Hello student!

I'm very sorry to mention that with the above marks you don't have much  chances of getting a BDS seat even if you belong to OBC category since  the cutoff for this year has been at tremendous height and for securing a BDS seat as a dental medicine a demand has been very increased nowadays you need to cross a score of at least 420 so that you secure a seat since you  belongs to OBC category but you have a score of only 320 there is a lot difference in the score so they are quite not possible chances of you getting a BDS seat in the stray vacancy.

Hope this helps you!

Regards!