Regional bond strengths to root canal dentin of fiber posts luted with three cementation systems

This study evaluated the influence of the cementation system on the regional push-out bond strength and failure pattern of fiber posts to radicular dentin. The roots of 48 extracted human incisors were prepared and divided into 3 groups (n=16), according to the cementation system: AdperScotchbond Multi-Purpose + resin cement RelyX ARC (SBMP+ARC); Adper SingleBond 2 + RelyX ARC (SB+ARC) and; RelyX U100 self-adhesive resin cement (U100). The posts were cemented as per manufacturer’s instructions for each cementation system. After 1 week, the roots were sectioned transversely into 6 discs. Two discs were obtained from the cervical, middle and apical thirds and the push-out test was carried out. The failure pattern was examined on all debonded specimens. The data were analyzed by two-way repeated measures ANOVA and Tukey’s test. When U100 was used, no statistically significant difference (p>0.05) was observed among the different root regions. Statistically higher push-out bond strength values were detected in the cervical third for SBMP+ARC and SB+ARC (p<0.05). The U100 showed significantly more mixed failures than SBMP+ARC in the apical third (p<0.05). In conclusion, the self-adhesive cement RelyX U100 was the only cement not sensitive to the root canal region.

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Effect of Calcium Hypochlorite and Sodium Hypochlorite as Root Canal Irrigants on Push-Out Bond Strength of Fiber Post Cemented with Etch-and-Rinse Resin Cement: An In Vitro Study

Frontiers in Dentistry ◽

10.18502/fid.v18i18.6325 ◽

2021 ◽

Author(s):

Mahdiyeh Sheikh Ghahderijani ◽

Maryam Khoroushi ◽

Atiyeh Feiz

Keyword(s):

Bond Strength ◽

Root Canal ◽

Resin Cement ◽

Calcium Hypochlorite ◽

Root Canal Irrigants ◽

Fiber Posts ◽

Etch And Rinse ◽

Significant Difference ◽

Push Out ◽

Group 1

Objectives: Calcium hypochlorite (CH) has been recently used as a root canal irrigant. The aim of the present study was to compare the effect of CH and sodium hypochlorite (SH), as root canal irrigants, on the push-out bond strength of fiber posts cemented with an etch-and-rinse resin cement. Materials and Methods: In this experimental in-vitro study, 40 human anterior teeth with similar root lengths were randomly divided into five groups (N=8) according to the protocol of root canal irrigation as follows: group 1: saline (control); group 2: 2.5% SH; group 3: 5.25% SH; group 4: 2.5% CH; group 5: 5% CH. Before post placement, the post space was irrigated using the same irrigation protocol, and after that, they were irrigated by distilled water. Fiber posts were cemented with All-Bond 3 bonding and Dou-Link Universal cement. After thermocycling (1000 cycles, 5- 55°C), a push-out test was performed, and data were analyzed using one-way analysis of variance and Tukey's post-hoc test with SPSS version 23 (α=0.05). Results: The highest and lowest mean bond strengths were detected in groups 2 and 5, respectively. There was no significant difference between group 1 and the SH groups (P>0.05), but the difference between group 1 and the CH groups was significant (P<0.001). There was a significant difference between SH groups and CH groups (P<0.001). Conclusion: Compared to SH, as a root canal irrigant, CH decreased the push-out bond strength of fiber posts cemented with an etch-and-rinse resin cement.

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Influence of Relining Post on the Bond Strength of Resin Cements

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1722 ◽

2015 ◽

Vol 16 (7) ◽

pp. 559-564 ◽

Cited By ~ 4

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.

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Effect of Root Dentin Pretreatment on Micro-Push-Out Bond Strength of Fiber Posts to Root Canal Dentin: Cold Atmospheric Argon Plasma (CAAP) and Ethylenediaminetetraacetic Acid (EDTA)

International Journal of Dentistry ◽

10.1155/2021/5571480 ◽

2021 ◽

Vol 2021 ◽

pp. 1-6

Author(s):

Farzaneh Sadeghi Mahounak ◽

Mahdi Abbasi ◽

Ladan Ranjbar Omrani ◽

Naghmeh Meraji ◽

Maryam Rezazadeh Sefideh ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Ethylenediaminetetraacetic Acid ◽

