GDC Bangalore last year had cutoff 340 marks which looks out of your reach this year. But yes Govt. Dental College & Research Institute, Bellary had cutoff 296 marks for the obc category wherein you can get a fair chance of admission this year. ESIC Dental College, Gulbarga also had cutoff of 292 marks for the obc category. So you have a fair chance in these two colleges. But yes the cutoffs are sure to rise let's hope it don't go above your score. 

Best wishes. For further detailed information refer to our site.. 

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

Thank you.