Best of luck with your dentistry career. I've tried to answer your questions as best I can.
The current fees for graduate Irish, UK & EU students are €8,120 per year (x 5 years) = approx €40,000. Irish students who have never attended university before are paid-for by the State.How much does it cost for the whole thing?
The usual route of entry to these courses is the Irish Leaving Cert (the final exam at the end of "high school"). However, UK A-levels, the International Baccalaureat and some US school-leaving qualifications are acceptable, as are previous university degrees. The International Education Office of UCC seem very helpful - UCC: International Education Office :Would they accept UK's GCSE students?
If i complete it, can I guarantee my entrance to UCC for dentistry?
Unfortunately, No.Are there any online courses for premed which, when completed, can get me accepted in UCC?