A Comparative, Randomized, Prospective, Performance Evaluation of Abutments in Single Tooth Gaps

Inclusion Criteria: * Subjects must have voluntary signed the informed consent form before any study related action. * Males and females with at least 18 years of age * Non-smokers * Straumann bone level implant (healed for at least 4 weeks) in a tooth gap in the maxilla or mandible with thick tissue biotype * Adequate oral hygiene (Full mouth plaque index; O'Leary, et al. 1972) \<25% at abutment placement * The patient must be able to open the mouth to allow removal of the abutment at the planned abutment site Exclusion Criteria: * Systemic disease that would interfere with dental implant therapy (e.g. uncontrolled diabetes) * Any antibiotic treatment or anti-inflammatory treatment within the past 2 month * Any contraindications for oral surgical procedures * Mucosal diseases (e.g. lichen planus, mouth ulcer) * History of local irradiation therapy * Current treated (within the last 12 month) or untreated periodontitis * Current treated (within the last 6 month) or untreated gingivitis * Probing pocket depth of ≥4 mm on one of the teeth immediately adjacent to the dental implant site * Severe bruxing or clenching habits * Lack of primary stability of the implant at abutment placement * Subjects who have undergone administration of any investigational device within 30 days of enrolment in the study * Conditions or circumstances, in the opinion of the investigator, which would prevent completion of study participation or interfere with analysis of study results, such as history of non-compliance or unreliability * Physical or mental handicaps that would interfere with the ability to follow protocol procedures * Pregnant or breastfeeding wome * Insufficient soft tissue attachment to the neck of the abutment (e.g. visibility of the abutment platform or exposed ESTAnsurface) after abutment placement