You have no chances of getting the govt. seat in any state in india in BDS. The govt. seat requires 500 or above marks for the admission in medical and dental courses but your marks are near to the minimum so no chnaces you have. All you can do is that you can go for the private colleges or you can choose other courses than medical and dental because of the low marks you have scored. But do not lose hope there is the field for everyone no matter how much marks we have scored. Refer the link below to know more about the other courses available than medical courses.

https://medicine.careers360.com/articles/what-if-you-dont-get-mbbs-seat-know-bright-options-in-allied-health-sciences