Base de dados : LILACS
Pesquisa : D01.220.175 [Categoria DeCS]
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Id: lil-587933
Autor: Vasconcellos, Luis Gustavo Oliveira de; Zogheib, Lucas Villaça; Souza, Rodrigo Othávio de Assunção e; Nogueira Jr, Lafayette; Bottino, Marco Antônio.
Título: O efeito da temperatura de queima da camada de opaco na resistência flexural de uma cerâmica vítrea submetida à cocção sobre uma liga decobalto-cromo / Opaque layer firing temperature effect on the flexural strength of glass ceramic fused to cobalt-chromium alloy
Fonte: Braz. dent. sci;12(4):25-33, out.-dez. 2009. ilus, graf.
Idioma: pt.
Resumo: Este estudo avaliou a influência da temperatura de queima da camada de opaco na resistência de união entre uma liga de cobalto-cromo e uma cerâmica, após serem submetidos ao ensaio de flexão de três pontos. Considera-se a hipótese: o aumento da temperatura de queima do opaco melhora a resistência flexural da cerâmica aplicada sobre o metal. Barras metálicas (25x3x0,5mm) (n=30) foram fundidas em Co-Cr e as áreas centrais das barras (8x3mm) foram jateadas com partículas de óxido de alumínio de 150μm e divididas em 3 grupos de acordo com a temperatura de queima da camada de opaco (n=10): G1 (grupo controle) – 900°C; G2 – 950°C e G3 – 1000°C. As cerâmicas opaca e de corpo (Vita Omega 900) foram queimadas sobre a área central. Os espécimes foram mantidos em água destilada à 37° C durante 24 horas e a seguir foram submetidos ao teste de flexão de três pontos. Após o teste, os tipos de falhas foram classificados. Os dados obtidos foram analisados estatisticamente (Kruskal-Wallis 1 e teste de Dunn , μ=0,05). A diferença dos valores médios de resistência flexural foi estatisticamente significante (p=0,004), sendo que os grupos G2- 19,84±4,24N e G3- 22,43±5,94N exibiram valores de resistência flexural maiores que o grupo G1-12,525±1,08N. Concluiu-se que o aumento da temperatura de queima da camada de opaco melhorou significantemente os valores de resistência flexural. O modo de falha predominante foi adesiva na interface metal/cerâmica para o grupo G1 e exclusivamente coesiva na zona interfacial camada de opaco/Co-Cr com presença de cerâmica na superfície dos grupos G2 e G3.

This study evaluated the opaque layer firing temperature on the flexural strength of a ceramic fused to commercial cobaltchromiumalloy (Co-Cr). The hypotheses were that opaque layer temperature increasing get higher the metal/ceramicbond strength. Metallic frameworks (25x3x0.5 mm) (n=30) were cast in Co-Cr and airborne particle abraded with 150μm aluminum oxide at the central area of the frameworks (8x3 mm) and after divided into three groups, according toopaque layer firing temperature (n=10): G1 (control) – 900°C; G2- 950°C and G3- 1000°C. Opaque ceramic were appliedand the glass ceramic (Vita Omega 900, Vita Zahnfabrick, Bad Sãckingen, Germany) was fired onto them (thickness:1 mm). The specimens were kept in distilled water at 37ºC for 24 hours, after that it were submitted to three pointsflexural strenght test. After the test, failure types were noted. The data were analyzed using 1 way Kruskal-Wallis andDunn test (5%). The difference in mean flexure strength values were statistically significant (p=0,004). The groups G2-19,84±4,24N and G3- 22,43±5,94N presented higher flexure strength values than G1- 12,525±1,08N. It was concludedthat the opaque layer temperature increasing improved the flexure bond strength values significantly. The failure typepredominant was adhesive at metal/ceramic interface for group G1 sample and exclusively cohesive at the opaqueceramic/Co-Cr interfacial zone with presence of ceramic on the metal surface for groups G2 and G3.
Descritores: Cerâmica
Ligas Metalo-Cerâmicas
Ligas de Cromo
Materiais Dentários
Responsável: BR243.1 - Serviço Técnico de Biblioteca e Documentação


