The features of interaction between dental implants and organism tissues and the modern methods of creation of antibacterial covering on implant surfaces

Maiborodin, I. V.; Shevela, A.A.; Toder, M. S.; Шевела, А. И.

doi:10.17116/rosstomat201710432-40

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…Есть сведения, что даже ионы и наночастицы титана могут вызывать мутагенный эффект в клетках [47]. Минимизировать воздействие ионов металлов на ткани возможно путем нанесения на поверхность имплантируемых изделий защитных покрытий [48]. Можно предположить, что в выполненном исследовании кальций-фосфатное покрытие, нанесенное на поверхность имплантатов из титанового сплава Ti6Al4V, дополнительно выполняло необходимую защитную функцию.…”

Section: ограничения исследованияunclassified

Efficiency of 3D Implants with Bioactive Properties for Treatment of Extensive Bone Defects: Experimental Study

Попков

Кононович

Горбач

et al. 2021

Traumatology and Orthopedics of Russia

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Background. The problem of replacing extensive bone defects remains relevant. The use of implant structures with bioactive properties can stimulate osteogenesis, which will improve the final treatment result.The aim of the study. In an in vivo experiment, to study the possibility of replacing an extensive defect in the bone diaphysis with a personal bioactive cellular 3D implant and evaluate the long-term results of its use.Materials and Methods. In an in vivo experiment, adult large mongrel dogs (n = 8) were modeled with an extensive segmental defect of the tibial diaphysis measuring 4 cm. The defect was replaced with a cellular bioactive 3D implant made of titanium alloy Ti6Al4V, manufactured using the additive technology. The diameter of the cells was 1.5 mm on average. The walls of the implant had pores of 100– 300 μm in size. The inner and outer surfaces were coated with a calcium phosphate layer formed by micro-arc oxidation. The primary fixation was provided with the Ilizarov apparatus. In the early postoperative period, antibiotic prophylaxis with broad-spectrum drugs was performed. Clinical, X-ray, histological and statistical methods were used to analyze the results. The main control points were considered: the end of external fixation with the Ilizarov apparatus, after 180 days and 1 year after the termination of external fixation.Results. During the experiment, the death of animals and complications were not observed. The spatial location of the implant was preserved. The formation of a strong bone-implantation block occurred 37.2±6.3 days after the operation. During this period, the external fixation apparatus was dismantled. Osseointegration was provided under conditions of sufficient primary mechanical stability, due to the cellular structure of the implant, the presence of pores on its walls, and the osteoinductive properties of the applied calcium phosphate coating. The achieved degree of osseointegration persisted in long-term periods (6 months and 1 year after the termination of external fixation). The osteoinductive properties of the calcium phosphate coating were confirmed by the expression of osteopontin cells at all stages of the experiment. Outflow of Ca and P from bone fragments was not observed. An elastic sheath was formed on the surface of the implant, similar in structure to the periosteum. The implant cells were filled with a well-vascularized bone substrate. In the projection of the intermediate zone, compact bone tissue was formed, and in the projection of the medullary canal — reticulofibrous bone marrow. This indicates the possibility of organotypic remodeling of bone structures inside the implant.Conclusion. The results of the study showed the effectiveness of using a bioactive cellular 3D implant to replace an extensive defect in the shaft of the bone. The architectonics and osteoinductive properties of the implant surface contributed to the formation of complete osseointegration in a short time, while maintaining the achieved result in long-term periods.

