CLINICAL EFFECTIVENESS OF GUIDED IMPLANT SURGERY IN PATIENTS WITH FULLY EDENTULOUS PATIENTS ATROPHY OF THE LOWER JAW

Abstract

Objectives: The aim of this study was to evaluate the results of mandibular prosthetics based on 6 implants placed with guided surgery and immediate loading in patients with a completely edentulous mandible. Materials and Methods: 52 patients participated in this study, referred in need of full arch implant-supported reconstructions in mandible. Jaw bones patients were diagnosed with cone beam computerized tomography. Patients were evaluated according to the results of computed tomography (CT). Computer software was used to create virtual templates for 3Diagnosys, an implant treatment. Surgical guided were made for ostectomy and for implant position using a 3D printer (Stratasys. Implants were placed flapless implantation metho through the sleeves of the surgical template tightening torque of 35–45 Ncm. Patients received 312 implants (64 UV functionalised short (≤6 mm) implants, 248 standard implants) 52 implant-supported prosthesis. The following parameters were assessed: implant success, prosthetics survival and changes in peri-implant marginal bone level (MBL), probe depth (PPD), and probe bleeding (BOP). Results: After 3 months loss of the marginal bone of 0.7 ± 0.35 mm (MBL), after 12 months of observation, there was a slight loss of the marginal bone over time 1.2 ± 0.38 mm (MBL), 1,47 ± 0.42. mm (MBL), after 5 years of observation. After 5 years of observation, the average PPD was 2.42 ± 0.47 mm, the average BOP was 1.32 ± 0.85. Of the 312 implants, 3 failed to osseointegrate, 5 implants failed (peri-implantitis) after 5 years. No serious prosthetic complications have been reported. After 5 years, the effectiveness of implants was 97.4%. Conclusion: Computer-guided implant surgery and immediate loading of implants in patients with insufficient lower jaw and completely edentulous is a predictable and effective method with a minimum rehabilitation period.