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1.
Stomatologiia (Mosk) ; 100(3): 13-18, 2021.
Artigo em Russo | MEDLINE | ID: mdl-34180619

RESUMO

OBJECTIVE: To study the effect of the occlusal surface of a natural tooth, cement-retained and screw-retained fixed partial dentures supported by dental implants and the coefficient of friction on the stress distribution in the peri-implant bone at maximum and minimum principal stresses. MATERIAL AND METHODS: Study of maximum and minimum principal stresses in models with natural teeth and artificial crowns supported by dental implants, taking into account the coefficient of friction using the finite element analysis. RESULTS: In models represented by fixed partial dentures supported by dental implants and a natural tooth, the maximum tensile stresses arise in the cortical bone in the cervical region of the artificial crown, and the maximum compressive stresses occur both in the cortical layer in the cervical region of the artificial crown and in the cervical region of the tooth. In models with two fixed partial dentures supported by dental implants or two natural teeth, the stress distributions in the cortical layers in the upper and lower jaw are almost identical. CONCLUSION: Modeling the antagonist and adding to the FEA model is important in order to determine the precise and realistic direction of the resulting force vector. Amplification of the number of contact areas should be considered when modeling the occlusal surface of artificial crowns supported by dental implants.


Assuntos
Implantes Dentários , Boca Edêntula , Coroas , Prótese Dentária Fixada por Implante , Análise do Estresse Dentário , Prótese Parcial Fixa , Análise de Elementos Finitos , Humanos , Estresse Mecânico
2.
Stomatologiia (Mosk) ; 100(2): 60-63, 2021.
Artigo em Russo | MEDLINE | ID: mdl-33874663

RESUMO

OBJECTIVE: To study the effect of morphological parameters of natural teeth and fixed partial dentures supported by dental implants on the time of occlusion. MATERIAL AND METHODS: The study of the morphological parameters of the first right upper and lower molars of natural teeth and fixed partial dentures supported by dental implants in the positions of the first molars of the upper and lower jaws, followed by determination of the relationship between the obtained data and the occlusion time using mathematical and statistical analysis. RESULTS: The study of the morphology of the occlusal surface of natural teeth and fixed partial dentures supported by dental implants did not reveal significant differences in the results of measuring the distances between the cusps of the upper and lower first molars, both natural teeth and fixed partial dentures supported by dental implants. However, the angles of the slopes of the cusps and the angles between cusps in natural teeth are sharper than those of artificial crowns. CONCLUSION: According to the correlation analysis in both groups, the relationship between the occlusion time and the morphological parameters of the lower molars was determined; the relationship between the morphological parameters of the upper molars and the occlusion time was not revealed.


Assuntos
Implantes Dentários , Boca Edêntula , Oclusão Dentária , Prótese Dentária Fixada por Implante , Prótese Parcial Fixa , Humanos
3.
Stomatologiia (Mosk) ; 100(1): 73-78, 2021.
Artigo em Russo | MEDLINE | ID: mdl-33528960

RESUMO

The article proposes a methodology for creating an assessment of the quality of dental care based on the use of the method of analysis of hierarchies and the theory of fuzzy logic. Approbation of the methodology was carried out on the assessment of the quality of dental services for the manufacture of metal-ceramic crowns. When conducting a new assessment, you can achieve a reduction in the time of its conduct by 6 times, increasing the number of evaluation criteria by 2 times and get results with a confidence factor (p=0.95). Evaluation allows you to combine existing descriptive, quantitative, radiological, functional assessments into a system and rank their significance for the final result. This allows assessing the quality of treatment more objectively.


Assuntos
Coroas , Porcelana Dentária , Assistência Odontológica , Planejamento de Prótese Dentária , Falha de Restauração Dentária , Humanos , Ligas Metalo-Cerâmicas
4.
Stomatologiia (Mosk) ; 98(5): 118-123, 2019.
Artigo em Russo | MEDLINE | ID: mdl-31701941

RESUMO

The article the literature review on dental materials for the manufacture of gum formers used in dental implantology. Adhesion of microorganisms to titanium, PMMA and PEEK resins is discussed. According to published studies PEEK polymer is characterized by a similar bacterial contamination compared to titanium but shows lower degree of contamination when compared to acrylic resins in equal conditions.


Assuntos
Dente Suporte , Materiais Dentários , Prótese Dentária Fixada por Implante , Teste de Materiais , Titânio
5.
Stomatologiia (Mosk) ; 98(2): 8-12, 2019.
Artigo em Russo | MEDLINE | ID: mdl-31089112

RESUMO

The need for the practice of dentistry in the digital (CAD/CAM) technologies have initiated the emergence of dental laboratories as a separate and independent legal entities. The choice of a strategy for the development of these laboratories is aimed at ensuring the achievement of the main goals in the long term. It is established that the type of innovation in terms of 'Shake test' J. Daya, in these organizations can be designated as an option 'C' - a strategy of gradual conquest of the market. The main components of the development are: work with staff, information support, financial optimization; material and technical support, marketing activities, organizational and legal support, the formation of the quality system.


