Abstract
Implant therapy has been widely used for fully or partially edentulous patients. Following the fundamental rules make it highly predictable, and thus it is a highly an effective option in various edentulous statuses. In more than a few patients who need prosthetic treatments, however, conventional manners are more appropriate because of the variety found in oral conditions. Furthermore, the social environment or demands of patients should be considered in decision making. A large difference between implants and natural teeth, which are surrounded by periodontal ligament, is dynamic behavior. This will theoretically make it impossible to evenly distribute occlusal load in a mouth having both teeth and implants. More consideration is required when providing implant prosthodontics to partially edentulous patients with periodontal complications remaining teeth. In this presentation, I would like to describe the criteria of various prosthetic treatments by showing cases of occlusal reconstruction.