APPLICATION OF THE METHOD OF FREQUENCY-RESONANCE ANALYSIS OF IMPLANTS INSTALLED AFTER AUTOGENOUS BONE TRANSPLANTATION

Abstract

Background: Purpose of study determine the timing of prosthtic rehabilitation of patients after autograft and dental implantation of the jaw bone using resonance-frequency method (RFA). Methods: The analysis of the treatment of 34 with vertical resorption of the lower jaws, and dental implant prosthetic rehabilitation performed for the period 2020-2023.All patients underwent a complex clinical, laboratory study, computed tomography (CT). At the first stage, the autogen bone grafting procedure, at the second stage, 4 months after autogen bone grafting implants were installed. 3 months later, after implants inserted to determine the timing of prosthetic rehabilitation, the method of RFA-Resonance Frequency Analysis method was used, if normal results were recorded, the prosthodontic phase began. Postoperative clinical and radiological monitoring was regularly conducted, and criteria for the success of implantation and success of prosthetics of implant- supported reconstructions were evaluated. Change in marginal bone levels was assessed by taking digital x-rays immediately after restoration fixation (base line for comparison), after 1 and 3, 5 years post operatively. Results: No intra-operative or immediate post-operative complications were noted after autografting procedure. The postoperative of the patients was favorable, with the integration of the autografts. 3 months after autogenous bone grafting, the resorption of the graft in some transplant recipients is up to 10%. All of the patients presented with healthy soft tissue. Marginal bone loss data were recorded, mean marginal bone loss (MBL) was 1.2 ± 0.25 mm after 3 years. The mean RFA recordings of all 136 implants were 65 ISQ at implant placement respectively 73 ISQ after 3 months. The functional load on dental implants was performed with ISQ values above 65 (dental prosthetic rehabilitation was performed after 3-4 months of submerged healing). A total of 8 implant failures were recorded. After 5 years show survival rates 97%. Conclusions: RFA could serve as a noninvasive diagnostic tool for detecting implant stability during healing stages and subsequent routine follow ups. The method of resonance-frequency analysis allows us to determine the timing of the beginning of the prosthetic stage in each specific case.