It is contingent on anything that is in it. You can find a local dental college and see if any of the scholars would like to supplement their kit. They may have nothing of their own but just lease from the school - but some universities require you to have your instruments that are available with Surgical Instrument Set Suppliers.
If it is a medical set that involves forceps of various flairs and shapes - this would be pretty good-looking to a dentist just starting in practice. You can try something like Craigslist - but there are Dental resale fortnightlies also that you could interact with - there is a Dental Customer, for instance, but I don’t know what is active in your area. The second way would be to set up a website and advertise your products or list them on websites like the Hospital product directory to sell the surgical instruments set as a Surgical Instrument Set Suppliers in India.