Hi aspirant,

You need to score at least 520 plus marks for getting bds government college in Kerala if you belong to obc catagory.

Here's the list of some BDS college in Kerala with there cutoff marks for OBC:-

Government Dental College, Thrissur - 525

Government Dental College, Alappuzha - 546

Government Dental College, Thiruvananthapuram - 541

Government Dental College, Kottayam - 517

This information is based on previous years cutoff and the cutoff marks change every year. It's depends upon number of students that appeared in examination, number of seats available in colleges, difficulties of question paper,etc.

You can use neet college predictor to know which college you may get with your marks. That is mentioned below:-
https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer