I am not sure how that would put into perspectives for adcoms.
First of all, I dont even think there is a place to mention in the application that you have taken the GRE, so you might have to stress that on your personal statement or something.
Second, I am not exactly sure how adcoms will evaluate your GRE score. I think DAT is there for a reason, and thats why dental schools applicants are not taking MCAT/OAT/GRE or other standardize exams. Personally, I dont think adcoms will put much emphasis on your GRE score, but you can always call and ask.