Osseointegrated implants are placed traditionally following a two stage protocol, wherein implants are left to heal unloaded for 3-4 months in mandible and 6-8 months in maxilla. Successful osseointegrated implants are anchored directly to bone. The presence of highly mineralized compact mature bone with many Haversian canals have been shown in the microscopy of retrieved implants from man and experimental animals. Regions of fibrous tissue interposition are not found. The newly formed bone has features of normality with marrow spaces filled with blood vessels.