Immediate and delayed photoactivation of self-adhesive resin cements and retention of glass-fiber posts

The aim of this study was to evaluate the influence of a sonic application of self-adhesive resin cements on the bond strength of glass fiber posts to root dentin. Eighty bovine incisors were randomly divided into eight groups (n = 10). Four self-adhesive resin cements were used—RelyX U200 (3M/ESPE), Bifix SE (Voco), seT PP (SDI), and Panavia SA (Kuraray). The cements were inserted into the root canal in two different modes—Centrix syringe (control) or with a sonic device (Sonic Smart). The roots were sectioned and taken to a universal test machine (Instron 3342) to perform the push-out test. The fracture pattern was evaluated by stereomicroscope and scanning electron microscope. The bond strength data were analyzed by two-way ANOVA and Tukey tests (α = 0.05). The interaction between the main factors was significant (p = 0.002). The sonic application increased the bond strength in comparison with the conventional application for the RelyX U200 (p < 0.001) and Bifix SE (p < 0.017) cements. However, for the seT PP and Panavia SA cements, the bond strength values did not differ significantly (p > 0.05). The fracture pattern showed adhesive at the interface between the luting cement and the dentin. Using a sonic device in the application of self-adhesive resin cement helpedpromote an increase in the bond strength for RelyX U200 and Bifix SE.

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Self-Adhesive Resin Cement for Luting Glass Fiber Posts

Journal of Esthetic and Restorative Dentistry ◽

10.1111/jerd.12130 ◽

2014 ◽

Vol 26 (6) ◽

pp. 417-421 ◽

Cited By ~ 1

Author(s):

Noéli Boscato ◽

Tatiana Pereira-Cenci ◽

Rafael R. Moraes

Keyword(s):

Glass Fiber ◽

Resin Cement ◽

Adhesive Resin ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Adhesive Resin Cement

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Relining effects on the push-out shear bond strength of glass fiber posts

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.14815 ◽

2016 ◽

Vol 45 (4) ◽

pp. 227-233

Author(s):

Adriana Rosado Valente ANDRIOLI ◽

Margareth COUTINHO ◽

Andréa Araújo de VASCONCELLOS ◽

Milton Edson MIRANDA

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Shear Bond Strength ◽

Resin Cement ◽

Cervical Region ◽

Adhesive Resin ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Adhesive Resin Cement ◽

Push Out

Abstract Introduction The correct use of glass fiber posts in endodontically treated teeth is essential for the clinical success of restorative treatment. Objective This study evaluated the push-out shear bond strength of relined (R) or non-relined (NR) glass fiber posts, cemented with self-adhesive resin cement [RelyXTM U100 (U100)] and conventional resin cement [RelyXTM ARC (ARC)]. Material and method Sixty human single-rooted teeth were endodontically treated and divided into ARC-NR; U100-NR; ARC-R; U100-R groups. The teeth were sectioned into cervical, middle and apical thirds, and subjected to the push-out test. Bond strength was analyzed by the Friedman test; cement and post types were compared by the Mann Whitney test. The pattern of failures was evaluated with digital camera through images at 200x magnification, and was classified as adhesive (at the cement/dentin or cement/post interface), cohesive (cement or post), and mixed failures. Result In ARC-NR, bond strength values were higher in the cervical third; in U100-NR and ARC-R they were similar between the thirds. In U100-R, in the cervical and middle thirds the bond strength values were similar, and there was lower value in the apical third. For non-relined glass fiber posts, the highest mean bond strength values were observed with self-adhesive resin cement. Whereas, relined posts cemented with conventional resin cement had stronger cement layer in comparison with non-relined fiber posts. Conclusion The post relining technique was efficient in ARC-R. ARC-NR and U100-R showed improved bond strength in the cervical region of canal walls. The main failures were adhesive at the cement-post interface.

