Are you sure? They state the following:
Post E-Submission Changes
After you e-submit your completed ADEA AADSAS application, you may only make changes to the following items until February 15, 2014:
Biographical Information
Canadian DAT Scores
Designate Additional ADEA AADSAS Dental Schools
Progress/Planned Coursework (one-time changes allowed during the Academic Update)
New Fall 2014 Term Courses Completed (one-time changes allowed during the Academic Update window only)
Password (not transmitted to your designated dental schools)
Withdrawing Your Application
I've seen others post that you can but the above makes me somewhat leery.