Your application’s delivery time can vary significantly depending on when you submit. If you submit during the peak of the cycle (typically the end of June/early July) the processing time on your application could be 3 or 4 weeks long. During this time period, your transcripts will be compared to the grades entered on the AADSAS application. This can take a significant amount of time especially during the peak of the application season.
AADSAS only mails out applications on Fridays and mailing can take up to a week for schools located on the west coast (AADSAS is located on the east coast). Applicants use these Friday mailing dates to compare application submission times. These are commonly referred to as “batches” with the first batch being the 3rd Friday of June and each following batch mailing 7-days after the last. This batch delivery system is frequently used by applicants and seems to be based on similar status changes occurring at the same time on the AADSAS website. From my experience, pre-dental students from the same batch typically get an interview invite at the same time. There are exceptions to this. For example, my friend and I who were both in batch 3 interviewed nearly 6 months apart for one school.
Once dental schools have your application in hand, the processing time can vary and take up to a month to acknowledge your application has been received. In the meantime, fill out any available secondary applications. If you have not heard back from a dental school a month after your application is mailed out, I would recommend confirming with the school that they have received it.
For this reason I like to approximate that some schools fall under a 3-6 week window while other schools fall under a 6-8 week window. It is best to have the mindset that all of your desired dental schools will review your application no earlier than 8 weeks after filling out your application. This way, you give yourself a specific goal that will prevent your applications completion from dragging on for weeks or months longer than it should!