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Id: biblio-1104370
Autor: El-Baz, Rady; Fayad, Mostafa; Abas, Mohamed; Shoeib, Ahmad; Gad, Mohammed Moustafa; Helal, Mohamed Ahmed.
Título: Comparative study of some mechanical properties of cobalt chromium and polyether ether ketone thermoplastic removable partial denture clasps: an In-vitro Study / Estudo comparativo de algumas propriedades mecânicas dos grampos parciais removíveis termoplásticos removíveis termoplásticos de cobalto cromo e éter cetona: um estudo in vitro
Fonte: Braz. dent. sci;23(3):1-6, 2020. ilus, tab.
Idioma: en.
Resumo: Objective: was to evaluate the retentive force, fatigue resistance and deformity of clasps made from two materials cobalt chromium and poly ether ether ketone (PEEK). Material and Methods: sixteen models were fabricated,each one having lower 1st molar. Models were divided into two groups according to materials,group I (GI) for cobalt chromium (Co-Cr) and group II (GII) for PEEK. Each testing models and its clasps were mounted inside universal testing machine, the retention was measured by applying withdrawal force to it by this machine at 5 mm/min. The Fatigue resistance is measured by the reduction in retention through repeated insertion and removal cycles using robota chewing simulator. Removal and insertion cycling of clasps was carried out for 360, 730, 1080, 1,440, 2,116 and 2,880 cycles (corresponding to 3, 6, 9, 12, 18 and 24 months of simulated clinical use of a RPD) to simulate the fatigue resistance test. Deformity was measured before and after each cycling using a digital micrometer. Statistical analysis was done by 2-way-ANOVA test to detect significance effects of each variable. Results: Retention and fatigue resistance, after 360, 730, 1080, 1,440, 2,116 and 2,880 cycles totally the difference between Co-Cr and PEEK groups was statistically non-significant (P = 0.0980> 0.05) where (Co-Cr > PEEK). Deformation results, regardless to evaluation time, Co-Cr group recorded statistically significant higher deformation mean value than PEEK group (P = 0.008 < 0.05).Regardless to material group, deformation mean value changed nonsignificantly by time (P = 0.2882> 0.05). Conclusion: PEEK clasps (1.0 mm in cross section diameter) engage 0.50 mm undercut provide sufficient retention nearly similar that of Co-Cr clasps.(AU)

Objetivo: o objetivo foi avaliar a força de retenção, a resistência à fadiga e a deformidade dos grampos fabricados com dois materiais diferentes: cromo-cobalto (Co-Cr) e poliéter-éter-étercetona (PEEK). Materiais e métodos: dezesseis modelos foram confeccionados, cada um com 1º molar inferior. Os modelos foram divididos em dois grupos de acordo com o material: grupo I Co-Cr e grupo II para PEEK. Cada modelo de teste universal e seus grampos foram montados em uma máquina de teste universal. A retenção foi medida aplicando força de retirada por esta máquina a 5 mm/min. A resistência à fadiga foi medida pela redução na retenção através de ciclos repetidos de inserção e remoção usando um simulador do ciclo de mastigação. O ciclo de remoção e inserção dos grampos foi realizado por 360, 730, 1080, 1.440, 2.116 e 2.880 ciclos (correspondendo a 3, 6, 9, 12, 18 e 24 meses de uso clínico simulado de um RPD) para simular o teste de resistência à fadiga. A deformidade foi medida antes e após cada ciclo, usando um micrômetro digital. A análise estatística foi realizada pelo teste ANOVA de 2 fatores para detectar os efeitos de significância de cada variável. Resultados: A retenção e a resistência à fadiga após 360, 730, 1080, 1.440, 2.116 e 2.880 ciclos entre os grupos Co-Cr e PEEK não mostrou diferença estatisticamente significativa (p = 0,0980> 0,05), onde (Co-Cr> PEEK). Para os resultados da deformação, independentemente do tempo de avaliação, o grupo Co-Cr registrou um valor médio de deformação maior, com diferença estatística significativa, quando comparado com o grupo PEEK (p= 0,008 < 0,05). Independentemente do grupo de material, o valor médio da deformação foi alterado de forma não significativa pelo tempo (p= 0,2882> 0,05). Conclusão: os grampos PEEK (1,0 mm de diâmetro da seção transversal) engatam 0,50 mm retenção quase semelhante à dos grampos Co-Cr (AU)
Descritores: Resinas Sintéticas
Ligas de Cromo
Prótese Parcial
Tipo de Publ: Estudo Comparativo
Responsável: BR243.1 - Serviço Técnico de Biblioteca e Documentação