Argon Plasma ◽

Fiber Posts ◽

Significant Difference ◽

Mode Of Failure ◽

Atmospheric Argon ◽

Root Canal Dentin ◽

Push Out

Purpose. Debonding from the root canal dentin is the most common failure mode of fiber posts. This study aimed to assess the effects of cold atmospheric argon plasma (CAAP) and ethylenediaminetetraacetic acid (EDTA) on micro-push-out bond strength of fiber posts to root canal dentin. Materials and Methods. Forty maxillary canine teeth were decoronated, underwent endodontic treatment, and were stored in an incubator for 7 days. After post space preparation, the teeth were randomly divided into four groups for different surface treatments: (I) saline, (II) 17% EDTA, (III) CAAP, and (IV) 17% EDTA + CAAP. Fiber posts (Whitepost no. 2, FGM) were cemented into the root canals using Panavia F2.0 resin cement, and 1 mm-thick sections were made at the coronal, middle, and apical thirds of the roots. The samples underwent micro-push-out bond strength test. The mode of failure was also determined under a stereomicroscope. Data were analyzed using three-way ANOVA and Tukey’s post hoc test (α = 0.05). The mode of failure data were analyzed using the chi-square test. Results. The mean micro-push-out bond strength of fiber posts was not significantly different in the four groups ( P > 0.05 ). However, the bond strength values in the coronal third were significantly higher than the corresponding values in the apical third ( P = 0.01 ). There was no significant difference in the modes of failure between the groups ( P > 0.05 ). Conclusion. Application of CAAP alone or in combination with 17% EDTA could not successfully increase the bond strength of fiber posts to root canal dentin.

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Effect of Chlorhexidine and Ethanol Application on Longterm Push-out Bond Strength of Fiber Posts to Dentin

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1720 ◽

2015 ◽

Vol 16 (7) ◽

pp. 547-553 ◽

Cited By ~ 3

Author(s):

Roberta Tarkany Basting ◽

Cecília Pedroso Turssi ◽

Flavia Lucisano Botelho do Amaral ◽

Fabiana Mantovani Gomes França ◽

Rafaela Crystyan Vaneli ◽

...

Keyword(s):

Bond Strength ◽

Repeated Measures ◽

Adhesive System ◽

Resin Cement ◽

Control Group ◽

Test Analysis ◽

Significance Level ◽

Fiber Posts ◽

Etch And Rinse ◽

Push Out

ABSTRACT Aim The aim of this study was to evaluate the effect of chlorhexidine and ethanol application on the push-out bond strength and bond durability of fiber posts cemented with an etch-and-rinse adhesive system/resin cement to intraradicular dentin. Materials and methods Fifty-four bovine roots were shaped for the cementation of a fiberglass post and received the application of 37% phosphoric acid. They were then randomly divided into three groups, according to the type of dentin treatment (n = 18) performed: no treatment (control group), 100% ethanol, or 2% chlorhexidine. Next, the adhesive system (Adper Scotch Bond Multipurpose Plus, 3M ESPE) was applied to the dentin, according to the manufacturer's instructions. Glass fiber posts were cemented with dual resin cement (Rely X ARC, 3M ESPE). After 48 hours, the specimens were serially sectioned for push-out test analysis, providing two slices from each root third (cervical, medium and apical), one of which was tested immediately and the other stored in distilled water for 180 days. The data were analyzed with three-way analysis of variance (ANOVA) for repeated measures and Tukey's test at a 5% significance level. Results Intraradicular treatment with chlorhexidine yielded the highest bond strength means, followed by ethanol treatment. The control group presented the lowest bond strength means. Water storage exerted no effect on bond strength values. Conclusion Both chlorhexidine and ethanol improved push-out bond strength to intraradicular dentin, with the former providing the best results, regardless of the storage time. Clinical significance The application of 2% chlorhexidine or 100% ethanol may be an important step that can be taken to enhance bond strength of fiber posts to intraradicular dentin, when dual resin cements are used. How to cite this article França FMG, Vaneli RC, de Melo Conti C, Basting RT, do Amaral FLB, Turssi CP. Effect of Chlorhexidine and Ethanol Application on Long-term Pushout Bond Strength of Fiber Posts to Dentin. J Contemp Dent Pract 2015;16(7):547-553.

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Comparison of Medicaments Used in Regenerative Endodontics in Terms of Dentin Microhardness and Adhesion of Mineral in Terms of Dentin Microhardness and Adhesion of Mineral Trioxide Aggregate Trioxide Aggregat

Journal of Dentistry Indonesia ◽

10.14693/jdi.v27i3.1127 ◽

2020 ◽

Vol 27 (3) ◽

Author(s):

Esma Saricam ◽

◽

Neslihan Bulak ◽

Esra Özyurt ◽

Suat Özcan ◽

...

Keyword(s):

Bond Strength ◽

Clavulanic Acid ◽

Root Canal ◽

Mineral Trioxide Aggregate ◽

Significance Level ◽

Regenerative Endodontics ◽

Significant Difference ◽

Amoxicillin Clavulanic Acid ◽

Root Canal Dentin ◽

Push Out

Eliminating microorganisms in the root canal system is important for the success of regenerative endodontics. Objective: This study evaluated the effects of different antibiotic pastes used for regenerative endodontic procedures on dentin microhardness and the push-out bond strength of mineral trioxide aggregate (MTA) to root canal dentin. Methods: Sixty-four maxillary central incisors were instrumented and randomly divided into the following four groups (n = 16) for medicament treatment: triple antibiotic paste, amoxicillin+clavulanic acid, cefaclor, and control (no dressing). After 21 days, two root segments were obtained by sectioning the roots horizontally for push-out and microhardness evaluations. MTA was placed into the root canal of the sectioned segment for the push-out test. In the microhardness evaluation, three indentations were made at 500 and 1,000 μm from the canal lumen. The arithmetic mean was then calculated for each distance. ANOVA with post hoc Scheffe test and t test were used for the statistical analyses. The significance level was set at p < 0.05. Results: No significant difference was found between the groups in terms of push-out bond strength (p > 0.05). Cefaclor and amoxicillin+clavulanic acid reduced the microhardness values of the dentin at 500 μm (p < 0.05) while cefaclor had the lowest value at 1,000 μm (p < 0.05). Conclusion: Cefaclor reduced the microhardness value more than the other medicaments did at a depth of 1,000 μm. The pastes provided similar adhesion of MTA.

