You haven't mentioned your Category. Nevertheless, in 2019, under State Quota, the cut offs for various Categories for Sri Rajiv Gandhi Dental College for Government Quota seats have been as follows:

General Category:348

OBC:334

SC:293

ST: 366

Now this is 2019 data and cut offs change every year. Cut offs change every year depending on various factors such as no.of Candidates appearing for the exam, no.of Candidates qualified, top NEET score and difficulty of the exam. For a seat in this College, you should try for atleast 50 marks more than those mentioned here against your Category. To help you with your NEET preparation, we have NEET Knockout packages that you can check at: https://learn.careers360.com/knockout-neet-may/. To help you during admission and counselling, we have https://www.careers360.com/mbbs-companion.