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Id: lil-601428
Autor: Baeza Robleto, Julia Selene; Gasca Argueta, Gabriela; Lara Carrillo, Edith.
Título: Uso de endopostes de ionómero de vidrio en odontopediatría / Glass ionomer posts in pediatric dentistry
Fonte: Odontol. pediatr. (Lima);10(1):55-61, ene.-jun. 2011. ilus.
Idioma: es.
Resumo: La caries dental afecta a todos los grupos de edad, sin preferencia por grupo de edad, raza o género. La caries temprana de la infancia se presenta en menores de seis años. En el presente trabajo se reporta el caso de un paciente femenino de cuatro años ocho meses de edad con caries temprana de la infancia en el incisivo lateral superior izquierdo en el cual se realizó una pulpectomía y fue rehabilitado con la confección directa de un endoposte de ionómero de vidrio de triple curado como rehabilitación para la colocación de corona de cromo-níquel.

The dental caries affect almost all people without predilection of age or gender. The early childhood caries has a high prevalence, especially, in children before six years-old. The next case report shows a four years eight months old female patient diagnosed with early childhood caries on the left upper lateral incisor. First, the patient was treated with a pulpotomy followed by direct intra-canal post used luting cement of glass ionomer. The finally step of rehabilitation consisted on the cement of a chromium-nickel crown.
Descritores: Ligas de Cromo
Cárie Dentária
Cimentos de Ionômeros de Vidro/uso terapêutico
Incisivo
Odontopediatria
Limites: Humanos
Feminino
Pré-Escolar
Tipo de Publ: Relatos de Casos
Responsável: PE1.1 - Oficina Universitária de Biblioteca


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Id: biblio-1094899
Autor: Monteiro, Laise Pena Braga; Sano, Issae Sousa; Cunha, Suelen Reis; Klautau, Eliza Burlamaqui; Alves, Bruno Pereira.
Título: Evaluation of ceramic flexural strength of a cobalt-chromium alloy subjected to airborne particle abrasion and tungsten inert gas welding
Fonte: Braz. j. oral sci;18:e191443, jan.-dez. 2019. ilus.
Idioma: en.
Resumo: Aim: The aim of this study was to evaluate the influence of tungsten inert gas (TIG) welding and airborne particle abrasion using aluminum oxide particles on the flexural strength of a joint between ceramic and cobalt-chromium alloys. Methods: The specimens were cast and welded using TIG, then divided into 6 groups (n = 10) and subjected to blasting with 250 µm, 100 µm, and 50 µm aluminum oxide particles. Ceramic systems were applied to the central part of all specimens. A three-point bending test using a velocity of 0.5 mm/m was performed on the specimens to measure flexural strength. Data were analyzed using two-way analysis of variance and Tukey's test. Results: TIG welding demonstrated the lowest resistance compared with the non-welded groups. Airborne particle abrasion using 250 µm aluminum oxide particles demonstrated greater resistance in the welded groups (p < 0.05). Mixed faults were found in all specimens. Conclusion: TIG welding decreased the bond strength, and the particle size of aluminum oxide did not affect the metal-ceramic bond in groups without TIG welding
Descritores: Soldagem em Odontologia
Ligas de Cromo
Materiais Dentários
Porcelana Dentária
Responsável: BR218.1 - Biblioteca Carlos Henrique Robertson Liberalli


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Id: biblio-1088042
Autor: Osório, Suzimara dos Reis Géa; Osório, Agenor; Amaral, Flávia Lucisano Botelho do; Flório, Flávia Martão.
Título: The effect of heat treatment on sliding mechanics of stainless steel orthodontic wires
Fonte: Braz. j. oral sci;18:e190285, jan.-dez. 2019. tab.
Idioma: en.
Resumo: Aim: The aim of this study was to evaluate the effect of heat treatment (tempering) on the sliding mechanics of stainless steel Chrome Nickel (CrNi) orthodontic wires. Methods: A universal testing machine EMIC DL 2000 was used at a speed of 10 mm/minute for reading-out the sliding strength and friction between brackets and wires, by simulating the sliding mechanics in a fixed orthodontic appliance. The results were submitted to ANOVA variance test for statistical analysis at the level of 5% (p<0.05). Results: The results indicated that depending on the type of bracket, wire and type of treatment, the groups without heat treatment showed higher mean static friction values, except for groups with CrNi GAC wire and conventional brackets, which showed no significant difference with and without heat treatment; and the group with self-ligated brackets and CrNi GAC wires that showed the lowest mean static friction values with heat treatment. Conclusion: The heat treatment reduced the static friction values on CrNi Morelli wires for any combination of brackets (conventional and self-ligated types) and commercial brands. For the CrNi GAC wires, there was a reduction in friction values only in the combination with In-Ovation R/GAC self-ligated brackets
Descritores: Fios Ortodônticos
Ligas de Cromo
Braquetes Ortodônticos
Responsável: BR218.1 - Biblioteca Carlos Henrique Robertson Liberalli


