Hello,
Based upon your score in NEET 2018, and the previous year cutoff, chances are less for admission to Government Medical Colleges under All India Quota and state quota. You may have chances in Deemed Universities. Use NEET College Predictor to Check Your MBBS/BDS Chances in All India Quota, Deemed Universities & State Quota seat Based on Your NEET AIR
   https://medicine.careers360.com/neet-ug-college-predictor?icn=neet-clgpd&ici=qna-answer 

hope this will help you

good luck :)

• The NEET cut off varies from year to year, state to state and as well as college to college. It also depends on the Quota you are applying through as well as the Category of Admission. Government and Private Colleges have cut-offs of their own.

• Assuming you are applying through the 15% All India Quota under SC Category for a Government Dental College, the cut-off for NEET 2017 were as follows:-
• Opening Rank: 14,000
• Closing Rank: 49936
• which corresponds to a score of approximately 450-520 marks out of 720.

• However, through 15% All India Quota, you can get a private dental college because the cut offs are lower but the fees are higher approximately 1.5 lakhs to 4 lakhs per year. You can also apply for 85% State Quota as your cahnces are better at state quota. This year the cut off marks are expected to rise drastically because of increase in competition. Therefore, it may be difficult.Let's hope for the best!