Whichever dental implant system used, the fixation of the implant to the bone is by the same bone biology principle, that of Osseo-integration. Like that of any broken bone, leg or arm, the healing process is exactly the same as used for the implant to fix to your jaw bone. As you can appreciate this can take some time to occur.
During the healing process there can be an optimal time to place the abutment (rod) and crown to the implant. Too soon and the implant can debond and fail due to the forces of eating. The usual time to load the abutment and rod can be between 3 to 6 months.
This is called delayed loading. This is a more traditional route to restore a dental implant and one with the less risk of failure.