External Hexagon
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Análise tridimensional por elemento finito do comportamento biomecânico de próteses totais fixas implantossuportadas : efeito do tipo de conexão protética, cargas oclusais e número de implantes / Three-dimensional finite element analysis of biomechanics of implant-supported fixed prostheses : effect of connection system, occlusal load, and number of implants
The purpose of this study was to analyze the stress and strain distribution by three-dimensional finite element method in implant supported fixed prostheses and peri-implantar bone region, using two types of implant-abutment connection internal and external, correlated to the effect of axial loadings and number of implants. Virtual models were developed by s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/04/2011
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14. Resistance of three implant-abutment interfaces to fatigue testing
The design and retentive properties of implant-abutment connectors affect the mechanical resistance of implants. A number of studies have been carried out to compare the efficacy of connecting mechanisms between abutment and fixture. Objectives: The aims of this study were: 1) to compare 3 implant-abutment interfaces (external hexagon, internal hexagon and c
J. Appl. Oral Sci.. Publicado em: 01/07/2011
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15. Effect of cyclic load on vertical misfit of prefabricated and cast implant single abutment
OBJECTIVES: The purpose of this in vitro study was to evaluate misfit alterations at the implant/abutment interface of external and internal connection implant systems when subjected to cyclic loading. MATERIAL AND METHODS: Standard metal crowns were fabricated for 5 groups (n=10) of implant/abutment assemblies: Group 1, external hexagon implant and UCLA cas
Journal of Applied Oral Science. Publicado em: 2011-02
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16. Evaluation of abutment and perimplantar region deformation of implant-supported screwed prostheses: an study using strain gauges / Avaliação da deformação do intermediário e região perimplantar de próteses implanto-suportada unitárias parafusada: estudo através da extensometria
The dental implant depends on the supporting bone for its stability and functional longevity. Mechanical behavior and trabecular bone structure affect the interface with the implant. Such knowledge may provide a basis for improvements in the current implant function and design, decreasing bone crest resorption and failure at bone-implant junction. Adequate q
Publicado em: 2010
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17. Avaliação da microinfiltração bacteriológica na interface pilar/implante em Implantes Hexágono Externo com diferentes torques
O objetivo deste estudo foi avaliar a microinfiltração da interface pilar/implante de implantes hexágono externo (HE) com diferentes torques. Para isso, foram utilizados nove implantes HE torque externo, pilar cônico e seu respectivo parafuso, selecionados aleatoriamente e divididos em três grupos. Utilizados em duas fases do experimento. Uma suspençã
Publicado em: 2009
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18. In vitro integrity of implant external hexagon after application of surgical placement torque simulating implant locking
The aim of this study was to evaluate the integrity of the external hexagon of an implant system with internal and external hexagons but with prosthetic connection through the external hexagon (Internal Torque, IT) in comparison with that of an implant system with external hexagon with mount (External Hexagon, EH). A device was made to measure the rotational
Brazilian Oral Research. Publicado em: 2008-06
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19. Fracture of abutment screw supporting a cemented implant-retained prosthesis with external hexagon connection: a case report with sem evaluation
One of the causes of implant failures in cemented implant-retained prostheses is the fracture of abutment screw or UCLA abutment. This article reports a case of simultaneous fracture of two UCLA abutments screws occurring in an implant-supported prosthesis placed in the mandibular molar region. The fractured structures were examined under scanning electron m
Journal of Applied Oral Science. Publicado em: 2007-04
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20. Análise das características microscópicas do tecido peri-implantar em diferentes tipos de conexão protética em implantes / Comparative analysis of peri-implant soft tissue microscopic characteristics between two types of implant-prosthetic connections
The microscopic characteristics of the peri-implant soft tissue around different types of prosthetic interface for implants has been evaluated by means of histological analysis, 10 patients carrying implant supported bridges has been selected on the basis of the inclusion criteria and divided in two groups, with group I formed by five patients with external
Publicado em: 2007
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21. Analise fotoelastica da distribuição de tensões em implantes cilindricos rosqueados com hexagono externo e interno
This study analyzed the stress distribution around cylindrical screwed implants with external and internal hexagon simulating occlusion load. Blocks of PSM-1 (Photolastic mc., Realeigh, USA) were milled with dimensions of 35 x 25 x 6,1 mm where the implants were installed. Implants with diameter of 3.75 mm and high of 10.0 mm with external and internal hexag
Publicado em: 2003