External Hex
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Screw loosening of different UCLA-type abutments after mechanical cycling
AIM: To evaluate the loss of applied torque (detorque) values in cast and pre-machined abutments for external hex abutment/implant interface of single implant-supported prostheses subjected to mechanical cycling. METHODS: Ten metal crowns were fabricated using two types of UCLA abutments: cast and pre-machined with metal base in NiCrTi alloy and tightened to
Braz. J. Oral Sci.. Publicado em: 2013-09
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2. Avaliação de uma máquina de testes de flexão rotacional e seus efeitos em dois sistemas de implante de hexágono externo / Evaluation of a rotating bending machine and its effects on two external hex implant system
O sucesso do tratamento com implantes depende do conhecimento teórico-prático do profissional, das condições biológicas do paciente, e também das propriedades mecânicas dos componentes protéticos e cirúrgicos. A complicação mecânica mais comum é a mobilidade da prótese relacionada ao afrouxamento ou fratura dos parafusos protéticos. Dois teste
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2011
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3. 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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4. Avaliação in vitro da variação do torque de remoção de parafusos para fixação de pilares protéticos submetidos a ciclos de parafusamento e desparafusamento / Torque removal evaluation of prosthetic screws after cycles of tightening and loosening: an in vitro study
O afrouxamento dos parafusos protéticos é descrito na literatura como uma das complicações mais frequentes das próteses sobre implantes. Durante sua confecção, os profissionais sentem necessidade de remover várias vezes as próteses e/ou componentes protéticos, soltando e re-apertando os parafusos repetidamente. O principal objetivo deste trabalho f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/12/2009
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5. Preload and torque removal evaluation of three different abutment screws for single standing implant restorations
Several authors still consider the mechanical problems of fracture and component loosening as the main causes of failure of implant-supported restorations. The purpose of this in vitro study was to compare the preload of three types of screw for transmucosal abutment attachment used in single implant-supported prosthesis through strain gauge and removal torq
Journal of Applied Oral Science. Publicado em: 2008-02
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6. Avaliação mecânica da estabilidade de parafusos protéticos em diferentes sistemas de retenção pilar/implante / Mechanical evaluation of the prosthetic screw stability from different implant/abutment retention systems
The preload screw variation for the first five minutes after each one of five torque/untorque sequences from different implant/abutment retention systems was evaluated. Strain gauges were attached over the cervical third of external hex, internal hex and Morse taper implants. A controlled torque/untorque procedure allowed the record from the preload and unto
Publicado em: 2008
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7. Avaliação da infiltração microbiana na interface implante-abutment em conexões tipo hexágono interno e cone-morse de implantes osseointegráveis / Evaluation of bacterial leakage at implant abutment interfaces of implants wiht internal hexagonal
The scientific literature has reported that dental implants can be affected by the oral microorganisms through the formation of a bacterial biofilm. The region most affected is the connection between the implant platform and the prosthetic abutment, particularly in implants with an external connection. Therefore, the region of the implant/abutment connection
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2007
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8. Estudo biomecânico da conexão implante/pilar protético em implantes do sistema cone morse / Biomechanical study of the implant/abutment connection in implants with internal tapered connectios
Internal tapered connections were developed to improve biomechanical properties and to reduce mechanical problems found in external and internal hex implants. This work presents the results of two studies that investigated the biomechanical properties of the implant/abutment connection in implants with internal tapered connections. The purpose of the first s
Publicado em: 2007