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Texto completo SciELO Brasil
Rubo, José Henrique
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Id: lil-779907
Autor: SUEDAM, Valdey; MORETTI NETO, Rafael Tobias; SOUSA, Edson Antonio Capello; RUBO, José Henrique.
Título: Effect of cantilever length and alloy framework on the stress distribution in peri-implant area of cantilevered implant-supported fixed partial dentures
Fonte: J. appl. oral sci;24(2):114-120, Mar.-Apr. 2016. tab, graf.
Idioma: en.
Projeto: São Paulo Research Foundation; . São Paulo Research Foundation.
Resumo: ABSTRACT Because many mechanical variables are present in the oral cavity, the proper load transfer between the prosthesis and the bone is important for treatment planning and for the longevity of the implant-supported fixed partial denture. Objectives To verify the stress generated on the peri-implant area of cantilevered implant-supported fixed partial dentures and the potential effects of such variable. Material and Methods A U-shaped polyurethane model simulating the mandibular bone containing two implants (Ø 3.75 mm) was used. Six groups were formed according to the alloy’s framework (CoCr or PdAg) and the point of load application (5 mm, 10 mm and 15 mm of cantilever arm). A 300 N load was applied in pre-determined reference points. The tension generated on the mesial, lingual, distal and buccal sides of the peri-implant regions was assessed using strain gauges. Results Two-way ANOVA and Tukey statistical tests were applied showing significant differences (p<0.05) between the groups. Pearson correlation test (p<0.05) was applied showing positive correlations between the increase of the cantilever arm and the deformation of the peri-implant area. Conclusions This report demonstrated the CoCr alloy shows larger compression values compared to the PdAg alloy for the same distances of cantilever. The point of load application influences the deformation on the peri-implant area, increasing in accordance with the increase of the lever arm.
Descritores: Ligas de Cromo/química
Prótese Dentária Fixada por Implante/métodos
Ligas Dentárias/química
Análise do Estresse Dentário
-Paládio/química
Valores de Referência
Prata/química
Estresse Mecânico
Teste de Materiais
Reprodutibilidade dos Testes
Análise de Variância
Planejamento de Prótese Dentária
Força Compressiva
Torque
Prótese Parcial Fixa
Módulo de Elasticidade
Responsável: BR1.1 - BIREME


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Texto completo SciELO Chile
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Id: lil-780555
Autor: Marcus Vaccarezza, Natalia; Marchesani Carrasco, Francisco; Grandón Villegas, Fernando; Galdames Gutiérrez, Blas; Niklitschek Tapia, Daniela; Millanao Caro, Leyla.
Título: Rehabilitación de rebordes severamente atróficos mediante prótesis híbridas confeccionadas con tecnología de sinterización láser cromo-cobalto: reporte de caso / Rehabilitation of severely atrophic full arches using hybrid prostheses made with chrome-cobalt laser sintering technology: A case report
Fonte: Rev. clín. periodoncia implantol. rehabil. oral (Impr.);9(1):13-18, abr. 2016. ilus.
Idioma: es.
Resumo: Prótesis híbridas metal-acrílico implanto-retenidas han brindado solución funcional y estética para rehabilitar arcos completos severamente atróficos, constituyendo una alternativa a cirugías reconstructivas más complejas. La subestructura protésica debe ajustar pasivamente sobre los implantes. Con la tecnología CAD-CAM el diseño manual de las subestructuras, mediante cera perdida, se ha reemplazado por diseño digital mediado por software. La tecnología de sinterizado láser en la confección de subestructuras metálicas tiene como ventajas la disminución de acumulación de errores, rapidez y diseño de geometrías complejas según las necesidades del caso. Caso Paciente desdentada total. Se planifica prótesis híbrida maxilar (8 implantes) y mandibular (Revitalize®) con subestructuras en aleación Cr-Co mediante sinterizado láser, que presenta resultados a largo plazo similares a estructuras nobles, con menor costo y alta predictibilidad. Conclusiones Prótesis híbridas con subestructura Cr-Co mediante sinterizado láser podrían mejorar el pronóstico al incorporar CAD-CAM en su confección al obtener ajustes de precisión.

