Every requirement of the application must be ready in order to have the application reviewed by dental school admissions. If any part of the application is missing, the whole application is put on hold until the required pieces are submitted. This most commonly happens due to a late letter recommendation. It is highly recommended that you request a letter of recommendation very early on in the process and give the writer a deadline a few weeks prior to the AADSAS application cycle. This gives you a little safety window in the case that the individual may have forgotten to write the recommendation letter. That said, if this is no longer an option, it is alright. One of my letter writers didn’t complete the letter of recommendation until after AADSAS opened.
The key message is that you should have EVERYTHING ready to go!
If the letter is a physical copy or is a committee letter of some sort that will be mailed to AADSAS, all you need is the contact information of the letter of recommendation writer/service and AADSAS will provide you with a “Letter of Evaluation Matching Form” that must be included with the letter of recommendation. Give this form to the writer and let them know that your application is on hold until their letter is received by the AADSAS system.