Actually, this is exactly what I did and I got an acceptance from my top choice waiting for me the morning of December 1st.
In my opinion, it is up to you as an applicant to explain why you are more interested in dentistry than medicine. If you can explain it effectively, then it can be an asset to your application. In my personal statement I explained what I did - took the MCAT, applied to medical school, got in to several schools but became disechanted with medicine, and then started shadowing. This went over very well with the dental schools and they never once doubted my commitment to dentistry.
To the OP (lakersfan) - taking the MCAT, and getting a score like you did, that will be an asset to your application IF you can explain the "why I like dentistry more than medicine" question that you will inevitably face. And to your original question, I got a 35R on the MCAT and then scored a 29TS / 27 AA / 18 PAT. With your 33, you will have no problem with the DAT. Just study for the PAT, and brush up on some bio topics (comparative anatomy, plants, etc.) that aren't on the MCAT but do show up on the DAT.
Good luck.