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Section: ограничения исследованияunclassified

Efficiency of 3D Implants with Bioactive Properties for Treatment of Extensive Bone Defects: Experimental Study

Попков

Кононович

Горбач

et al. 2021

Traumatology and Orthopedics of Russia

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Estimation of the Composition of Microbiotes of Periimplant Furrows in the Process of Osteointegration of Dental Implants

Махмудов¹,

Mahmudov

2019

Actual Problems in Dentistry

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Background. The necessity of studying the microbiota of the oral cavity, as one of the main causes of complications after the installation of dental implants, is considered. In the dynamics of osseointegration of dental implants (1-6-12 months), a study was made of the species and quality composition of the microbiota of peri-implant and gingival furrows. Objectives ― to study the composition of microbiota in the gingival sulcus of an adjacent healthy tooth and the peri-implant sulcus of the implant in the process of osseointegration of dental implants. Methods. A microbiological study of the composition of the microbiota of the studied biotopes — the peri-implant sulcus and gingival sulcus of an adjacent healthy tooth in the process of osseointegration of dental implants in 83 patients was carried out. The total number of bacteria was detected by real-time polymerase chain reaction. Results. 1 month after the installation of dental implants and fixation of the Treponema denticola gingival former in the samples from the gingival sulcus of the tooth was 16.03 %, and the number of Tannerella forsythensis was 5.52 % higher than in the samples from the peri-implant sulcus. After 6 months, the total bacterial mass in the peri-implant sulcus was 12.7 % less. The amounts of Prevotella intermedia, Treponema denticola, Tannerella forsythensis and Porphyromorans gingivalis in the peri-implant groove decreased by 2.9, 6.1, 5.2 and 11.6 %, respectively. After 12 months, a statistically significant decrease in Porphyromorans gingivalis was observed 2.7 times (p <0.01) and 2.6 times (p <0.01), respectively, in the peri-implant and gingival sulcus. Conclusions. In the process of osseointegration of dental implants, the total bacterial mass (p <0.01), Porphyromorans gingivalis (p <0.01) decreased dynamically, statistically significantly, the number of Tannerella forsythensis increased (p <0.05). Also dynamically, but slightly, a decrease in Candida albicans was observed. After 12 months, an accumulation of Prevotella intermediaries was observed at the implantation sites.

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Vertical Titanium Screws With Modified Coating to Increase the Reliability of Fixation and Stabilization of Abutments to the Dental Implant Platform

S.V.,

P.A.,

A.P.

2023

Mediko-farmacevtičeskij žurnal "Pulʹs"

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Vertical screws of abutments after dental implantation tend to loosen, unscrew and break, which is associated with low strength, tribological and corrosion properties of screw material under stress and aggressive environment in the oral cavity. The main causes of problems with dental screws are a decrease in their fatigue strength due to defects, residual tensile stresses and hydrogen pickup of surface layer, as well as the process of fretting corrosion that occurs under conditions of micro-displacement under cyclic loads of conditionally stationary tribocoupling. The design and operational characteristics of abutment screws, the main problematic properties of titanium materials are considered, the calculated dependences of torque, pre-tightening force, friction coefficients in thread and on support surface are given. The analysis of numerical values of these parameters is given. It is concluded that the use of vertical titanium screws with functional coatings is one of the ways of improving the reliability of the dental implantation system. The results of studies of the BioPateks diamond-like coating of the a-C:H/a-SiC-Ag system for vertical titanium abutment screws applied using cold atmospheric plasma are presented. The effectiveness of this coating has been demonstrated in metallographic analysis, static tensile tests, tribological studies, tests under microabrasive wear conditions, studies of barrier properties from the release of toxic vanadium and aluminum ions, studies of surface defects during fretting fatigue. The BioPateks coating and its application technology can be used both in industrial and in clinical and laboratory conditions. For these purposes, small-sized and low-energy equipment is used.

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The features of interaction between dental implants and organism tissues and the modern methods of creation of antibacterial covering on implant surfaces

Cited by 3 publications

References 44 publications

Efficiency of 3D Implants with Bioactive Properties for Treatment of Extensive Bone Defects: Experimental Study

Efficiency of 3D Implants with Bioactive Properties for Treatment of Extensive Bone Defects: Experimental Study

Estimation of the Composition of Microbiotes of Periimplant Furrows in the Process of Osteointegration of Dental Implants

Vertical Titanium Screws With Modified Coating to Increase the Reliability of Fixation and Stabilization of Abutments to the Dental Implant Platform

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