Since you haven't mentioned your category, I shall assume you belong to General/Unreserved Category.

Via 15% All India Quota

• Previous year, the closing rank for getting Govt. BDS College was 25,708 (for General Category, college allotted - Govt Dental College RIMS Kadapa). So it is difficult to get a Govt. BDS Quota College via 15% AIQ with 43,905 rank.
• However, you can easily get a Government aided/Private BDS college with 43,905 rank and the best college choice would be - Manipal College of Dental Sciences, Manipal , as it will give you scholarships and concessions as well based on your NEET Performance.

Alternatively, to know what all dental colleges you can get with your NEET UG Rank, you may check out the NEET UG College Predictor Tool - https://medicine.careers360.com/neet-college-predictor