Abstract Implant-retained metal-acrylic hybrid prostheses provide a functional and aesthetic solution to rehabilitate severely atrophic complete arches, and are an alternative to more complex reconstructive surgeries. the prosthetic substructure must adjust passively on the implants. With the CAD-CAM technology, the manual design of the substructures, by lost wax, has been replaced by digital design. Laser sintering technology in the production of metal substructures has advantages, such as, decreased accumulation of errors, fabrication speed and design of complex geometry, according to the needs of the case. Case report Hybrid prostheses in the maxilla (8 implants) and jaw (Revitalize®) were planned in a patient with no teeth, using Co-Cr alloy substructures by laser sintering, which have similar long-term results as obtained with noble structures, but with lower cost and high predictability. Conclusions Hybrid prostheses with Co-Cr substructures using laser sintering could improve prognosis by incorporating CAD-CAM in their preparation to obtain fine adjustments.
Descritores: Perda do Osso Alveolar/reabilitação
Planejamento de Prótese Dentária/métodos
Desenho Assistido por Computador
Lasers
-Ligas de Cromo
Limites: Humanos
Feminino
Tipo de Publ: Relatos de Casos
Responsável: CL58.1 - Biblioteca


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Id: biblio-914455
Autor: Resende, Lucy Coimbra de Magalhães; Araújo, Túlio Pessoa de; Resende, Ângelo Barbosa; Cavalcanti, Yuri Wanderley; Almeida, Leopoldina de Fátima Dantas de; Padilha, Wilton Wilney Nascimento; Carvalho, Rejane de Andrade; Sousa, Samira Albuquerque de.
Título: Fracture Resistance of Endodontically Treated Teeth Restored with Different Types of Intracanal Posts
Fonte: Pesqui. bras. odontopediatria clín. integr;17(1):e2995, 13/01/2017. tab, ilus, graf.
Idioma: en.
Resumo: Objective: To evaluate the fracture resistance of endodontically treated teeth restored with different types of intracanal posts. Material and Methods: Sixty human upper central incisors (n = 60) were divided according to the performance of different protocols for restoration with intracanal posts. Groups without endodontic treatment (NT) and with endodontic treatment (TR) without placement of intracanal posts, served as controls. The experimental groups received endodontic treatment and were restored with: fiberglass post with composite resin filling core (PFV-NP); carbon fiber post with composite resin filling core (PFC-NP); nickel-chromium metal cast and core posts (NiCr); or copper-aluminum metal cast and core posts (CuAl). The specimens were then tested to determine the maximum fracture resistance and the failure types of fracture (infra-crestal and supra-crestal). Data were analyzed by one-way ANOVA and Tukey test (α<0.05). Results: Increased fracture resistance was observed for NT group (p<0.05). Within endodontically treated teeth groups, NiCr showed higher resistance to fracture, differing statistically from groups FV+NP and FC+NP (p<0.05). Higher frequency of infra-crestal fractures was observed in NT and TR groups. Conclusion: The installation of nickel-chromium intracanal cast and core posts contributed to higher fracture resistance and lower risk of fractures difficult to repair.
Descritores: Ligas de Cromo
Pinos Dentários
Endodontia
Técnica para Retentor Intrarradicular
Fraturas dos Dentes/diagnóstico
-Análise de Variância
Brasil
Estudos de Casos e Controles
Incisivo
Dente não Vital
Limites: Humanos
Tipo de Publ: Estudo de Avaliação
Responsável: BR1822.9 - Associação de Apoio à Pesquisa em Saúde Bucal


