bluekty
Sorry to hear this happened to you, it is most unfortunate. That being said, please try the most diplomatic means necessary to have them try to reinstate your acceptance. As others have posted already, going the legal route is your way of kissing dentistry goodbye. It doesn't matter if they were unclear, biased, etc etc, the instituition is set up such that if you try to fight the "good" fight, you lose. This is very similar to the student at Marquette that had his first year cancelled due to remarks on the internet about his class. At the time the story broke, of course the threat of suing Marquette was mentioned, with many on this site stating they had no right to do it, blah blah blah, the student will win the lawsuit. Well reality sets in and no, the instituition of professional schools always wins. And suppose you do manage to threaten LLU into reinstating your acceptance. Well now you've just given yourself 4 years of pain in a school that you had to "sue" to get into. See what I mean? OTH, suppose you lose, but now word gets out that you sued a dental school, well time to kiss your dream goodbye.
Your path of action is clear, and my comments are not meant to deter you. Please try your best to have them reinstate it and hope for the best. If it's truly your dream to be a dentist, then applying another year won't hurt that much.