My 2 cents,
Honestly, the waitlisters...you're not in a bad situation. You're waitlisted probably at the only school that takes almost 100% of the waitlisters from the previous year. Pacific is a great place to receive your education, but it's probably one of the hardest school in the country due to the pace. Feel free to stop reading here if you're turned off by the tuition.
If Pacific has impressed you that much and it's one of your top choices; If I were you, I really would consider decline your other offers and wait for that one extra year and go relax, or take some classes like biochem, microbio, anatomy, histology, and/or physiology to help you gain a more smooth transition to dental school. BTW, those are the classes Pacific will ask you to take if you have not done so already, while you're waiting. you don't have to take all 5, but try to at least take a few.
The bottom line is,
You will come out at the same time as the other schools you got accecpted to, and you will get to have a break. It's a great trade of!!!! I would've done it all over again if I have the same choice.