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The Role of Resin Cement on Bond Strength of Glass-fiber Posts Luted Into Root Canals: A Systematic Review and Meta-analysis of In Vitro Studies

Operative Dentistry ◽

10.2341/13-070-lit ◽

2014 ◽

Vol 39 (1) ◽

pp. E31-E44 ◽

Cited By ~ 111

Author(s):

R Sarkis-Onofre ◽

JA Skupien ◽

MS Cenci ◽

RR Moraes ◽

T Pereira-Cenci

Keyword(s):

Systematic Review ◽

Bond Strength ◽

Meta Analysis ◽

Resin Cement ◽

Resin Cements ◽

Adhesive Resin ◽

Root Canals ◽

Fiber Posts ◽

Glass Fiber Posts

SUMMARY Because there are several ways to cement glass-fiber posts (GFPs) into root canals, there is no consensus on the best strategy to achieve high bond strengths. A systematic review was conducted to determine if there is difference in bond strength to dentin between regular and self-adhesive resin cements and to verify the influence of several variables on the retention of GFPs. This report followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. In vitro studies that investigated the bond strength of GFPs luted with self-adhesive and regular resin cements were selected. Searches were carried out in the PubMed and Scopus databases. No publication year or language limit was used, and the last search was done in October 2012. A global comparison was performed between self-adhesive and regular resin cements. Two subgroup analyses were performed: 1) Self-adhesive × Regular resin cement + Etch-and-rinse adhesive and 2) Self-adhesive × Regular resin cement + Self-etch adhesive. The analyses were carried out using fixed-effect and random-effects models. The results showed heterogeneity in all comparisons, and higher bond strength to dentin was identified for self-adhesive cements. Although the articles included in this meta-analysis showed high heterogeneity and high risk of bias, the in vitro literature seems to suggest that use of self-adhesive resin cement could improve the retention of GFPs into root canals.

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Glass fiber post treatment – does it influence resin cement bond strength?

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.03219 ◽

2019 ◽

Vol 48 ◽

Author(s):

Marciano de Freitas BORGES ◽

Gabriela Simões TEIXEIRA ◽

Anelise Fernandes MONTAGNER ◽

Alexandre Henrique SUSIN

Keyword(s):

Hydrogen Peroxide ◽

Bond Strength ◽

Sodium Bicarbonate ◽

Glass Fiber ◽

Surface Treatments ◽

Resin Cement ◽

Adhesive Resin ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Adhesive Resin Cement

Abstract Introduction Glass-fiber posts are used in order to improve the retention of restorations in endodontically treated teeth. Objective To evaluate the bond strength of glass-fiber posts submitted to different surface treatments and cemented to the root canal dentin with self-adhesive resin cement. Material and method Thirty roots of human canines were prepared and divided according to two factors: surface treatments (silane, 35% hydrogen peroxide, or sodium bicarbonate) and root thirds (cervical and middle thirds). The glass-fiber posts were cemented with self-adhesive resin cement (RelyX U200). After 24 h, the specimens were prepared for microtensile bond strength test (hourglass format), fracture pattern and micromorphological assessment by scanning electronic microscopy, in order to measure the cement line. Result The data (MPa and µm) were submitted to two-way ANOVA and Tukey’s test (α = 5%). The surface treatments influenced the bond strength of the posts cemented with self-adhesive resin cement (p<0.00). The mean bond strength (standard deviations) differed according to the region of root dentin (p<0.00): the cervical region (Control: 19.16MPa (3.71); Silane: 25.65MPa (4.04); Hydrogen peroxide: 24.43MPa (3.16); Sodium bicarbonate: 37.42MPa (8.27)) showed higher bond strength values than the middle third of the root (Control: 14.66MPa (4.65); Silane: 12.52MPa (5.03); Hydrogen peroxide: 10.64MPa (3.33); Sodium bicarbonate: 10.87MPa (2.49)). Conclusion Treatment of the glass-fiber post surface with chemical and physical agents increased the bond strength of the cement-post-dentin interface in the cervical third and the treatment with Sodium bicarbonate showed better results in bond strength.