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Id: biblio-906501
Autor: Mercado Montañez, Francisco.
Título: Tratamiento de anquilosis temporomandibular con materiales aloplásticos en niños: reporte de 3 casos / Treatment of temporomandibular joint ankylosis with alloplastic materials in children: report of 3 cases
Fonte: Rev. ADM = ADM;75(1):55-60, ene.-feb. 2018. ilus.
Idioma: es.
Resumo: La anquilosis de la articulación temporomandibular en niños continúa siendo una patología presente a pesar de los avances médicos y sociales. El tratamiento de esta patología en niños tiene como objetivos restablecer la apertura bucal y mejorar la estética facial, cuando se presentan hipoplasias o micrognatias asociadas. El objetivo del uso de materiales aloplásticos para el tratamiento de esta patología en niños es evitar la morbilidad y los gastos que ocasiona la toma y aplicación de injertos, para esto, durante 15 años, en la Unidad Médica de Alta Especialidad del Instituto Mexicano del Seguro Social, Torreón, Coahuila, México, Departamento de Cirugía Maxilofacial, se ha establecido el protocolo de tratar esta patología en niños con el uso de prótesis metálicas de cavidad glenoidea, en lugar de injertos costales o de otro tipo, además de tratar las hipoplasias o micrognatias en un mismo tiempo quirúrgico con el uso de aparatos distractores óseos, teniendo excelentes resultados a mediano plazo, sin daño a estructuras anatómicas ni a los procesos de crecimiento y desarrollo de los pacientes. Se utilizan prótesis prediseñadas de cromo, cobalto, molibdeno, que se adaptan adecuadamente a las estructuras óseas, siendo un material utilizado ya en otras áreas de la ortopedia en niños, concluyendo que se trata de una buena opción de tratamiento que disminuye el riesgo, frecuencia y costos de cirugías de mayor complejidad y que puede llevarse a cabo de manera segura y predecible. En este artículo se reportan tres casos de niños con anquilosis temporomandibular tratados con este método con buenos resultados (AU)

Temporomandibular joint ankylosis in children is actually a pathology still present despite the medical and social advances. The treatment of this pathology in children has restored the buccal opening and improve the facial aesthetics when hypoplasia and micrognathia are present. The purpose of using alloplastic material for treatment of this disease in children is to prevent morbidity and expenses related to making and implementing grafts, for this, for 15 years in the Medical Unit of High Specialty the Mexican Institute of Social Security, Torreon, Coahuila, Mexico, Department of Maxillofacial Surgery, has been established protocol to treatment this pathology in children with the use of metal glenoid prosthesis instead of rib grafts or otherwise in addition to treating hypoplasias or micrognatias in the same surgical time with the use of distracting devices bone, having excellent results in the medium term without damage to anatomical structures or processes of growth and development of patients. The prosthesis used predesigned chromium, cobalt, molybdenum, which are suitably adapted to the bone structures, with a material already used in other areas of orthopedics in children, concluding that this is a good treatment option that reduces the risk, and surgeries often cost more complex and can be performed safely and predictably. In this paper, three cases of children with temporomandibular ankylosis treated with this method with good results are reported (AU)
Descritores: Anquilose
Materiais Biocompatíveis
Prótese Maxilofacial
Micrognatismo
Transtornos da Articulação Temporomandibular
-Ligas de Cromo
Planejamento de Prótese Dentária
México
Molibdênio
Osteogênese por Distração
Limites: Humanos
Masculino
Feminino
Pré-Escolar
Criança
Tipo de Publ: Relatos de Casos
Responsável: AR29.1 - Biblioteca


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Id: biblio-883691
Autor: Matos, Adaias Oliveira; Branco, Cristiane de Castro C. Castelo; Klautau, Eliza Burlamaqui; Alves, Bruno Pereira.
Título: Comparative analysis of ceramic flexural strength in co-cr and ni-cr alloys joined by TIG welding and conventional brazing
Fonte: Braz. j. oral sci;16:e17049, jan.-dez. 2017. ilus.
Idioma: en.
Resumo: Aims: The purpose of the present study was to evaluate the flexural strength of specimens made of nickel-chromium(Ni-Cr) and cobalt-chromium (Co-Cr) alloys and joined by tungsten inert gas (TIG) welding and conventional brazing. Ni­Cr and Co­Cr base metal specimens (n = 40, each) were cast and welded by TIG or brazing. The specimens were divided into six groups (2 base metals, four welded specimens). Ceramic systems were applied to the central part of all the specimens. A three-point bending test with a velocity of 0.5 mm/m was performed on the specimens up to the point of the first ceramic bond failure by measuring the flexural strength. Data were analyzed using two-way ANOVA and Bonferroni's tests. Conventional welding showed the lowest flexural strength results for both alloys, while the TIG weld and the control group presented with varying bond strengths for the alloys studied. We concluded that TIG welding was superior to the conventional welding method for both Ni­Cr and Co­Cr alloys with regard to the flexural strength of the ceramic (AU)
Descritores: Cerâmica
Ligas Dentárias
Soldagem em Odontologia
-Ligas de Cromo
Responsável: BR218.1 - Biblioteca Carlos Henrique Robertson Liberalli



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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde