Influence of Vertical Implant Position on Marginal Bone Loss in Cases With Thin Phenotype

Inclusion Criteria: * Patients with single missing upper anterior or premolar teeth * Patients with minimum buccolingual width of 6 mm and mesiodistal width of 6 mm * Patients with thin soft tissue phenotype * Patients with healthy systemic conditions. * Patients older than 18 years. * Good oral hygiene. * Cooperative patients who accept a one-year follow-up period. * Patients who consent to being part of the study (sign an informed consent form). * Adequate inter-arch space for implant placement. * Favorable occlusion (no traumatic occlusion). * Absence of allergy to the prescribed medications. Exclusion Criteria: * Patients with inadequate bone volume and/ or quality * Patients with local root remnants * Patients with inadequate wound healing * Patients with signs of acute infection related to the area of interest. * Patients with habits that may jeopardize the implant longevity and affect the results of the study such as parafunctional habits (Lobbezoo et al., 2006). * Heavy smokers (more than 10 cigarettes per day) (Lambert, Morris and Ochi, 2000). * Metabolic diseases such as diabetes or hyperthyroidism as well as systemic medications such as chemotherapy or bisphosphonates * Pregnant or nursing women. * Uncooperative patients.