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Push-out bond strength of glass fiber posts luted with two resin cements

Brazilian Dental Science ◽

10.14295/bds.2017.v20i4.1452 ◽

2017 ◽

Vol 20 (4) ◽

pp. 78

Author(s):

Blanca Liliana Torres Léon ◽

Vitor Lopes Franco ◽

Emily Vivianne Freitas Silva ◽

Leonardo Muniz ◽

Fernando Carneiro Ribeiro

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Fiber Post ◽

Resin Cements ◽

Anterior Teeth ◽

Fiber Posts ◽

Post And Core Technique ◽

Glass Fiber Posts ◽

Glass Fiber Post ◽

Push Out

Objective. To evaluate the bond strength of a prefabricated glass fiber post to the root dentin with two resin cements using the push-out test. Material and Methods. Thirty fiber posts (White Post ECD) were cemented in human endodontically treated anterior teeth with two resin cements (n=15): RelyxTM ARC and AllCem. The roots were transversely sectioned and divided in cervical, middle and apical thirds after 48 h of cementation. The specimens' retention was tested by push-out method. The results were analyzed by 2-way ANOVA and Tukey’s test (p<0.05). Results. There were no significant differences in the bond strength between the resin cements. The bond strength was higher in cervical third than in middle and apical thirds for both resin cements. It was observed higher percentages of adhesive failures followed by mixed. Conclusions. Both resin cements are indicated in the cementation of glass fiber post.KeywordsDental prosthesis; Post and core technique; Biomechanical phenomena.

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Fracture resistance of metal-ceramic crown copings cemented to two types of intra-radicular posts

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.09218 ◽

2018 ◽

Vol 47 (5) ◽

pp. 305-308

Author(s):

Priscila Alonso HENRIQUES ◽

André Hayato SAGUCHI ◽

Fábio Valverde Rodrigues BASTOS NETO ◽

Igor PROKOPOWITSCH ◽

Angela Toshie ARAKI

Keyword(s):

Glass Fiber ◽

Tensile Load ◽

Resin Cement ◽

Adhesive Resin ◽

Fiber Posts ◽

Metal Ceramic ◽

Glass Fiber Posts ◽

Adhesive Resin Cement ◽

Group 2 ◽

Ceramic Crown

Abstract Introduction Endodontically treated teeth are more susceptible to root fracture than vital teeth. In order to reduce the risk of fracture, the use of intra-radicular posts and crowns is indicated. However, their own fracture resistance remains unclear. Objective To analyze the behavior of metal-ceramic crown copings cemented to two types of intra-radicular posts under tensile stress. Material and method Sixteen metal-ceramic crown copings cemented with zinc phosphate cement to cast metal posts and cores (group 1, n = 8) or with self-adhesive resin cement to glass-fiber posts rebased with composite resin (group 2, n = 8) were subjected to tensile testing after endodontic treatment and standardized preparation. Failure occurred when the crown coping and/or post-core assembly fractured and/or detached. Result In group 1, after the application of a mean tensile load of 46.83 N, 7 crown copings and metal cores separated as a whole, while in 1 specimen the coping detached from the metal core. In group 2, a mean tensile load of 127.68 N resulted in glass-fiber post fracture, and in 1 case the entire crown-post-core assembly was detached. Tensile strength differed significantly between the two groups (p = 0.0085). Conclusion Our findings suggest that metal-ceramic crown copings cemented with self-adhesive resin cement show strong adhesion to composite resin cores associated with glass-fiber posts, thus providing a safe alternative to the use of cast metal posts and cores.

