Dr. Kulkarni,
If you've had a strong upwards trend in your grades and strong DAT scores (20+), the schools seem to be more willing to look past an unfavorable GPA. They generally want to see additional upper division coursework in the sciences to prove that you really can succeed in a tough dental curriculum. If they can see that you are a serious student, it will help your situation greatly.
I had bad grades during my first 3 semesters of college which left me with a 3.09 overall and 2.6 science gpa. I had a stronger performance during my last 2.5 years of undergrad, and am currently taking some post-bacc courses (with a 4.0 GPA). I did pretty well on the DAT (disregarding the PAT), and have been offered 3 interviews so far. I am proof that if you: 1) apply early, 2) do well on the DAT, and 3) do well in your upper division work, that dental schools will at least give you a look. (Now, let's just hope that this translates into an acceptance.)
Good luck to you! 😎