Hold on...are you simply saying that you submitted your application a few weeks ago, and now you are adding your DAT scores? No that doesn't make you a re-applicant. A re-applicant is someone who applied to dental schools in a previous year. If you made a mistake, you need to fix it ASAP. Dental schools will look at your application more critically if you're marked as a re-applicant.
Also, what do you mean that you think the schools didn't view your application? If you submitted it through AADSAS, they can see your application and have an admissions file on you. You might be thinking about the fact that some schools say that they don't bother to read your application until it is complete. That's different.
Once the schools receive any part of your application, they consider you an applicant and start keeping an internal record of the materials you send them and your admissions status.