Not true. You would still interview in February because the school doesn't know where you've accepted until May 1st.
Not true.
Exactly.
Before May 1st you can commit to as many schools as you want. After that AADSAS gets information from the schools about who reserved a deposit and sends information about multiple spot holders to the schools.
Straight from the ADEA website:
f) Applicants holding positions at multiple institutions. Dental schools participating in AADSAS will report to AADSAS by May 1, the names and identification numbers of candidates who have paid a deposit and/or hold a position in their entering class. After May 5, AADSAS will report to each institution the names of candidates in their entering class who are holding acceptance(s) at additional institutions. Dental schools will have the option of rescinding an offer of admission to candidates who have paid deposits and are holding positions at multiple institutions. Dental schools with candidates holding multiple positions on May 1of the year of admission will give such candidates a minimum 15-day notice if they choose to withdraw them from the entering class. This policy will be evaluated every two years by the ADEA Section of Dental School Admissions Officers to assess its impact on applicants and dental schools and provide applicants a reasonable time-frame to complete their enrollment process.
Emphasis is my own. So if you're going to hold more than one spot, make sure by May 1st that you update schools and give up your extra spots.
Regarding the part in italics, does that means that the schools give you fifteen days to commit before kicking you out?
And what do you guys think of holding multiple spots?