From what I've heard/read, being a non-traditional student can help in the admissions process. The schools value the real world experience and the diversity we can bring to a class. There are plenty of dental students out there with stats like this, and, at Columbia, probably a few more than myself (my sense is that Columbia puts a good amount of weight on DAT scores). One great way to get a feel for that is to look on Predents.com. You can see self-reported stats from past and current year applicants, where they got in, and where they didn't.