recommendation would be to either suck it up in dentistry or perhaps try for PA or NP school.