Hi Shreyansh,

I suppose you have completed with your M.B.B.S. and want to further pursue M.D.S. in Orthodontics. 

Top Dental colleges in India are : 

• Maulana Azad Institute of Dental Science, New Delhi 
• Manipal College of Dental Sciences, Manglore, Karnatka
• SDM College of Dental Science and Hospital Sattur, Dharwad, Karnataka 
• Dr. R. Ahmed Dental College and Hospital, Kolkata
• SRM Dental College, Chennai
• Kannur Dental College, Kannur, Kerala
• Uttaranchal Dental and Medical Research Institute, Dehradun
• Amrita College of Dentistry, Kochi, Kerala

Hope it helps :)