Assuntos
Desenho Assistido por Computador , Planejamento de Prótese Dentária , Laboratórios Odontológicos , Humanos
6.
Stomatologiia (Mosk) ; 97(6): 4-9, 2018.
Artigo em Russo | MEDLINE | ID: mdl-30589416

RESUMO

The study presents a review of the legislative regulation of compensation for moral damage in case of poor medical dental care and judicial practice according to the types of civil cases for 25 years as well as the main tendencies of existing court dental practice and the long-term trends.


Assuntos
Assistência Odontológica , Princípios Morais , Assistência Odontológica/ética , Assistência Odontológica/normas
7.
Stomatologiia (Mosk) ; 97(2): 4-7, 2018.
Artigo em Russo | MEDLINE | ID: mdl-29795096

RESUMO

The paper presents the analysis of legislative and regulatory framework for the control of the quality and safety of medical activities. Legislative and regulatory framework requires mandatory internal control of the quality and safety of medical activities and dictates its structure. In the development of the internal control of the quality and safety of medical activities there is, however, a need to consider medical and social, legal, organizational, ethical and economic issues.


Assuntos
Legislação como Assunto , Qualidade da Assistência à Saúde , Segurança do Paciente
8.
Stomatologiia (Mosk) ; 96(5): 14-18, 2017.
Artigo em Russo | MEDLINE | ID: mdl-29072638

RESUMO

The paper presents the analysis of regulatory frameworks for wage payment system in federal, state and municipal dental clinics. The new wage payment system provided significant freedom for employers in payments size determination by regulation of basic, stimulating and compensative salary payoffs. The study highlights the need for scientific studies on dental care quality assessment criteria for wage payment system.


Assuntos
Odontologia , Economia em Odontologia , Legislação Odontológica , Salários e Benefícios/legislação & jurisprudência , Humanos , Federação Russa
9.
Stomatologiia (Mosk) ; 96(1): 43-45, 2017.
Artigo em Russo | MEDLINE | ID: mdl-28317829

RESUMO

The paper presents statistical data on implant placement procedures in Central Research Institute of Dentistry and Maxillofacial Surgery (Moscow, Russia) in 2010-2015. In 64% of cases inadequate bone volume was attributed to alveolar bone atrophy. Bone deficiency was equally often in upper and lower jaws (in 49.3 and 50.7%, correspondently) but varied in forms with complex configurations to be more specific for maxilla. The study also includes a series of clinical cases illustrating implant placement procedures in anatomically unfavorable settings.


Assuntos
Perda do Osso Alveolar/cirurgia , Implantação Dentária/métodos , Mandíbula/patologia , Mandíbula/cirurgia , Maxila/patologia , Maxila/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Resultado do Tratamento
10.
Stomatologiia (Mosk) ; 95(4): 62-64, 2016.
Artigo em Russo | MEDLINE | ID: mdl-27636765

RESUMO

Jaw fragment with complete absence of 3 teeth in the chewing area was simulated with masticatory loads corresponding to different types of antagonists: full dentures, partial dentures, intact teeth, implant-refained restavations. Simulated consoled elements of different lengths and sizes of dental implants. The analysis of the stress-deformation state of the teeth construction in the ANSYS program. As a result, it was found that with increasing length of the cantilever element 2 times - stress in the bone grows almost linearly. By reducing the diameter of the implant - is quadratic.


Assuntos
Osso e Ossos/patologia , Prótese Dentária Fixada por Implante , Mastigação , Estresse Mecânico , Perda de Dente/terapia , Simulação por Computador , Modelos Dentários , Restauração Dentária Permanente , Prótese Parcial , Humanos , Arcada Osseodentária , Software
12.
Stomatologiia (Mosk) ; 94(4): 63-69, 2015.
Artigo em Russo | MEDLINE | ID: mdl-26343406

RESUMO

The comparative analysis of efficiency of various types of diagnostic templates for planning orthopedic treatment of 50 patients with partial or complete absence of teeth was performed. The patients were divided in 3 groups according to template manufacturing technique. All diagnostic templates made in accordance with clinical conditions allowed transfering digital data of the scheduled prosthetic construction for virtual implantation planning. Advantages and pitfalls of each template type are discussed.

