Hello aspirant,

It's quite difficult to predict that whether you will get  seat or not as  cut off marks/rank for medical colleges keeps changing every year  depending upon various factors. As you mention with 345 marks and you are from RBA category you it is very difficult to get seat in MBBS or BDS. But you can try for BAMS or BHMS you have chance to get there...

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!!