Bear in mind that dental school usually involves the assumption of tens of thousands of dollars of student loan debt. Currently there are 55 Schools of Dentistry in the United States.
Most students apply to more than one school.
You should pick the schools that interest you and, from that school listing site, visit individual school web sites for school-specific information on admissions procedures. For example, Marquette University in Milwaukee is Wisconsin's only School of Dentistry, so many UW Oshkosh students plan to apply there. Dental school applications can be lengthy documents. The DAT can be taken almost any day of the year through a computerized process. The turnaround time for your DAT score is reported to be about two weeks.