BDS in Punjab

If your score is 450 in the general category, you have a chance of getting into any college in Punjab for a BDS program, depending on that particular college and its cut-off for the year.
Expected Cutoffs
The expected NEET cut-off for BDS admissions in the state of Punjab would be around 720-137 marks. Your mark is 450, so you are far below this range.
Recommendations
Verify Selective Colleges: The cutoff scores for private dental colleges could be lower compared to Government Institutes.
Counseling: In Punjab NEET counseling process, you would find an option.
States Other than Punjab: You may seek colleges in other states whose cutoffs may be even friendlier.