Bond strength between fiber posts and composite resin core: influence of temperature on silane coupling agents

Novais, Veridiana Resende; Júnior, Paulo Cézar Simamotos; Puppin-Rontani, Regina Maria; Correr-Sobrinho, Lourenço; Soares, Carlos José

doi:10.1590/s0103-64402012000100002

Cited by 23 publications

(26 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Both studies were performed using pre-hydrolyzed silanes. Other studies (3,21,22) found that different types of silane led to different bonding strengths after heat treatment.…”

Section: Discussionmentioning

confidence: 97%

Silanated Surface Treatment: Effects on the Bond Strength to Lithium Disilicate Glass-Ceramic

et al. 2015

View full text Add to dashboard Cite

The aim of this study was to evaluate the effect of silanization protocols on the bond strength of two resin cements to a lithium disilicate glass-ceramic. Thirty-two ceramic discs were assigned to 2 groups (n=16): G1 -dual-cured resin cement and G2 -lightcured resin cement. Four subgroups were evaluated according to the used silanization protocol. The glass-ceramic was etched with 10% hydrofluoric acid for 20 s and silane was applied for 1 min, as follows: CTL -according to the manufacturer's instructions; HA -dried with hot air; NWA -washed and dried with water and air at room temperature; HWA -washed and dried with hot water and hot air. Thereafter, adhesive was applied and light-cured for 20 s. Silicon molds were used to prepare resin cement cylinders (1x1 mm) on the ceramic surface. The specimens were stored in deionized water at 37 °C for 48 h and subjected to a micro-shear test. The data were submitted to statistical analysis (α=0.05). Group G1 showed higher bond strengths than G2, except for the CTL and NWA subgroups. Differences as function of the silanization protocol were only observed in G1: HWA (25.13±6.83)≥HA (22.95±7.78)≥CTL(17.44±7.24) ≥NWA(14.63±8.76). For G2 there was no difference among the subgroups. In conclusion, the silanization protocol affected the resin cement/ceramic bond strengths, depending on the material. Washing/drying with hot water and/or hot air increased only the bond strength of the dual-cured resin cement.S i l a n a t e d S u r f a c e T r e a t m e n t : Effects on the Bond Strength to Lithium Disilicate Glass-Ceramic

show abstract

“…Both studies were performed using pre-hydrolyzed silanes. Other studies (3,21,22) found that different types of silane led to different bonding strengths after heat treatment.…”

Section: Discussionmentioning

confidence: 97%

Silanated Surface Treatment: Effects on the Bond Strength to Lithium Disilicate Glass-Ceramic

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Among the various treatments proposed to improve adhesion to the fiber-post surface, silanization has been assessed in several laboratory studies. 13,14 However, silane coupling agents, commonly used in dentistry, react with glass fibers and may not bond well to the organic component. 15 Therefore, treating the post in order to roughen the surface and expose the glass fibers has been suggested; it allows for micromechanical interlocking of the adhesive/cement with the post.…”

Section: Introductionmentioning

confidence: 99%

Etching a Fiber Post Surface with High-concentration Bleaching Agents

Menezes

Faria-e-Silva

et al. 2014

Operative Dentistry

View full text Add to dashboard Cite

Summary Introduction Commonly, resin composites/cements fail to achieve proper bonding to fiber posts when their surfaces have not been previously etched. This study evaluated the effect of the concentration and application mode of hydrogen peroxide on the surface topography and bond strength of resin composite to glass-fiber posts. Methods and Materials Fiber posts were immersed in 24% or 35% solutions (a high-concentration bleaching agent) of hydrogen peroxide (H2O2), or these solutions were applied over the post surface using a microbrush (n=10). Posts without any treatment were used as a control. After etching, the posts were silanated and an adhesive was applied. The posts were positioned in a mold, and a resin composite was incrementally inserted and light-cured. The post/resin assembly was serially sectioned into several beams that were subjected to a tensile bond strength test. The data were subjected to the two-way analysis of variance and Tukey test (α=0.05). The Dunnet's test was used to compare the experimental conditions to the control. The surface topography was analyzed using scanning electronic microscopy. Results The non-etched post presented a relatively smooth surface without fiber exposure. Except for the application of 24% H2O2, the other experimental conditions increased the number of exposed fibers and bond strength in relation to the control. Although immersion resulted in higher values for the 24% H2O2 application, the mode of application did not alter bond strength when 35% H2O2 was used. Conclusions The effect of the mode of application of H2O2 depended on its level of concentration. A high-concentration bleaching agent improved the bond strength of the resin composite to the post surface, regardless of which mode was used.

