Peri-implant marginal bone stability is one of the main features used to evaluate the long-term success of implant therapy. Radiographic marginal bone loss (MBL) up to 2 mm during the first year of function, followed by a maximum of 0.2 mm of loss annually, was among the traditionally accepted criteria defining implant success. Nowadays, improvements in implant design and clinical protocols allow for better preservation of peri-implant bone levels during the physiologic bone remodeling phase.