548 is a good score for BDS. Taking into account all the previous year cut offs, you do have a chance to get a seat in BDS in government college. However, the cut offs varies every year and from state to state. At this score there is probability that you might get a seat in BDS .But it all depends on your state. For example in states like U.P. ,New Delhi ,Maharashtra where there is huge competition chances of getting a seat in MBBS /BDS at this score are very less but in other states where competetion is comparatively less there you can get a seat .

For more information you can visit  NEET Rank Predictor

https://medicine.careers360.com/neet-rank-predictor?utm_source=qna&utm_medium=neet_rp

For more information you can visit NEET College Predictor

https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp

I hope this information helps you.

Good Luck!!