Periimplant Mucosa Dynamics Around Divergent and Concave Atlantis Abutment Transition Profiles

Inclusion Criteria: * 18 years of age or greater * Subjects requiring replacement of a single-rooted tooth in the maxillary arch from first premolar to first premolar with an implant-supported restoration * Teeth adjacent (mesial and distal) to study site must consist of two stable, natural teeth without signs of periodontal bone loss (\<2.0mm) and/or significant soft tissue loss * An opposing dentition with teeth, implants, or fixed prosthesis * Subjects must be willing to follow instructions related to the study procedures * Subjects must have read, understood, and signed the informed consent document Exclusion Criteria: Exclusion Criteria: * Insufficient interocclusal space for implant placement and/or restoration at study site * More than 2.0mm vertical bone loss at study site as measured from the mid-buccal crest of the bone on the adjacent teeth * Untreated rampant caries * Tobacco use free for ≤ 6 months * Liver or kidney disfunction/failure * Active severe infectious diseases that may affect normal healing and/or bone metabolism (e.g. AIDS) * Uncontrolled diabetes * Current alcohol or drug abuse * Need for systemic corticosteroids or any other medication that would influence post-operative healing and/or osseointegration * History of relevant head/neck cancer and/or radiation of the head/neck * Subjects who currently use bisphosphonates or have a history of bisphosphonate use * Subjects with metabolic bone diseases such as osteoporosis or Paget's disease of bone * Known pregnancy or nursing mothers * Unable or unwilling to return for follow-up visits for a period of 1 year * Unlikely to be able to comply with study procedures according to investigators judgement