There are some ppl who are holding multiple spots until May. They may drop their spots ; so, there is always hope until before the orientation.
If you REALLY REALLY like the school ( like I do : ) ), you should update your status (anything that you think it'll make you stand out) such as working volunteer at a dental clinic or increasing GPA or retaking DAT.... Also, call to talk to Dean about your status so that he can know who you are out of many waitlisted students ( but don't call him more than three times or you will annoy him ) Dr. Simonsen is very nice and helpful !
MWU will be a very good dental school. So, Good Luck ! 👍