Hello aspirant,
Getting a seat in a government BDS (Bachelor of Dental Surgery) college with a NEET score of 4,00,000 is quite competitive. It's difficult to predict exactly which government BDS college you can get according to your rank. However, you can check the previous year's cut-off ranks for BDS courses in government colleges as a reference.

For more information you can click the link below.

https://medicine.careers360.com/articles/neet-cutoff-ipu