Give it a shot! With a bottom rank, it will definitely not be an easy road sorry to say - that is probably the number 1 thing these programs look at first. Anecdotally, I just went through this process as a 2014 grad with a middle-class rank, and it was pretty tough overall. I did research for the past 2 years part time in addition to my full time practice to get some good research experience & something for the resume, did great on the GRE, and I still only got 2 interviews out of the 35 schools I applied to.
I absolutely do not mean don't apply, I just mean you really have to be dedicated to want to do it and to bolstering your resume. In my opinion, what WOULD set you apart would be to nail the ADAT. This would show that even though you've been out of school, and even with the lower rank, you are book-smart enough to keep up with the program. That plus your real world experience would be a great combo.
The only other thing I could see being tough to manage is getting letters of recommendation. In my case, I got them through my research volunteering at my old dental school. I would think about who you would get to write your letters.
Do you happen to remember what schools did not so much appreciate the work experience? Sometimes I do wish programs were more forthright about their various hidden cut-offs.