Controlled Pilot Study to Assess Soft Tissue Reaction at the Crestal Part of a Dental Implant With ESTA Surface

Inclusion Criteria: * Subjects must have voluntarily signed the informed consent form before any study related action * Males and females must be at least 18 years of age and not more than 80 years old. * Partially edentulous in posterior (position 3-7) maxilla or mandible with implants planned for single crowns in an area with a healed extraction socket. * Adequate bone quality and quantity at the implant site to permit the insertion of a Straumann Soft Tissue Level implant of 4.1mm diameter without augmentation (at least 1mm bone buccally and lingually/palatal) Exclusion Criteria: * Oral surgery contraindicated according to the judgement of the investigator (should be explained in the CRF) * Local inflammation, including untreated periodontitis * Patients with inadequate oral hygiene or unmotivated for adequate home care. Full mouth plaque index \> 25% at time of surgery * Presence of conditions requiring chronic routine prophylactic use of antibiotics (e.g., history of rheumatic heart disease, bacterial endocarditis, cardiac valvular anomalies, prosthetic joint replacements) * Major systemic diseases * Medical conditions requiring prolonged use of steroids * Current pregnancy or breastfeeding women * Physical handicaps that would interfere with the ability to perform adequate oral hygiene * Use of any investigational drug or device within the 90 day period immediately prior to implant surgery on study day 0 * Alcoholism or chronically drug abuse * Smokers; more than 10 cigarettes per day * Immuno-compromised patients * 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. Secondary Exclusion Criteria: * GBR procedures at or adjacent to the planned study site * Lack of primary stability of the dental implant at site of interest (e.g., rotational movement of the implant at a minimum of 15 Ncm torque at connection of the healing abutment, or tactile mobility)