Fair?
If you think of it in terms of Darwinism...yes it is. The ad-coms consider what they think is strong, reputable, and capable. They don't hold to their feelings and emotions about a decision (or at least shouldn't).
Perhaps those admitted played the game well, they prepared themselves beforehand, or they simply hit a stroke of good luck. Either way, they did what they had to and said what they had to for their acceptance.
Now, if you're saying "so I screwed up this year...BUT I learned from my mistakes and look at me now!"
Think about the ones who have not screwed up, learned from others' mistakes, and took the time and effort to prove they're everything the dental society wants them to be.
I was in the same position as you...and used to be bitter (only towards one school though). I messed up my entire sophomore year...BAD. But I bounced back, hit the ground running, and passed everyone who pulled away from me. 1st time I applied...I got only one interview. ONE!
Round 2!
I applied again...and only to schools that I felt fit me. I get many more interviews...less rejections, and some waitlists. No acceptances yet. On top of that...I'm a New Jersey resident, and an alumn of the Ad-Com's alma mater. However, they want to see more proof of my abilities - delay my interview, and fill up spots before I can even show them what I am. Rejection. "Peter, try again next year...you'll be in for sure. It's just we filled up before your interview, and we can't offer any more acceptances. BLAH BLAH BLAH!"
Was that fair? For a while I thought "HELL NO!" But I got over myself, and stepped back. I fooged up major in the past, and it's understandeable that UMDNJ wants to make sure I have the potential before inviting me to the interview.
However, other schools saw my potential, and I played my cards right. I took my strengths and resources and pooled them to those willing to play with me.
So is it fair? It depends on how you look at things. Different schools have different wants and needs. Just like girls (and boys). We all have the ideal model...standards, if you will. Two girls could be diggin you...and girl 1 is super hot, fun, caring, supportive, and smart, but she once screwed up with her ex in some way...and you know about it. She's learned her lesson, and will never do it again. Girl 2 is the same, but she never screwed up.
Girl 1 approached you first, and you guys went on a date. Girl 2 comes into the picture, and your fate is based on what you feel is important. Do you waitlist girl 1 or do you accept her? What's fair? What do YOU want?
That's pretty much along the same lines of the ad-coms. Hmmmm...does this make sense? I'm kinda tired from a long day.