Keratized Mucosa in CG Implant Placement: CTG vs Flapless

Inclusion Criteria: * Age 18+ * Patients with partial edentulism in the posterior region (4-7) upper or lower for at least 3 months * Patient whose tomographic examination shows adequate bone volumes for computer guided placement of a standard diameter implant (\> 3.5 mm) without the need for bone regeneration procedures * Patients who have accepted informed consent and participation in the study * Patients who do not have exclusion criteria Eclusion Criteria * Patients who refuse to co-operate * Systemic conditions of exclusion: * Medical conditions requiring prolonged use of steroids * Severe hemophilia * In therapy with intravenous bisphosphonates * History of white blood cell dysfunction or deficiency * History of head and neck radiotherapy or chemotherapy * History of kidney failure * Pregnant or breastfeeding patient * History of uncontrolled endocrine disorders * Physical handicaps that hinder proper oral hygiene * Use of experimental devices or drugs within 30 days prior to implant placement surgery * Alcoholism or drug abuse * Smokers of\> 10 cigarettes per day or the equivalent cigar or\> 10 tobacco-based chewings per day * Conditions or circumstances that prevent the completion of participation in the study or interfere with the analysis of the study results Local exclusion conditions: * Local inflammation, including untreated periodontitis * Patients with erosive lichen planus * History of local radiation therapy * Presence of bone lesions * Unhealed extraction sites * History of bone reconstruction and bone grafting techniques in the sites where the implants are to be inserted * Bruxism * Bleeding index\> 30% and number of pockets\> 5mm greater than 10