Hey dear, cutoff  varies every year, if you see the last year's cutoff which went very high that even students getting 500 marks were unable to get a govt. Mbbs seat. So, with 220 marks is you want bds being obc candidate than you have chances of getting it in an average dental college for sure. You can also use college predictor through this link:

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer