Hi... as per your saying it seems to be a long standing infection. We need do an xray for that particular tooth and evaluate the lesion present around your tooth roots. Charges vary depending upon the extent of the lesion and the amount of tooth decayed since its been decayed for 5 yrs and the type of crown u want put on.. Cant say about the exact expenses your treatment may incur without evaluating the tooth clinically and the xray.

Varies from Clinic to Clinic depending upon the set up to the dentists expertise. Can be from 3500 to 7000 approximately. Crown will depend upon the type of crown you choose. Varies from 2000 to 12000 .