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Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Can low-fusing glass application affect the marginal misfit and bond strength of Y-TZP crowns?
Abstract To evaluate the effect of different surface treatments on the marginal misfit and retentive strength between Y-TZP crowns and an epoxy resin. Forty (40) epoxy resin (G10) abutments (height: 5mm, conicity: 60, finish line: large chamfer) with equal dimensions were milled and included in polyurethane to simulate the periodontal ligament. Next, 40 Y-TZ
Braz. oral res.. Publicado em: 07/05/2018
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2. Evaluation of the adaptation of zirconia-based fixed partial dentures using micro-CT technology
The objective of the study was to measure the marginal and internal fit of zirconia-based all-ceramic three-unit fixed partial dentures (FPDs) (Y-TZP - LAVA, 3M-ESPE), using a novel methodology based on micro-computed tomography (micro-CT) technology. Stainless steel models of prepared abutments were fabricated to design FPDs. Ten frameworks were produced wi
Braz. oral res.. Publicado em: 2013-09
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3. Estudo de técnicas conceituais de recapeamento de quadril de cães / Study of conceptual techniques for dogs hip resurfacing
The study conceptually describes a surgical model for dog hip resurfacing technique. Hip arthroplasty was developed to restore joint mobility and relieve of human patients pain. In animals, especially dogs, total arthroplasty is a surgical procedure commonly used to correct traumatic, degenerative and inflammatory hip diseases and alleviate pain. The resurfa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2011
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4. Desenvolvimento de união de multimateriais através de rebitagem por injeção (Injection Clinching Joining) / Development of multimaterial joints through injection clinching joining
Multimaterial structures are currently a technologically attractive field of research. The growing use of polymer composites replacing metals in structures aiming for weight and emission reduction is part of the motivation of this study. The currently used techniques adhesive bonding and mechanical fastening are limited in certain aspects, opening a path for
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2011
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5. Standards of teeth preparations for anterior resin bonded all-ceramic crowns in private dental practice in Jordan
OBJECTIVES: To investigate if general dental practitioners (GDPs) in private practice in Jordan follow universal guidelines for preparation of anterior teeth for resin bonded all-ceramic crowns (RBCs). MATERIAL AND METHODS: A sample (n=100) of laboratory models containing 208 tooth preparations for IPS Empress and In Ceram, featuring work from different GDPs
J. Appl. Oral Sci.. Publicado em: 24/06/2011
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6. AvaliaÃÃo de tensÃes residuais de soldagem em chapas planas do aÃo estrutural ASTM A516 g70 / Welding residual stress evaluation in flat samples of structural ASTM A516 G70 steel
O objetivo principal desse trabalho foi avaliar o efeito do procedimento de soldagem empregado, com foco na energia de soldagem, no tipo de chanfro empregado e na tÃcnica de soldagem utilizada, sobre o nÃvel e a distribuiÃÃo das tensÃes residuais resultantes em junta submetida à soldagem multipasse. Foi avaliado tambÃm o efeito da corrente e da veloci
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/01/2009
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7. Correlation between margin fit and microleakage in complete crowns cemented with three luting agents
Microleakage can be related to margin misfit. Also, traditional microleakage techniques are time-consuming. This study evaluated the existence of correlation between in vitro margin fit and a new microleakage technique for complete crowns cemented with 3 different luting agents. Thirty human premolars were prepared for full-coverage crowns with a convergence
Journal of Applied Oral Science. Publicado em: 2008-02
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8. Influence of the tool edge geometry on specific cutting energy at high-speed cutting
This paper presents specific cutting energy measurements as a function of the cutting speed and tool cutting edge geometry. The experimental work was carried out on a vertical CNC machining center with 7,500 rpm spindle rotation and 7.5 kW power. Hardened steels ASTM H13 (50 HRC) were machined at conventional cutting speed and high-speed cutting (HSC). TiN c
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-09
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9. Fracture strength of different techniques for re-attachment of teeth submitted or not to endodontic treatment / Resistência à fratura de técnicas de colagem empregadas para restauração de dentes fraturados com ou sem tratamento endodôntico
The aim of this study was to compare the fracture strength of three techniques used to reattach tooth fragments in sound and endodontically-treated fractured teeth either associated or not with fiber post placement. Ninety human lower incisors were randomly divided into three groups of 30 teeth each. In group A teeth were not subjected to endodontic treatmen
Publicado em: 2007
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10. ANALYSIS OF STRESS DISTRIBUTION IN DIFFERENT FINISHING LINES OF SINGLE ALL-CERAMIC CROWNS / ANÁLISE DA DISTRIBUÇÃO DE TENSÕES EM DIFERENTES TERMINAÇÕES CERVICAIS DE COROAS UNITÁRIAS TOTALMENTE CERÂMICAS
This work presents a finite element analysis of the stress distribution in teeth restored by single all-ceramic crowns with different types of finishing lines. In order to obtain the 2-D numerical model, three models of the mandibular molar teeth region were created considering a real anatomic piece and were then used to simulate the application of all-ceram
Publicado em: 2003
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11. Influencia de fontes de calor de fundição, configurações marginais e alivio interno, na adaptação cervical e interna de coroas totais metalicas
Regarding the existenting difficulties in making casting restorations, where the minimal cervical discrepancy lead to a future serious clinical problems, this research will analyse the cervical and internal fits of total metal crowns with or not internal relief (die-spacing, acid conditioning and sandblaster with aluminiun oxide), making with palladium-silve
Publicado em: 1999
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12. Influencia da geometria da junção soldada na resistencia a fadiga de ligas do sistema cobalto-cromo
The purpose of this study was to investigate the fatigue stength of the system Co-Cr (Dentorium and Degussa), submitted or not to the procedure conventional soldering. Cylindrical eighty specimens with 1,7 mm in diameter were casted utilizing oxi-acetilene torch for each alloys kind. The soldering procedure was realizated in sixty specimens of each alloy and
Publicado em: 1998