Dental Abutments
Mostrando 13-24 de 34 artigos, teses e dissertações.
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13. Desajuste marginal e influencia na pre-carga de parafusos e nas tensões induzidas as fixações de pilares metaloplasticos sobre-fundidos / Marginal misfit and influence in the pre-load and the stress-induced setting of the metaloplastic abutments
Castable UCLA abutments are of wide applicability in dental implants, because they allow the manipulation in the laboratory at low cost and individualization of abutments for each patient. However, they show the worse results of marginal adaptation then the fabricated, although these aggregate costs significantly higher. UCLA premachined abutments for castin
Publicado em: 2010
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14. ANÃLISE DE SISTEMAS DE IMPLANTES DENTÃRIOS EM MANDÃBULAS EDÃNTULAS COM APLICAÃÃO DE CARREGAMENTO IMEDIATO / Study of the systems of dental implantations for edentulous mandibula with immediate load
The present study aimed at obtaining comparative elements among the guided systems of fixed complete denture with 4 osseointegrated implants with immediate loading, considering the importance of understanding the implant project as a process where biomaterials and biomechanics are assessed. The three-dimensional finite element method was used to analyze the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/10/2009
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15. Analise fotoelastica e extensometrica das tensoes induzidas por estruturas de protese sobre implantes fabricadas pelas tecnicas monobloco, soldagem de borda e metodo CAD/CAM / Photoelastic and strain gauge analysis of tensions induced over implant superstructures manufactured through one-pierce technique., bolder soldering and CAD/CAM method, border soldering and one-piece technique
The lack of passivity of the implant supported prosthesis may lead to mechanical and biological disorders over the implants. By the photoelastic and strain gauge analysis, the purpose of this research was to evaluate the stress over the implants after tightening the prosthesis superstructure over five dental implants. A stainless steel matrix was manufacture
Publicado em: 2009
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16. Analise fotoelastica da distribuição de tensão em diferentes sistemas de overdentures sobre implantes osseointegrados / Photoelastic analysis of the distribution of stress in different systerms of overdentures on osseous-integrated implants
The aim of this study was to evaluate through photoelastic analysis, the distribution of generated stress around implants and adjacent bone tissue, using differents implant-retained overdentures designs. Over an edentulous human mandible, achieve from a human model, 2 or 4 micro-unit replications abutments were embedded (Master, Conexao - Sao Paulo - SP) set
Publicado em: 2009
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17. Influência do formato do pilar na capacidade retentiva de copings metálicos cimentados sobre implantes
This study evaluated the influence of the abutment design on the retention of cementretained, implant-supported metallic copings. Two abutments of the same system, with the same height, indications and total occlusal convergence, but of different designs were evaluated. Ten RN SynOcta abutments and ten RN solid titanium abutments both manufactured by Strauma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2008
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18. Assessment of the tensile strength of hexagonal abutments using different cementing agents
The aim of this study was to assess the uniaxial tensile strength after thermal cycling in replicas of CeraOne®abutments (abutment and coping sets), using four types of cements (n = 10). A zinc phosphate cement (Fosfato de Zinco®/ SSW), a resin-modified glass ionomer cement (RelyX®luting / 3M-ESPE), a zinc oxide-eugenol cement (ZOE®/ SSW) and a zinc oxid
Brazilian Oral Research. Publicado em: 2008-12
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19. Implant supported prosthesis : influence of abutment and porcelain firing cycles on misfit and stress around implants / Proteses fixas implanto-retidas : influencia do pilar intermediario e dos ciclos de cocção da ceramica nos desajustes e nas tensões induzidas as fixações
It is speculated that porcelain firing cycles cause an increase on marginal misfit. This effect is imagined to origin an increase on strains around implants, when screwing the metallic frameworks, and it is supposed to be decreased by the use of an abutment between the framework and the implant. Thus, the aim of this study was to evaluate the influence of th
Publicado em: 2008
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20. Influência do tipo de pôntico, número de pilares e tipo de aplicação de carga na distribuição das tensões em prótese fixa em cantilever análise por elementos finitos
Cantilever fixed prosthodontics are satisfactory rehabilitation alternatives when osseointegrated implants are not indicated, which justifies the important knownledgment with respect to a correct indication and technical procedures. The aim of this study was to evaluate the stress distribution on support dental structures and prosthesis framework by finite e
Publicado em: 2008
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21. Desadaptação marginal na interface de pilares cerâmicos procera parafusados a diferentes sistemas de implantes. / Misfit at the interface of procera ceramic abutments and different implant systems.
Embora sejam fabricados pela Nobel Biocare, as vantagens mecânicas e estéticas dos pilares cerâmicos personalizados Procera têm levado à sua utilização em associação com outros sistemas de implantes compatíveis com o sistema Bränemark. Estudos chamam a atenção para o fato de que a associação de componentes de empresas diferentes das dos fabric
Publicado em: 2008
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22. In vitro evaluation of the precision of working casts for implant-supported restoration with multiple abutments
OBJECTIVE: The purpose of this study was to compare the accuracy of two working cast fabrication techniques using strain-gauge analysis. METHODS: Two working cast fabrication methods were evaluated. Based on a master model, 20 working casts were fabricated by means of an indirect impression technique using polyether after splinting the square transfer coping
Journal of Applied Oral Science. Publicado em: 2007-06
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23. Tensile strenght of NiCr crowns cemented upon usinated titanium alloy abutments, LASER irradiated or not / Resistência à remoção por tração de coroas NiCr cimentadas sobre munhões usinados em liga de titânio, irradiados ou não por LASER
By means of tensile essays, NiCr total crowns were removed from usinated tronco-conical abutments composed by an Ti-6Al-4V alloy; the performance of 4 cementig agents (S. S. White zinc phoshate, Ketac Cem Easymix glass ionomer, RelayX Luting 2 composite resin and Panavia 21 TC special acrylic resin) was evaluated. Among a total of 50 abutments, 40 were used
Publicado em: 2007
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24. Correction of the borders and screw seat surfaces of implantretained frameworks by spark erosion : influence on the marginal misfit and on the strains transferred to abutments / Correção por eletroerosão de bordas e bases de assentamento de parafusos de estruturas implanto-retidas : influencia no desajuste marginal e nas tensões transferidas aos abutments
A longevidade das reabilitações implanto-retidas é comprometida quando tensões provenientes do desajuste marginal e conduzidas às fixações causam dano à junção osso-implante. Este trabalho teve o propósito de avaliar os desajustes marginais e as tensões aferidas nos abutments de infra-estruturas implanto-retidas fundidas em titânio comercialment
Publicado em: 2007