Hey dhananjay!
Cutoffs change every year depending upon many factors. All we can do for now is to predict your chances on the basis of previous year cutoffs  , and if we see previous year cutoffs , you need a score above 570 to get a seat in patna dental college , so you very low chances to get a seat there.
But you don't worry as you have chances for some great colleges like ;
1) Mithila minority dental college and hospital
2) Buddha institute of dental science
To predict the full list of colleges where you can get a seat , you should use Neet college predictor tool:
https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer