Silane
Mostrando 37-48 de 133 artigos, teses e dissertações.
-
37. Shear bond strength of ceramic brackets after different pre-treatments in porcelain surface
AIM: To evaluate the bond strength of brackets bonded after different surface treatments on two dental ceramics. METHODS: One hundred and twenty discs 5 mm thick and 7 mm diameter of two ceramic types were made and randomly divided in 8 groups. Groups 1, 3, 5, and 7 used Eris ceramic and groups 2, 4, 6, and 8 used d.Sign ceramic. The ceramic surfaces were t
Braz. J. Oral Sci.. Publicado em: 2015-03
-
38. Effect of composite surface treatment and aging on the bond strength between a core build-up composite and a luting agent
Objective The purpose of this study was to assess the influence of conditioning methods and thermocycling on the bond strength between composite core and resin cement. Material and Methods Eighty blocks (8×8×4 mm) were prepared with core build-up composite. The cementation surface was roughened with 120-grit carbide paper and the blocks were thermocycled
J. Appl. Oral Sci.. Publicado em: 2015-02
-
39. Heat Treatment of Pre-hydrolyzed Silane Increases Adhesion of Phosphate Monomer-based Resin Cement to Glass Ceramic
Este estudo avaliou o efeito de diferentes formas de tratamento térmico de um silano pré-hidrolisado na adesão de um cimento resinoso à base de monómeros fosfatados (MDP) à uma cerâmica vítrea. Blocos em resina e cerâmica feldspática (n=48, n=6 para teste de união, n=2 para microscopia) foram divididos
Braz. Dent. J.. Publicado em: 2015-02
-
40. Effect of Silane Type and Air-Drying Temperature on Bonding Fiber Post to Composite Core and Resin Cement
Este estudo avaliou a influência do tipo de silano e a aplicação de temperatura no silano na resistência de união por push-out entre pinos de fibra de vidro com núcleo de preenchimento em resina composta e cimento resinoso. Cento e sessenta pinos de fibra de vidro (Exacto, Angelus, Londrina, PR, Brasil) receberam tratamento de superfície com peróxido
Braz. Dent. J.. Publicado em: 2014-07
-
41. Hybrid films with (trimethoxysilylpropyl) methacrylate (TMSM), poly (methyl methacrylate) PMMA and tetraethoxysilane (TEOS) applied on tinplate
The tetraethoxysilane (TEOS) influences morphological and electrochemical properties of hybrid films by function of concentration. Moreover, the use of acetic acid as a catalyst in the sol enables a more complete hydrolysis of the silane precursors due to the fact that the acetic acid goes through a more complete ionization when in aqueous solution. The aim
Mat. Res.. Publicado em: 27/05/2014
-
42. Micro-shear bond strength and surface micromorphology of a feldspathic ceramic treated with different cleaning methods after hydrofluoric acid etching
Objective: The aim of this study was to evaluate the effect of feldspathic ceramic surface cleaning on micro-shear bond strength and ceramic surface morphology. Material and Methods: Forty discs of feldspathic ceramic were prepared and etched with 10% hydrofluoric acid for 2 minutes. The discs were randomly distributed into five groups (n=8): C: no tre
J. Appl. Oral Sci.. Publicado em: 2014-04
-
43. Effect of silica coating and silane surface treatment on the bond strength of soft denture liner to denture base material
OBJECTIVE: This study investigated the effects of different surface treatments on the tensile bond strength of an autopolymerizing silicone denture liner to a denture base material after thermocycling. MATERIAL AND METHODS: Fifty rectangular heat-polymerized acrylic resin (QC-20) specimens consisting of a set of 2 acrylic blocks were used in the tensile
J. Appl. Oral Sci.. Publicado em: 2013-07
-
44. Heat treatment following surface silanization in rebonded tribochemical silica-coated ceramic brackets: shear bond strength analysis
OBJECTIVE: This study aimed to evaluate the effects of heat treatment on the tribochemical silica coating and silane surface conditioning and the bond strength of rebonded alumina monocrystalline brackets. MATERIAL AND METHODS: Sixty alumina monocrystalline brackets were randomly divided according to adhesive base surface treatments (n=20): Gc, no treatm
J. Appl. Oral Sci.. Publicado em: 2013-07
-
45. In situ polymerized wood polymer composite: effect of additives and nanoclay on the thermal, mechanical properties
This study concerns the preparation and characterization of wood polymer nanocomposites based on impregnation of styrene acrylonitrile co-polymer-nanoclay intercalating system in presence of glycidyl methacrylate (GMA), a cross linking agent, and vinyl trichloro silane (VTCS) as additives into Simul (Bombex ceiba, L.), a soft wood. The effect of nanoclay and
Mat. Res.. Publicado em: 14/05/2013
-
46. DINÂMICA MOLECULAR DA REAÇÃO DE ABSTRAÇÃO DE HIDROGÊNIO NO MH4 (M = C, Si, Ge, Sn) POR ÁTOMOS DE H, F, Cℓ E I INDUZIDA POR PULSO DE LASER DE FEMTOSEGUNDOS. / DYNAMICS OF MOLECULAR HYDROGEN ABSTRACTION REACTION IN MH4 (M = C, SI, GE, SN) IN THE ATOMS H, F, C ℓ EI PULSE INDUCED FEMTOSECOND LASER.
Neste trabalho foram realizadas simulações de dinâmica molecular quântica para as reações de abstração de hidrogênio nas moléculas de metano, silano, germano e estanano por átomos de H, F, Cl, e I sendo realizadas simulações sem e com o uso do pulso de laser de femtosegundos com o objetivo de favorecer a quebra das ligações M-H (M = C, Si, Ge
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2012
-
47. Bond strength between fiber posts and composite resin core: influence of temperature on silane coupling agents
Este estudo avaliou o efeito da temperatura do ar e diferentes silanos na resistência de união entre pino de fibra e resina composta. Os pinos foram limpos com álcool e tratados com diferentes silanos: três pré-hidrolizados [Silano (Angelus), Prosil (FGM), RelyX Ceramic Primer (3M ESPE)] e um de dois componentes [Silane Coupling Agent (Dentsply)]. Duas
Brazilian Dental Journal. Publicado em: 2012
-
48. Effect of bonding material, etching time and silane on the bond strength of metallic orthodontic brackets to ceramic
O objetivo neste estudo foi avaliar a resistência de união de bráquetes a cerâmica feldspática com diferentes tempos de condicionamento ácido, materiais de união, com ou sem aplicação do silano. Cilindros de cerâmica feldspática foram condicionados com ácido fluorídrico 10% por 20 ou 60 s. Para cada tempo de condicionamento, metade dos cilindros
Brazilian Dental Journal. Publicado em: 2012