Hi Moorathoti, 

            I believe you cannot get a government college with this score, however you can try for private dental colleges. The cut off was 407 this year for RIDS, Kadapa and other government dental college. Please check the SC cut off at the given link below: 

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

There are many private colleges in Andhra Pradesh where you can get admission undr SC category. They are: 

1. Sibar Institute of Dental Sciences

2. Siddhartha Dental college, Vijayawada.

3. Vishnu Dental college, Bhimavaram.

4. NTRUHS college, Vijayawada

5 Gitam Dental College, Visakhapatnam

Hope this helps! All the best ! :)