"Applicants Holding Positions at Multiple Institutions. Starting April 1, dental schools report to ADEA AADSAS the names and identification numbers of candidates who have paid a deposit, hold a position in a dental school entering class, or both. After April 5, ADEA AADSAS reports to each institution the names of candidates for its entering class who hold acceptance(s) at additional institutions. A dental school may rescind an offer of admission to a candidate who has paid deposits to or holds positions at multiple institutions. If the dental school chooses to withdraw this candidate from the entering class, the dental school must give the candidate a minimum 15-day notice."
ADEA traffic rules from 2010