Clinical Performance of Nobel N1 System

Inclusion Criteria: * Males and females, age 18 or older * Can provide an Informed Consent in English. * Absence of a single posterior tooth in mandible or maxilla with presence of natural neighboring teeth (except for second molar which only requires presence of first molar) * Presence of antagonist teeth * Possibility and will for an immediate restoration. * Systemic health recorded as an American Society of Anesthesiologists (ASA) I or II Exclusion Criteria: * · Unavailability to attend the follow-up visits. * A systemic contraindication for oral surgical procedures; ASA III or IV. * Pregnancy or nursing on screening or before the surgical procedure. * Diseases that could alter healing or bone metabolism (uncontrolled diabetes, diagnostic osteoporosis, etc.), * Taking medications that are altering healing or bone metabolism (bisphosphonates, long-time corticosteroids intake, RANK inhibitors, etc.) * Alcohol or drug abuse. * Current heavy smoking behavior (≥10 cigarettes/day). * Radiation therapy to the head or neck region. * Pathology in the implant planned sites that prevent implant placement. * Current diagnosis of Diabetes, which is uncontrolled (\>7 HbA1C). * Need for sinus lift or vertical bone augmentation * Previously failed implant site