For 488 marks your rank will lie between 25,800-32,800 as according to previous years cut off rank vs marks analysis 

For admission into kgmu for mbbs and bds it is not possible with these marks through AIQ

Also with state quota it is not possible to get mbbs in kgmu as last year cut off marks for state quota in mbbs in kgmu were 569 which translates to rank 2318.For dental the last year cut off rank was 14,086 against 522 marks so again you have meagre chances of getting bds in kgmu for state quota but do apply as cut off ranks change every year.