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Effect of Anatomical Customization of the Fiber Post on the Bond Strength of a Self-Adhesive Resin Cement

International Journal of Dentistry ◽

10.1155/2017/5010712 ◽

2017 ◽

Vol 2017 ◽

pp. 1-6 ◽

Cited By ~ 4

Author(s):

Adricyla Teixeira Rocha ◽

Leticia Machado Gonçalves ◽

Ana Júlia de Carvalho Vasconcelos ◽

Etevaldo Matos Maia Filho ◽

Ceci Nunes Carvalho ◽

...

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Resin Cement ◽

Control Group ◽

Fiber Post ◽

Adhesive Resin ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Adhesive Resin Cement ◽

Push Out

Aim. The aim of the study was to evaluate, by means of the push-out test, the effect of the anatomical customization of the fiber post on the bond strength of a self-adhesive resin cement. Methods. Twelve endodontically treated, human, upper central incisors were randomly divided into two groups (n=6): control (glass fiber posts cemented with Relyx® U200) and customized (glass fiber posts anatomically customized with translucent composite resin cemented with Relyx U200). The roots were sectioned into three slices, cervical, middle, and apical, and photographed with a digital camera attached to a stereomicroscopic loupe. The images were analyzed by software, for evaluation of the cement line. The slices were subsequently submitted to the push-out test until the post had completely extruded, and the fracture mode was analyzed with a stereomicroscopic loupe. Results. The results showed significant differences between the groups in the different root thirds in relation to the area occupied by air bubbles (p<0.05). Bond strength, when all the thirds are considered, was 8.77 ± 4.89 MPa for the control group and 16.96 ± 4.85 MPa for the customized group. Conclusion. The customized group showed greater bond resistance than the control group and a more uniform cement layer.

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Effect of Different Resin Cements on the Bond Strength of Custom-made Reinforced Glass Fiber Posts—A Push-out Study

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-3058 ◽

2021 ◽

Vol 22 (3) ◽

pp. 219-223

Author(s):

Patrícia MC Soares ◽

Luis FSA Morgan ◽

Stéphanie Q Tonelli ◽

Francisco IR Limeira ◽

Fábio FB Bruzinga ◽

...

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Resin Cements ◽

Fiber Posts ◽

Custom Made ◽

Glass Fiber Posts ◽

Push Out

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Bonding Effectiveness of Two Adhesive Luting Cements to Glass Fiber Posts: Pull-Out Evaluation of Three Different Post Surface Conditioning Methods

International Journal of Dentistry ◽

10.1155/2014/148571 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 5

Author(s):

Lorenzo Graiff ◽

Laura Rasera ◽

Marco Calabrese ◽

Paolo Vigolo

Keyword(s):

Bond Strength ◽

Methyl Methacrylate ◽

Glass Fiber ◽

Resin Cement ◽

Resin Cements ◽

Cement Interface ◽

Pull Out ◽

Fiber Posts ◽

Glass Fiber Posts ◽

Bond Strengths

The purpose of this study was to evaluate the bond strength at the post/resin-cement interface with 3 different surface treatments of glass fiber posts and with 2 different luting resin cements. Sixty glass fiber posts (RelyX Fiber Post) were randomly divided into 3 groups (n=20) and were luted with a dual-polymerizing self-adhesive universal resin cement (RelyX Unicem) and with a dual-polymerizing resin cement (RelyX ARC). This was carried out in association with a dual-polymerizing adhesive (Scotchbond Multi-Purpose Plus) in simulated plexiglass root canals after receiving three different pretreatment procedures. A pull-out test was performed on each sample to measure bond strengths. Data were analyzed with two-way ANOVA. Two samples from each group were processed for SEM observations in order to investigate the morphologic aspect of the post/cement interface. Both resin cements demonstrated significant different bond strength values (P<0.0001). The surface treatment result was also statistically significant (P=0.0465). SEM examination showed a modification of the post surface after pretreatment with methyl methacrylate. The dual-polymerizing self-adhesive universal resin cement achieved higher MPa bond strength values. The use of methyl methacrylate as a surface treatment of glass fiber posts provided a significant increase in bond strengths between the posts and both luting materials.

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