Pretty much all of what you said is correct EXCEPT that it's not worth re-applying. If dentistry is what you really want to do, ALWAYS apply, your chance of getting in goes up at least 50% 😉
They do want to see significant improvements in your application, and at the very least, they need to see your CONTINUED interest in dentistry, that you have been doing something in the area in the last year.
This is my 3rd time applying, and since I haven't gotten in yet I will be starting a masters program this fall to enhance my GPA credentials. I was told that everything else was in good shape except my GPA was a little low.
Does this answer your questions?