To be eligible for the BDS degree at Sree Siddhartha Dental College in Tumkur, candidates must have completed their 10+2 education with Physics, Chemistry, Biology, and English as core subjects. They should have obtained a minimum of 50% marks in the qualifying examination (40% for SC/ST candidates). Additionally, candidates must have qualified in the National Eligibility cum Entrance Test (NEET) conducted by the National Testing Agency (NTA). Meeting these criteria is essential for admission to the BDS program at Sree Siddhartha Dental College, Tumkur.