show abstract

“…Diversos estudos observaram que, o condicionamento com ácido fluorídrico dissolve os componentes vítreos e cristalinos, alterando de forma significativa a morfologia superficial dos pinos de fibra de vidro, promovendo irregularidades representadas por microporos retentivos, fendas e sulcos 7,10,11 . Dessa forma, tem a capacidade de aumentar a molhabilidade do composto resinoso aplicado a superfície do pino.…”

Section: Discussionunclassified

“…Dessa forma, tem a capacidade de aumentar a molhabilidade do composto resinoso aplicado a superfície do pino. 7,10,12,13 O ácido fluorídrico é comumente utilizado para o tratamento de superfície de cerâmicas, pois este procedimento, seguido da aplicação de silano, produz união clinicamente aceitável da resina composta para cerâmica à base de Sílica 7,11,13,14 . Por outro lado, foi constatado que o ácido fosfórico, quando empregado como método de tratamento de superfície, proporciona pouca alteração superficial na estrutura dos pinos de fibra de vidro, atuando de maneira mais eficiente na limpeza superficial do mesmo…”

Section: Discussionunclassified

“…Os resultados conflitantes podem estar associados aos diferentes tempos de aplicação, ao tamanho das partículas de óxido de alumínio e à pressão e à distância do aplicador à superfície do pino. O fato é que, a superioridade na rugosidade superficial dos pinos tratados fisicamente através do jateamento confere uma maior união entre os substratos resinosos e o pino 8,10,21 . Dessa forma, a utilização clínica de pinos tratados através do jateamento seguido de aplicação de silano deverá proporcionar uma maior longevidade do tratamento 6,13 .…”

unclassified

See 1 more Smart Citation

Tratamento De Superfície E Resistência De União Entre Pinos De Fibra De Vidro E Resina Composta

Pimentel¹,

Granja²,

Tschelakow³

et al. 2017

RevBahianaOdonto

View full text Add to dashboard Cite

| Objective: The objective of this workwas to evaluate the influence of different methods of surface treatment on glass fiber posts with respect to their bond strength with the composite resin. Method: Twenty-four pre-fabricated posts were randomly divided into three groups (n= 8) according to the chosen surface treatment. Control Group-surface treatment with 37% phosphoric acid etching and silanization. Group 2 -conditioned with 10% fluoridric acid and silanization. Group 3 -sandblasting for 10 seconds and silanization. The specimens were obtained using the stainless steel matrix made for this study and were maintained in absolute humidity at 37 ° C for 48 hours and then subjected to the PUSH-OUT test on the test machine. Results: The results showed that the aluminium oxide blasting treatment of aluminum and silane (12.24 MPa) (G3) had statistically significant difference when compared to the treatment of hydrofluoric acid and silane (G2) (8.03 MPa) (p <0, 05). The predominant fracture type was cohesive of the composite resin (68.75%) and only a mixed fracture (2.08%) was observed. Conclusions: Thus, it is concluded that the blasting treatment of aluminum oxide and silane can be used as a surface treatment on the glass fiber post.

show abstract

Bond strength between fiber posts and composite resin core: influence of temperature on silane coupling agents

Cited by 23 publications

References 17 publications

Silanated Surface Treatment: Effects on the Bond Strength to Lithium Disilicate Glass-Ceramic

Silanated Surface Treatment: Effects on the Bond Strength to Lithium Disilicate Glass-Ceramic

Etching a Fiber Post Surface with High-concentration Bleaching Agents

Tratamento De Superfície E Resistência De União Entre Pinos De Fibra De Vidro E Resina Composta

Contact Info

Product

Resources

About