[A prospective single-cohort study of implant-supported full-arch metal-ceramic prosthesis with gold-platinum alloy framework for treatment edentulous mandible in elderly patients: 15-year report]. / Implantatsionnoe protezirovanie protyazhennymi metallokeramicheskimi konstruktsiyami s karkasom iz zolotoplatinovogo splava u pozhilykh patsientov: rezul'taty 15-letnego perspektivnogo odnogruppovogo kogortnogo issledovaniya.

OBJECTIVE: To study the effectiveness of implant-supported full-arch metal-ceramic prosthesis with gold-platinum alloy framework in elderly patients. MATERIALS AND METHODS: The study included patients with complete and/or partial loss of teeth and terminal dentition. In 2007-2008, 354 implants were inserted in 27 patients. The age of the patients was 61.31±5.08 years. Mombelli index criteria (mBI [modified Sulcus Bleeding Index]) were used. The plaque index was determined using a modified Löe & Silness method. The state of the peri-implant bone (ΔMBL) was determined by a series of OPG. The Geriatric Oral Health Index (GOHAI) was used to assess oral health in the elderly. RESULTS: Metal-ceramic full-arch implant prostheses with a gold-platinum alloy framework, based on a sufficient and optimal number of implants (6-8), showed high survival rate (100%) after 15 years. Marginal bone loss (ΔMBL) after 15 years was -1.44±1.27 mm. The survival rate of implants was 99.4%. Scores on the GOHAI scale were higher in patients after orthopedic rehabilitation (from 52.7±7.1 to 54.1±8.4, p<0.001). CONCLUSION: After 15 years, all prostheses had mechanical defects, which at the same time allowed them to be used without restrictions. Screw fixation of full-arch implant prostheses, although it was associated with mechanical complications, nevertheless made it possible to perform surgical interventions in a timely manner and stop the development of inflammatory complications. Thus, we do not see any grounds for removing metal-ceramic prostheses and replacing them with new implant prostheses even after a 15-year period of operation. At the same time, it is necessary to take into account the reduction in the possibility of individual oral hygiene in elderly patients, as well as possible restrictions on self-visiting a dentist or dental hygienist.

[Clinical analysis of the short-term and long-term results of the implant-supported Trefoil dental rehabilitation in Russia]. / Klinicheskii analiz blizhaishikh i otdalennykh rezul'tatov primeneniya implantatsionnogo protezirovaniya «Trefoil¼ v Rossii.

THE AIM OF THE STUDY: Was to presents the first clinical medium-term (18 months) results of implant-supported rehabilitation using this method in Russia, with the special attention paid to the assessment of the patient's quality of life on the GOHAI scale. MATERIALS AND METHODS: The authors performed a clinical and paraclinical examination of 29 patients (20 women and 9 men). The age of the patients ranged from 47 to 88 (average value - 65.45±9.7). We performed a retrospective analysis of all patients operated from June 2017 till March 2019. The patients filled in GOHAI questionnaires about their state of health and quality of life (before treatment and 6 weeks post-surgery). Patients with one or more anterior teeth present as well as fully edentulous mandibles were included in the study. The antagonist teeth could be presented as complete dentures, natural teeth, or implant-supported fixed restorations. All patients received three Trefoil implants (Nobel Biocare AB) inserted with a torque of at least 35 Ncm. The Trefoil bar (Nobel Biocare AB) was used as the framework of the Trefoil bioengineering structure. Statistical processing of the results was performed using the SPSS 23 software. The t-test for dependent samples was used to compare the results of GOHAI surveys before and after the operation and the following statistical hypotheses were suggested: H0 - the results of the GOHAI survey before the operation do not differ from the results of the GOHAI survey after the operation; H1 - GOHAI pre-op survey results are different from GOHAI post-op survey results. A comparison was made between the GOHAI results before and after surgery in male and female patients using the t-test for independent samples. RESULTS: 29 patients included in this (20 females and 9 males) with the mean age of 65 (range:47-88). The average time of operation (surgical operation, prosthetic stage including dental lab work) the Trefoil technique was 6.18 ± 0.87 hours. With the presence of teeth in the mandible, the operation took longer by an average of 45 minutes. Patients were followed for 15±6 months. No chipping of artificial teeth or fractures of the veneering was observed. The survival rate of restorations was 100%. The implant survival rate was 98.85%. The results of the GOHAI survey after surgery show a significant difference from the results of the pre-op survey. If we analyze the average values for the sample, it can be argued that the average result for the GOHAI survey before the operation (29.86) is significantly lower than the average one for the GOHAI survey after the operation (54.93). CONCLUSION: Preliminary medium-term results of the Trefoil concept for implant-supported rehabilitation of the mandible indicate high patient satisfaction results after 6-18 months of follow-up. It requires a further comprehensive study to obtain data with more patients and over a longer follow-up period.

[Criterion assessment system of the actual level of expertise of dental professionals practicing implant dentistry]. / Kriterial'naia sistema otsenki real'nykh kompetentsii vrachei-stomatologov, zanimaiushchikhsia dental'noi implantologiei. Rezul'taty analiza 43 portfolio molodykh vrachei-stomatologov.

The aim of the study was to develop criterion assessment system of the actual level of expertise of dental professionals practicing Implant dentistry. The study comprised fifteen dental experts aged from 35 to 47 years with the average 15 years clinical experience. For evaluation of the clinical portfolio of the dentists we developed 10 reference points and to ensure unification of the assessment approach we organised consensus methodical conference for our expert group. Scores were applied by parity of reasoning with point-rating system applied in continuing education programs of Medical University. Assessment of 43 clinical portfolios with short term and long term results of implant supported restorations was performed. Treatment was provided with the use of Nobel Biocare implants and prosthodontic rehabilitation was achieved with the use of CAD/CAM 'Procera' technology. The study showed that dentists who practice implant dentistry from 1 to 7 years have good manual skills and clinical expertise sufficient for achieving positive treatment outcome. At the same time in general their actual diagnostic skills are not sufficient, they misapply additional diagnostic methods, do not perform risk analysis of potential clinical complications that leads to shifting responsibilities on the patients in case of complications emergence. Methods of Computer Assisted Design are widely popular during all stages of rehabilitation (diagnostic, surgical stent, final prosthesis framework). Actual level of expertise of dental professionals doesn't depend on sex distribution. Males and females who practice implant dentistry have similar levels of clinical expertise.

[Conceptual approach to classification of implant supported prosthesis for edentulous patients]. / Kontseptual'nyi podkhod k klassifikatsii protyazhennykh implantatsionnykh zameshchayushchikh konstruktsii, ispol'zuyushchikhsya u patsientov s polnoi poterei zubov.

The aim of this study was the creation of a conceptual model of the standard implant prosthetics for edentulous patients using the data of comprehensive examination and implantation prosthetics in 372 patients aged 38 to 80 years (201 women, 171 men) with 582 implant supported prosthesis of various types, supporting on implants «Nobel Replace Select/Groove¼ and «Nobel Speedy Groove¼ (3675 implants). Clinical classification of implant-supported prosthesis for edentulous patients included 5 classes: class 1 (1-2 implants) included 6.2% of implant supported prosthesis, class 2 (3-4 implant) - 19.2% of prostheses, class 3 (5-6 implants) - 30.2% of replacement structures; IV (7-10 implants) - 44%, and V - 0,3%. Restoration class was age-dependent.