Hi Mohit,
Currently the Himalayan Institute of Medical Science, is considered the best private university for students aspiring their future to be in the medical field. But unfortunately HIMS does not offer BDS in UG. They offers MBBS, B.Sc. program in Medical Technology, B.P.T., BASLP at UG level and MD, MS, PG diploma at PG level. So you might have to look for some other university.

Good Luck