I have recently decided to be a dentist, and its my Junior year. Anyways, its been a good year since chem and ochem and any maths. Is it to late to start studying for the dat if i want to take it in May and score a decent score of 20+???? I believe my biology knowledge is very well rounded so basic reviewing of that material wont be a problem... Im just worried about the chem and quanitative reasoning parts of the test. Any advice would be great!

You will be fine. I graduated in 03 and took the DATs in late 04, 2 years after O-chem, 4 years after Gen Chem, and 3 years after Bio. All I did was study the O-chem reactions for about a week and some really basic bio like cell reproduction. I had decent scores and got into three schools with them. Just reveiw the basics, especially if you just took the classes this semester.