Pullout Force
Mostrando 1-12 de 12 artigos, teses e dissertações.
-
1. Evaluation of stability of three different mini-implants, based on thread shape factor and numerical analysis of stress around mini-implants with different insertion angle, with relation to en-masse retraction force
RESUMO Objetivos: Avaliar a estabilidade de três diferentes tipos de mini-implantes, com base no fator formato da rosca (thread shape factor, TSF), e avaliar a tensão no local de inserção e no osso cortical ao redor dos mini-implantes inseridos com dois ângulos diferentes, durante a aplicação de força para retração. Métodos: Foram usados três d
Dental Press J. Orthod.. Publicado em: 2020-12
-
2. Numerical approach of the steel-concrete bond behavior using pull-out models
ABSTRACT This paper deals with the analysis of monotonic loading behavior in pull-out tests. The main objective is to obtain a reliable numerical model to represent the steel-concrete bond behavior using previously obtained experimental results. The tests were performed in RILEM pull-out specimen using 10 mm steel bar and concrete with compressive strength o
Matéria (Rio J.). Publicado em: 10/06/2019
-
3. INFLUENCE OF DIAMETER AND GEOMETRY IN THE TAPPING OF THE PILOT HOLE IN PEDICLE SCREWS
RESUMO Objetivo: Avaliar o torque de inserção e a força de arrancamento de cada parafuso com diferentes diâmetros e machos. Métodos: Foram utilizados no estudo blocos de poliuterano com orifício piloto de 2,7mm, sendo feito um grupo experimentais com 5 blocos sendo avaliado o torque de inserção com torquímetro e avaliado o arrancamento de cada par
Coluna/Columna. Publicado em: 2019-03
-
4. Effect of implant design and bone density in primary stability
AIM: To evaluate the influence of the format and surface treatment of implants, as well as the substrate used in primary stability. METHODS: Thirty-two Conexão® implants were used: 8 conical (CC) (11.5 x 3.5 mm) and 24 cylindrical (11.5 x 3.75 mm) - 8 external hexagon implants without surface treatment (MS), 8 external hexagon implants with double Porous t
Braz. J. Oral Sci.. Publicado em: 2013-09
-
5. In vitro analysis of the influence of surface treatment of dental implants on primary stability
Surface treatment interferes with the primary stability of dental implants because it promotes a chemical and micromorphological change on the surface and thus stimulates osseointegration. This study aimed to evaluate the effects of different surface treatments on primary stability by analyzing insertion torque (IT) and pullout force (PF). Eight samples of i
Brazilian Oral Research. Publicado em: 17/05/2012
-
6. Influência da pressão da água intersticial na resistência ao arrancamento de geogrelha em solo coesivo / Influence of pore water pressure in pullout resistance of geogrid in cohesive soil
O bom desempenho de uma estrutura de solo reforçado depende fundamentalmente da interação entre o solo de aterro e o elemento de reforço. A utilização de solos coesivos pode causar efeitos negativos à estabilidade da estrutura. Um elevado percentual de partículas finas na composição do solo pode favorecer ao desenvolvimento de pressões da água in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/12/2010
-
7. Effect of eugenol-based endodontic sealer on the adhesion of intraradicular posts cemented after different periods
OBJECTIVE: This study evaluated in vitro the influence of an eugenol-based sealer (EndoFill) on the retention of stainless steel prefabricated posts cemented with zinc phosphate and resin-based (Panavia F) cements after different periods of root canal obturation, using the pull-out test. MATERIAL AND METHODS: Sixty upper canines were decoronated and the root
Journal of Applied Oral Science. Publicado em: 2009-12
-
8. 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
-
9. Avaliação dos ensaios de microtração, push-out e pull-out: resistência de união entre pino de fibra e dentina radicular, análise de elementos finitos e microscopia confocal / Evaluation of microtensile, push-out and pull-out bond strength tests in the adhesion of fiber posts to intraradicular dentin. Finite element analysis and confocal microscopy
The aim of this study was to compare microtensile (MI), "push-out" (PS), modified "push-out" (PSM) and "pull-out" (PL) tests in the ability to accurately measure the bond strength of fiber posts luted inside root canals, at different root dentin levels, cervical, middle and apical. The evaluated parameters were: amount of premature failure (PF), coefficient
Publicado em: 2007
-
10. Ensaios mecânicos e estudo histológico da interface dos implantes vertebrais / Mechanical and histological studies of the vertebral screw interface
Spine surgery has developed a lot in the last years because of the evolution of the fixation system. The behavior of a screw in the bone is still unknown in many ways. Because the screw is the anchor of sustentation, this work tries to find the answers involving the pedicle screw fixation. To reach this objective we developed this work based on mechanical an
Publicado em: 2006
-
11. Forces on chromosomal DNA during anaphase.
In the course of anaphase, the chromosomal DNA is submitted to the traction of the spindle. Several physical problems are associated with this action. In particular, the sister chromatids are generally topologically intertwined at the onset of anaphase, and the removal of the intertwinings results from a coupling between the enzymatic action of type II DNA t
-
12. Molecular mechanisms determining the strength of receptor-mediated intermembrane adhesion.
The strength of receptor-mediated cell adhesion is directly controlled by the mechanism of cohesive failure between the cell surface and underlying substrate. Unbinding can occur either at the locus of the specific bond or within the bilayer, which results in tearing the hydrophobic anchors from the membrane interior. In this work, the surface force apparatu
The Biophysical Society.