If my parents claim me in their tax return and use a 1098t can I still claim the American student deduction

No.  The American Opportunity Credit (AOC) goes to the person who claims the student as a dependent, your parents.

Furthermore, there's a new urban myth among college students that says they can get a $1000 from the government just for filing a tax form. For most of them, they simply aren't eligible. A full time unmarried student, under age 24, even if you don't qualify as a dependent, is only eligible for the refundable portion of the American Opportunity Credit if he supports himself by working. You cannot be supporting yourself on parental support, 529 plans or student loans & grants. It is usually best if the parent claims that credit. 

You cannot claim a credit if you are, or can be, claimed as a dependent by someone else.

Reference: Line 7 instructions for form 8863. https://www.irs.gov/instructions/i8863

No if your parents claim you as a dependent, you cannot claim the American Opportunity Tax Credit, even if they do not claim it.