Classical guidelines for osseointegration include a long healing time, during which functional load should be avoided. However, the long healing period might impose an intolerable situation on some patients, especially in the completely edentulous situation. Studies on immediately loaded implant-supported prostheses in completely edentulous patients have been reported, exhibiting high success rates comparable to conventionally loaded implants. This article describes the surgical and prosthodontic procedure for the immediately loaded mandibular implant bar overdenture as well as its clinical rationale.