Hello Sapna,

In order to fill the sufficient number of vacant seats, the Central Government in consultation of Dental Council of India can lower the NEET MDS cut off percentile and scores. Last year, the cut off percentile of each category was lowered by 29.735th percentile.

The cut off percentile for general category candidates was reduced from 50 to 20.265, followed by 10.265 percentile for SC/ST/OBC and 15.265 for general PwD categories. 

It can not be said anything about 2019 from now.

Good Luck!