scholarly journals Can the Cure Time of Endodontic Sealers Affect Bond Strength to Root Dentin?

2013 ◽  
Vol 24 (4) ◽  
pp. 340-343 ◽  
Author(s):  
Gabriela Campos Mesquita ◽  
Crisnicaw Verissimo ◽  
Luis Henrique Araujo Raposo ◽  
Paulo Cesar Freitas Santos-Filho ◽  
Aderito Soares da Mota ◽  
...  
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
Fiber Post ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Relyx Unicem ◽  
Cure Time ◽  
Glass Fiber Post ◽  
Root Dentin ◽  
Endodontic Sealers

The cure time of endodontic sealers may influence the bond strength of fiber posts to root dentin. Forty teeth were selected and endodontically filled using calcium hydroxide cement and then divided into 2 groups according to the time elapsed between endodontic filling and post luting (n = 20): Immediately - glass fiber post luting immediately after endodontic filling; and Delayed - post luting performed 7 days after endodontic filling. The roots were also subdivided according to resin cement used for post luting (RelyX ARC and RelyX Unicem). The specimens were stored at 37°C for 24 h and sectioned in six 1-mm-thick slices from cervical, middle and apical thirds. The slice specimens were submitted to a push-out test at a crosshead speed of 0.5 mm/min, and the bond strength values obtained (MPa) were submitted to two-way ANOVA in a split-plot arrangement and Tukey's test (α=0.05). For both RelyX ARC and Unicem, the bond strength was significantly higher when the posts were cemented 7 days after the endodontic treatment. RelyX Unicem showed significantly higher bond strength values than RelyX ARC for both cementation periods. It was concluded that post luting should be made after the complete setting of the root canal sealer. Self-adhesive resin cement should be preferred for fiber post luting.

Influence of endodontic sealers with different chemical compositions on bond strength of the resin cement/glass fiber post junction to root dentin

2020 ◽  
Vol 24 (10) ◽  
pp. 3417-3423 ◽  
Author(s):  
Isadora Mello Vilarinho Soares ◽  
Bruno Monguilhott Crozeta ◽  
Rodrigo Dantas Pereira ◽  
Ricardo Gariba Silva ◽  
Antonio Miranda da Cruz-Filho
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Resin Cement ◽  
Chemical Compositions ◽  
Fiber Post ◽  
Glass Fiber Post ◽  
Root Dentin ◽  
Endodontic Sealers

scholarly journals Influence of Relining Post on the Bond Strength of Resin Cements

2015 ◽  
Vol 16 (7) ◽  
pp. 559-564 ◽  
Author(s):  
Matheus Coelho Bandéca ◽  
Adriano Augusto Melo de Mendonça ◽  
Etevaldo Matos Maia Filho ◽  
Fausto da Silva Bramante ◽  
Darlon Martins Lima ◽  
...  
Keyword(s):  
Bond Strength ◽  
Resin Cement ◽  
The Self ◽  
Fiber Post ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Significant Difference ◽  
Adhesive Cement ◽  
Push Out

ABSTRACT This study evaluated the influence of relining fiber posts on the bond strength (BS) of resin cements in the root canal. Forty bovine teeth were divided in four groups (n = 10)G1 (ARC)—fiber post cemented with resin cement RelyX ARC; G2 (ARC+Z350)—relined fiber post cemented with RelyX ARC; G3 (U200)—fiber post cemented with self-adhesive cement RelyX U200; G4 (U200+Z350)—relined fiber post cemented with RelyX U200. The roots were sectioned in six 1.2-mm slices and the push-out test was performed. Data were analyzed by three-way analysis of variance (ANOVA), and Tukey's test (α = 0.05). For the conventional resin cement, there was no significant difference between groups G1-ARC (15.5 ± 3.8) and G2-ARC+Z350 (16.1 ± 4.5). For the self-adhesive cement, the results revealed higher BS values for relined posts G4-U200 + Z350 (19.9 ± 7.9) as compared to non-relined posts G3-U200 (14.4 ± 4.5). For both cements, in groups of relined posts, the apical and the cervical thirds presented similar BS. Relining enhances the performance of the self-adhesive resin cement, and the interaction between relining and root third influences the BS to the conventional resin cement. How to cite this article Conde DM, Rodrigues VP, de Fátima Carvalho Souza S, Bauer JRO, da Silva Bramante F, Lima SNL, Filho EMM, Bandeca MC, de Mendonça AAM, Lima DM. Influence of Relining Post on the Bond Strength of Resin Cements. J Contemp Dent Pract 2015;16(7):559-564.

