Yeah of course, happy to help wherever I can
I had a rough start at the beginning of college (family-medical emergency) the first 2 semesters of college, but then i managed to pick up the slack and essentially pulled 3.6+ the following semesters. I went off on a limb and decided not to do any postbacc and masters and go straight for it. I submitted moderately early-ish (Early July) and my committee packet came in Mid-July. My application was completed and accepted by NYU by early August and I got the email to interview early September. I scheduled my Interview for mid-October (I think the interview went really well bc my interviewer related to my personal statement and experiences with himself) so that relatable quality definitely helped.
I think the main things that help bolster my application were my EC's. I was fortunate enough to be published in 2 research articles (one of which i was first-authored) and have 2 more under review (great conversation piece for my interview), as well as the dental internships I was involved in (both NYC hospitals) with recommendations, and then I was also scribed at Cornell Medicine was able to build close relationships with the doctors there (who also provided recommendation for me). I also TA'ed for organic chem lab (also got a rec from the head of Organic chemistry of my school and the senior faculty lab instructor), with also some extra volunteering experience outside of academia. Not saying you have to do all these things, but I think the point is taken greatly, where you want to show that upward trend (in terms of GPA) but more importantly show your drive.
So for my DATs, they were all pretty much 22+ besides Bio (18) and QR (20) which dampened my overall and TS. I think my relatively good scores on the DAT compensated for a select few of my science courses I didn't do so well during that time of rough transition.
As for the post-December interview, I think your chances are pretty fair-game! NYU's interview was pretty laid back and conversation, therefore I really think you have a solid chance. Once you do get that invite, the playing field is even, so make sure you mention why you want to drive the point home than for your decision on why dentistry and also why them. I was never the smartest guy of the room but I would work 2x as hard as others around me and I think that reflected well on my application! Feel free to pm me if you have further questions and I hope you do hear them soon enough!