First off send your app fee
Schools won't even look at you app without it
After you have bribed them, then they will put you app in order and skim it. Most schools, especially comptetive ones, will look for 3 things: GPA, Personal Statement, and DAT scores.
If you meet those minimums then they will invite you for the interview.
Now, it is here where the fun begins. Your numbers really don't matter here, I think. It is a equal playing field. You have been chosen, as the select few that the school thinks is capable of handling the curriculum and succeed in dentistry, due to you motivation.
Now the school will look at your personality, ability to be amicable, and your people skills. A great application on paper can become trash if the interview goes bad (inconsistencies in what you say, trouble illustrating your message, trouble with English, bad manners, bad appearance).
Only after this will the commitee decide on your application. Usually this is right after the interview and many schools ask for your photograph for this reason so they can remember who you were.
It's a long process, but getting an interview is the main goal. After that you are almost at the finish line....or are you? I question this every day.
I hope I made some sense,
DesiDentist