scholarly journals Effect of Surface Treatment of Fiberglass Posts on Bond Strength to Root Dentin

2014 ◽  
Vol 25 (4) ◽  
pp. 314-320 ◽  
Author(s):  
Andréa Dolores Correia Miranda Valdivia ◽  
Veridiana Resende Novais ◽  
Murilo de Sousa Menezes ◽  
Marina Guimarães Roscoe ◽  
Carlos Estrela ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Bond Strength ◽  
Surface Treatment ◽  
Repeated Measures ◽  
Resin Cement ◽  
Adhesive Resin ◽  
Relyx Unicem ◽  
Treatment Type ◽  
Root Dentin ◽  
Push Out

This study evaluated the influence of the surface treatments of fiberglass posts on bond strength to root dentin using push-out test. Forty bovine incisor roots were endodontically treated. The surface of the fiberglass posts (Exacto #2, Angelus) were treated using 4 different protocols (n=10): Control - 70% ethanol for 1 min; 37% phosphoric acid for 1 min; 10% hydrofluoric acid for 1 min; and 24% hydrogen peroxide for 1 min. After a silane coupling agent was applied for 1 min and all posts were cemented using self-adhesive resin cement (RelyX Unicem, 3M-ESPE). The roots were sectioned and two 1-mm-thick slices were obtained from each third: cervical, middle and apical. The specimens were subjected to the push-out test with a crosshead speed of 0.5 mm/min. Data were analyzed by repeated measures ANOVA followed by Tukey's HSD tests (=0.05). The surface treatment (p<0.001) and root third region (p=0.007) factors were significant. The retention to root canal was affected by surface treatment type. The post surface treatment with 24% hydrogen peroxide for 1 min yielded significantly higher bond strength when the fiberglass posts were cemented with RelyX Unicem.

Influence of Post-cure Time on the Microhardness of Self-Adhesive Resin Cements Inside the Root Canal

2012 ◽  
Vol 37 (5) ◽  
pp. 548-556 ◽  
Author(s):  
E Baena ◽  
MV Fuentes ◽  
MA Garrido ◽  
J Rodríguez ◽  
L Ceballos
Keyword(s):  
Root Canal ◽  
Acrylic Resin ◽  
Resin Cement ◽  
The Self ◽  
Polymerization Reaction ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Relyx Unicem ◽  
Cure Time

SUMMARY Purpose To compare the microhardness of several dual-cure, self-adhesive resin cements used to lute fiber posts at 24 hours and seven days after cementation. Methods Bovine incisors were selected to lute 15 fiber posts that were 12 mm long (FRC Postec Plus size 3, Ivoclar-Vivadent). Five resin cements were tested: Multilink Automix (Ivoclar-Vivadent), without light-curing, and the self-adhesive resin cements Maxcem Elite (Kerr), RelyX Unicem (3M ESPE), G-Cem (GC), and Smartcem 2 (Dentsply), which were light-cured for 40 seconds (LED Bluephase, Ivoclar-Vivadent). Each root was embedded in chemically cured acrylic resin and stored at 37°C for 24 hours. The roots were transversally sectioned into nine specimens that were each 1 mm thick, with three specimens corresponding to each root third. Indentations (100g, 30 seconds) were performed on each section in the resin cement, at 24 hours and seven days after cementation, using a Vickers digital microdurometer (Buehler). Data were analyzed by two-way analysis of variance, Student-Newman-Keuls test, and paired t-test (p&lt;0.05). Results A significant influence was found (p&lt;0.05) for the resin cement evaluated, the root third, and their interactions on microhardness values at 24 hours and seven days after post cementation. RelyX Unicem and G-Cem exhibited the highest microhardness values, whereas Multilink Automix presented the lowest. All resin cements suffered a decrease in microhardness according to root canal depth, with the exception of G-Cem and Multilink Automix at 24 hours and Smartcem 2 after seven days. After seven days, the evaluated resin cements showed a significant increase in microhardness values, with the exception of Maxcem Elite and Smartcem 2 at the coronal third. Conclusions Microhardness of the self-adhesive resin cements when used to lute fiber posts was material-dependent and higher values were obtained in the coronal third, revealing their sensitivity to light irradiation. More information regarding the polymerization reaction of these cements is warranted. According to the current results, microhardness values were significantly higher one week after post luting.

