@_K9_ is absolutely right! Yes if you get a chance to work with one of the Professors, that would be great but if you`re emailing them just for the purposes of you having the chance to get accepted in to Advanced Standing Program, then yes it is going to depict a negative image. Let your hard work and stats speak! But again I am not gonna lie, I know ppl who observed or knew Professors through lets say other alumni or dentists and they got accepted in to Advanced Standing! Yes contacts are gold mine but how you make them is to be given importance!!!!!!