Inclusion Criteria:  Any male or female adult (≥ 18 year old) patient from the University Complutense of Madrid, being able to sign an informed consent form, presenting a submerged dental implant scheduled to undergo a second stage surgery, which is bounded mesially or distally by a remaining natural tooth, and exhibits a lack of buccal soft tissue volume, will be potentially eligible for this trial.  The case definition for a lack of buccal soft tissue volume will be the presence of a thin buccal mucosa (< 2mm) or a minor volumetric contraction of the alveolar process (flat or concave buccal mucosal profile at the edentulous area).  Exclusion Criteria:  Patients fitting to all the above inclusion criteria will be not included in the study if unable to attend to the study-related procedures (including the follow-up visits) or if one or more of the following systemic or local exclusion criteria will be found during enrolment or through the study:  Systemic primary exclusion criteria:  Compromised general health status contraindicating the study procedures (≥ASA IV); Drug abuse, alcohol abuse, or smoking > 10 cigarettes a day; Chronic use of corticosteroids, NSAIDs, or immune-modulators (any type, any dose); Assumption of bisphosphonates (any type, any dose, past or present); Pregnant or nursing women; Hypersensitivity to paracetamol;  Local primary exclusion criteria  History of previous mucogingival surgeries in the area of interest; Lack of adequate vestibule depth to perform a bilaminar procedure; Lack of osseointegration at the time of implant reopening; Need for additional bone grafting at the time of implant reopening; Intraoperative evidence of a flap thickness < 0,5mm or > 2mm.  Secondary exclusion criteria:  - Non compliant patients: poor oral hygiene at 2 consecutive visits.