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

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
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.

scholarly journals Longevity of Bonding of Self-adhesive Resin Cement to Dentin

2016 ◽  
Vol 41 (3) ◽  
pp. E64-E72 ◽  
Author(s):  
TC Simões ◽  
ÍV Luque-Martinez ◽  
RR Moraes ◽  
ATG Sá ◽  
AD Loguercio ◽  
...  
Keyword(s):  
Bond Strength ◽  
Water Storage ◽  
Resin Cement ◽  
Fiber Post ◽  
Adhesive Resin ◽  
Root Dentin ◽  
Adhesive Resin Cement ◽  
Post Hoc ◽  
Push Out ◽  
Over Time

SUMMARY Objective: To evaluate the effect of root dentin treatment on the bonding of self-adhesive resin cement after 24 hours and after 6 months. Methods: A total of 48 single-rooted premolars were endodontically treated and divided into four groups (n=12): Adper Scotchbond Multi-Purpose + RelyX ARC (ARC); RelyX U200 (U200); EDTA + RelyX U200 (EU200); and phosphoric acid (H3PO4) + RelyX U200 (HU200). After filling the roots, an Exacto No. 2 fiber post was cleaned, treated with silane (60 seconds), positioned, and light cured (LED; 60 seconds at 1200 mW/cm2). After storage (37°C/24 h), the roots were cut to obtain two discs (1 mm) of each third. They were stored in distilled water (24 hours at 37°C); one disc of each root-third was subjected to the push-out test (0.5 mm/min) at 24 hours and the other disc after six months of water storage (37°C). The data on the root-thirds were averaged for statistical purposes. The average values of bond strength (MPa) were analyzed by two-way analysis of variance and post hoc Student-Newman-Keuls (5%). Results: There were statistical differences for the treatment of dentin (p&lt;0.001), for time (p=0.003), and the interaction of treatment and time (p=0.017). After 24 hours, we observed lower bond strength in the HU200 group when compared with other groups (ARC, U200, and EU200). After six months, HU200 showed the lowest bond strength. Higher strengths were observed for EU200 and U200 similarly, which were higher than ARC. Conclusion: The bonding of the self-adhesive resin cement varied over time in the tested groups.

scholarly journals Effect of Intracanal Irrigants on Bond Strength of Fiber Posts Cemented With a Self-adhesive Resin Cement

2016 ◽  
Vol 41 (6) ◽  
pp. e159-e167 ◽  
Author(s):  
MS Barreto ◽  
RA Rosa ◽  
VG Seballos ◽  
E Machado ◽  
LF Valandro ◽  
...  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Resin Cement ◽  
Laser Scanning Microscopy ◽  
Fiber Post ◽  
Ultrasonic Activation ◽  
Adhesive Resin ◽  
Universal System ◽  
Fiber Posts ◽  
Adhesive Resin Cement