13.
Stomatologiia (Mosk) ; 93(2): 40-2, 2014.
Artigo em Russo | MEDLINE | ID: mdl-24781128

RESUMO

The aim of the study was to evaluate the marginal fit changes in implant supported prosthetic bars by electroerosive processing. The experimental model included 9 bars supported by 2, 4 and 6 implant analogues (3 bars for each number of supports). Marginal gap size was assessed by digital microscopy before and after electroerosive processing conducted in 3 stages (10, 8 and 5 minutes long). Electroerosive processing proved to be useful tool for marginal fit correction.


Assuntos
Planejamento de Prótese Dentária/métodos , Prótese Dentária Fixada por Implante , Técnicas Eletroquímicas , Humanos
14.
Stomatologiia (Mosk) ; 92(3): 109-11, 2013.
Artigo em Russo | MEDLINE | ID: mdl-23752854

RESUMO

Microhemodynamics by gingival mucosa contour formation in implant placement sites was studied by laser doppler flowmetry. When installing healing abutment customized by Estelite Flow Quick noted reduction of tissue blood flow was revealed indicating the development of ischemia in the gingival mucosa. Conventional blood flow pattern restored in 7 days.


Assuntos
Implantação Dentária/efeitos adversos , Gengiva/irrigação sanguínea , Hemodinâmica , Fluxo Sanguíneo Regional , Adulto , Resinas Compostas/uso terapêutico , Feminino , Humanos , Fluxometria por Laser-Doppler , Masculino , Pessoa de Meia-Idade , Mucosa Bucal/irrigação sanguínea
15.
Stomatologiia (Mosk) ; 91(6): 8-11, 2012.
Artigo em Russo | MEDLINE | ID: mdl-23268209

RESUMO

Materials for custom-made impression trays used for impression by implant fixed restorations were compared in the study. The analysis included such values as flexural strength and elasticity modulus, impression material adhesion strength with the use of adhesive and without it. Light-cured plastic Elite LC Tray had the best rates of bending strength and elasticity modulus and the Protakril M had the highest adhesion strength both with and without adhesive.


Assuntos
Materiais para Moldagem Odontológica , Prótese Dentária Fixada por Implante , Análise do Estresse Dentário , Humanos , Metilmetacrilatos
17.
Stomatologiia (Mosk) ; 91(4): 46-8, 2012.
Artigo em Russo | MEDLINE | ID: mdl-23011335

RESUMO

Microcirculation dynamics in marginal gingiva by its contouring after second stage of dental implantation was examined by means of laser Doppler flowmetry. After installation of the 5.5 mm flared healing abutments there was a significant reduction in tissue blood flow indicating severe ischemia in marginal gingiva. Efficient prosthodontic treatment caused beneficial impact on microcirculation.


Assuntos
Implantação Dentária/efeitos adversos , Técnica de Moldagem Odontológica , Gengiva/irrigação sanguínea , Microcirculação , Adulto , Feminino , Humanos , Fluxometria por Laser-Doppler , Masculino , Pessoa de Meia-Idade
18.
Stomatologiia (Mosk) ; 90(4): 63-5, 2011.
Artigo em Russo | MEDLINE | ID: mdl-21983619

RESUMO

Study of physical-mechanic characteristics of connecting joints of beam construction after laser welding and hot metal adding was performed. Increase of microhardness of joints as well as small reduction of bending strength of prosthetic constructions was established.


Assuntos
Implantes Dentários , Soldagem em Odontologia , Testes de Dureza , Cobalto , Humanos , Lasers , Saturno
19.
Stomatologiia (Mosk) ; 90(2): 28-37, 2011.
Artigo em Russo | MEDLINE | ID: mdl-21512463

RESUMO

The message is about dental rehabilitation in difficult anatomo-topographic conditions of full adentia and high-grade atrophy of alveolar processes. The more high quality level decision of this problem using the methods of 3D-computer modeling during the diagnostic examination and planning of dental implantation is proposed.


Assuntos
Perda do Osso Alveolar/reabilitação , Simulação por Computador , Desenho Assistido por Computador , Implantação Dentária , Planejamento de Prótese Dentária/métodos , Planejamento de Assistência ao Paciente , Perda de Dente/reabilitação , Perda do Osso Alveolar/diagnóstico por imagem , Feminino , Humanos , Masculino , Radiografia , Perda de Dente/diagnóstico por imagem
20.
Stomatologiia (Mosk) ; 90(6): 50-1, 2011.
Artigo em Russo | MEDLINE | ID: mdl-22433644

RESUMO

Marginal fit of bar constructions on dental implants was revealed. It's investigated success of correction with soldering, laser welding, "cast to" method and spark erosion.


Assuntos
Implantes Dentários , Prótese Dentária Fixada por Implante , Soldagem em Odontologia/métodos , Soldagem/métodos , Humanos , Hidrogênio , Lasers
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