Osseointegrated Dental Implants in Kidney Transplanted Patients

The primary purpose of this study is the evaluation of the effects of the kidney transplant on the periimplant bone density by the comparison with the density of healthy patients. The secondary purpose is obtaining clinical, histological and radiographic data to evaluate the effect of systemic conditions and its rebound on the insertion of fixtures. Evaluation criteria 1. Control group: evaluation of the periimplant bone density (1 mm) next to the implant virtually planned using the CT editing software on the cone beam CT acquired in a retrospective sample of patients already treated with the insertion of a fixture in the molar or premolar edentulous site 2. Test group: periodontal evaluation with plaque index, bleeding on probing index and probing 1 month before operation. 3. Test group: evaluation of periimplant bone density (1 mm) in the fixture virtual-projected zone (the implant will be inserted there) with the CT acquisition and editing software. 4. Test group: evaluation of the implant stability after their insertion (primary stability) using the Resonance Frequence Analysis. ISQ (Implant Stability Quotient) value is expressed in 4 numbers (mesial, distal, buccal, lingual), average values of three measures acquired in each side. 5. Test group: evaluation of the implant stability immediately after the insertion calculating the insertional torque value (ITV) with an implant motor. 6. Test group: evaluation of the periimplant bone using an endoral periapical radiograph with Rinn device immediately after the operation. 7. Test group: histomorphological examination of the bone core sample made by a trephine resulted from the implant site preparation