Yes, they would consider it because it is graduate level work, but they may reject the person for lack of direction or committment. There have been lots of problems in the past with medical students leaving medical school because they realized they didn't like working with sick people or didn't like the clinical aspect of the work etc., so medical school admissions committee members have become much more consciencious about ensuring they admit people who have demostrated a long term committment and sincere interest in the MEDICAL arena. This isn't to say that people can't change career paths, but it is also no small thing to get accepted to dental school (as most prospective students must show significant interest and committment) and then for someone to suddenly change their minds midway may cause some eyebrows to raise within medical school admissions committee memebers.
What would be a clear sinker, in my opinion, is if the "person" had any hint of "pre-med" before going to dental school. Especially if he/she had applied to medical school before going to dental school. And trust me, if this person had medical school interviews, they would ask a lot of questions about this.
Just my thoughts.