SUMMARY Objective: The aim of this study was to evaluate the effect of five intracanal irrigants on bond strength of fiber posts cemented with newer self-adhesive resin cement. Methods: A total of 60 extracted, single-rooted human premolars, sectioned at 14 mm, were prepared with the ProTaper Universal system with a size F3 instrument and filled with an F3 master cone and AH Plus. The root canal filling was partially removed, leaving 4 mm of apical gutta-percha. Specimens were randomly assigned to five groups (n=12), according to the solution used for dentin surface treatment before fiber post cementation, as follows: EDTA 17% (EDTA); QMix (QM); SmearClear (SC); 2.5% sodium hypochlorite (NaOCl), and 0.9% saline solution (SS). Ultrasonic activation was performed (three times, 20 seconds each), and root canals were dried with paper points. Fiber posts were cemented with RelyX U200. In one specimen per group, rhodamine B dye was mixed with RelyX U200 to provide adequate fluorescence for confocal laser scanning microscopy (CLSM) assessment. Specimens were transversally sectioned and three slices were obtained, one for each root third. Next, a push-out test was performed. A stereomicroscope and CLSM were used to analyze the failure modes and to illustrate the pattern of infiltration of RelyX U200 into dentinal tubules, respectively. Bond strength means were calculated, and analysis of variance and Bonferroni tests were used for statistical analysis. Results: SS showed the highest mean bond strength values (11.5±5.3), superior to QM (5.1±3.1) and SC (5.1±3.3). NaOCl presented intermediary bond strength values (9.7±5.0), similar to EDTA (7.7±2.9) and SS. QM and SC showed the lowest mean bond strength (p&lt;0.05). Adhesive failures between cement/dentin were predominant (53.9%). Conclusion: SS and NaOCl associated with ultrasonic activation seem to be adequate solutions for root canal cleaning before fiber post cementation with self-adhesive resin cement, whereas chelating solutions, such as EDTA, QM, and SC, cause a decrease in bond strength.

The Influence of Time and Cement Type on Push-Out Bond Strength of Fiber Posts to Root Dentin

2011 ◽  
Vol 36 (6) ◽  
pp. 643-648 ◽  
Author(s):  
AA Leme ◽  
M Coutinho ◽  
AF Insaurralde ◽  
PMC Scaffa ◽  
LM da Silva
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Resin Cement ◽  
Cement Type ◽  
Adhesive Resin ◽  
Fiber Posts ◽  
Etch And Rinse ◽  
Root Dentin ◽  
Adhesive Resin Cement ◽  
Push Out

Clinical Relevance A self-adhesive resin cement can provide a significantly stronger bond than a three-step etch-and-rinse adhesive and resin cement when used to lute fiber posts.

Bond strength between root dentin and three glass-fiber post systems

2006 ◽  
Vol 96 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Mustafa Kalkan ◽  
Aslihan Usumez ◽  
A. Nilgun Ozturk ◽  
Sema Belli ◽  
Gurcan Eskitascioglu
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Fiber Post ◽  
Glass Fiber Post ◽  
Root Dentin

scholarly journals Influence of Zingiber officinale Extract on Push-Out Bond Strength of Glass-Fiber Post

2018 ◽  
Vol 29 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Tânia Mara da Silva ◽  
Virgílio Vilas Boas Fernandes Junior ◽  
Rosemary Soares de Santana ◽  
Renata Marques de Melo Marinho ◽  
Márcia Carneiro Valera ◽  
...  
Keyword(s):  
Bond Strength ◽  
Glass Fiber ◽  
Zingiber Officinale ◽  
Resin Cement ◽  
Fiber Post ◽  
Ginger Extract ◽  
Etch And Rinse ◽  
Glass Fiber Post ◽  
Push Out

Abstract The aim of this study was to evaluate in vitro the influence of 20% glycolic ginger extract on the bond strength of glass-fiber post cemented with etch-and-rinse or self-etching resin cement. Forty-eight bovine roots were standardized (17±0.5 mm) and randomly divided into two groups, according to irrigant used during biomechanical preparation: NaOCl: 1% sodium hypochlorite and GEN: 20% glycolic ginger extract. Root canal was prepared and randomly assigned to one of two subgroups (n=12), according to luting protocol: self-etching (RelyX U200) and etch-and-rinse (RelyX ARC). After 48 h, the roots were sectioned perpendicularly (4 in cervical third and 3 in middle third) and submitted to push-out bond strength test (50 kgf load cell, 1.0 mm/min). Failure mode was analyzed in SEM and stereomicroscopy. Data were analyzed by three-way ANOVA and Tukey tests (p<0.05). ANOVA revealed that there were no significant differences between U200 (2.01±0.17)B and ARC (1.93±0.12)B in GEN group, and at the cervical third for both irrigants, 2.69±0.16A and 2.54±0.17A, respectively. Middle third showed lower bond strength than cervical third, regardless the irrigant. Overall, the cervical third regardless the irrigant employed and the association between NaOCl and ARC, presented better adhesive performance.

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