Here is the expected cut off for dental colleges in Maharashtra based on the previous years trends (since you did not mention your category, it is a generalized idea for UR category)

Government Dental Colleges

Government College of Dentistry, Indore- 558 marks

Private dental colleges-

Bhabha College of Dental Sciences, Bhopal - AIR 662218- 470349

College of Dental Sciences, Rau, Indore- 254 marks

Guru Gobind Singh Dental College Burhanpur - AIR 692277- 669011

Sri Aurobindo College of Dentistry, Indore- 381 marks