Exact indication and considerations for the immediate loading protocol were defined for the first time in 2002 at the World Congress Consensus Meeting in Barcelona according to which adequate implant stability, controlled occlusal loads for full arch cases, non-occlusal loads for short span bridges and single teeth replacements are important considerations for a successful outcomes. According to this meeting, immediate functional (or occlusal) loading is defined in the treatment protocol, that is, when implants have been placed in the bone and have been restored with the use of restorations with occlusal contacts within 3-4 days of surgery, and immediate non-functional loading (IL) as restorations without occlusal contacts.