Inclusion Criteria:  Healing time of at least two months for patients who underwent extraction in areas to be rehabilitated with implants Adequate bone volume at the implant site (ie, sufficient for placement of an implant of at least 3.3 mm in diameter and 6 mm in length) assessed by preoperative CT and clinical evaluation. Use of Straumann bone level or conical bone level implants, with NC or RC platforms.  Exclusion Criteria:  Patients with systemic diseases (e.g., heart disease, leukocyte and coagulation disorders, metabolic disorders, immunosuppression) History of radiotherapy in the head and neck region Current treatment with steroids and/or bisphosphonates Neurological or psychiatric impairment that can interfere with good oral hygiene Smoking (more than 10 cigarettes a day) History of illicit drug or alcohol abuse