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Effect of Glass Fiber Post Adaptation on Push-Out Bond Strength to Root Dentin

Brazilian Dental Journal ◽

10.1590/0103-6440201902491 ◽

2019 ◽

Vol 30 (4) ◽

pp. 350-355 ◽

Cited By ~ 1

Author(s):

Thiago Lopes de Freitas ◽

Rafael Pino Vitti ◽

Milton Edson Miranda ◽

William Cunha Brandt

Keyword(s):

Bond Strength ◽

Glass Fiber ◽

Root Canal ◽

Failure Modes ◽

Resin Cement ◽

Adhesive Failure ◽

Fiber Post ◽

Significant Difference ◽

Glass Fiber Post ◽

Push Out

Abstract The aim of this study was to evaluate the effect of different glass fiber posts (GFPs) diameters on the push-out bond strength to dentin. Forty unirradicular human teeth were endodontically treated and used for cementation of GFPs (White Post DC, FGM) with different diameters (n=10): P1 - ø 1.6 mm coronal x 0.85 mm apical; P2 - ø 1.8 mm coronal x 1.05 mm apical; P5 - ø 1.4 mm coronal x 0.65 mm apical; and PC - customized post number 0.5 with composite resin (Tetric Ceram A2, Ivoclair Vivadent). All GFPs were cemented into the root canal using a dual-curing luting composite (Variolink II, Ivoclar Vivadent). One slice (1.7 mm) of each root third of cemented GFP (cervical, middle, and apical) was submitted to push-out testing. Failure modes of all specimens were classified as: adhesive failure between resin cement and post; adhesive failure between dentin and resin cement; cohesive failure within resin cement, post or dentin; and mixed failure. The data were analyzed with two-way ANOVA and Tukey’s test (a=0.05). The highest bond strength values were presented for the P2 and PC groups. There was no statistically significant difference between the GFP thirds in each group. The groups P2, P5, and PC showed predominantly adhesive failure. For P1, the most prevalent type of failure was adhesive between resin cement and post. It may be concluded that a glass fiber post that is well adapted to the root canal presents higher bond strength values, regardless of GFP third.

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Choice of Endodontic Fiber Posts and its Influence on Dental Malpractice: An in vitro Evaluation

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-2064 ◽

2017 ◽

Vol 18 (6) ◽

pp. 452-457

Author(s):

Houssam Jassar ◽

Hassan El Husseini

Keyword(s):

Bond Strength ◽

Low Cost ◽

Fiber Post ◽

Endodontically Treated Teeth ◽

Fiber Posts ◽

Significant Difference ◽

Post Space ◽

Adhesive Cement ◽

Push Out

ABSTRACT Aims and objectives The fiber post type used in restoring endodontically treated teeth may affect the dental expert decision in the case of dental malpractice. The aim of this study was to evaluate the low-cost commercial fiber post in comparison with a higher cost or well-known documented fiber post system. Materials and methods A total of 20 premolars were selected for the study; following endodontic treatment, specimens were randomly divided into two groups of 10 specimens each according to the type of fiber post used: (1) Low-cost commercial fiber post (OYAPost, Taper Lucent, OYARICOM) and (2) higher cost well-known fiber post (Rely X Fiber post, 3M ESPE). Both fiber posts were cemented using self-adhesive cement (Rely X Unicem). Samples were subjected to push-out bond strength and to failure analysis. One-way analysis of variance was used (p < 0.005). Results There was no significant difference between the bond strength of the two tested groups (p > 0.05), while statistically significant difference (p < 0.05) was noted between the different post space regions (cervical, middle, and apical). Conclusion Based on the evidence from the study, it can be concluded that the type of fiber post should not affect the dental expert decision in the case of dental malpractice/lawsuit. Clinical significance All types of low-cost fiber posts may behave similarly to other higher cost or well-documented fiber posts. How to cite this article Ayoub F, Jassar H, El Husseini H, Salameh Z. Choice of Endodontic Fiber Posts and its Influence on Dental Malpractice: An in vitro Evaluation. J Contemp Dent Pract 2017;18(6):452-457.

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Push-out bond strength of quartz fiber posts to root canal dentin using total-etch and self-adhesive resin cements

Medicina Oral Patología Oral y Cirugia Bucal ◽

10.4317/medoral.17429 ◽

2012 ◽

pp. e337-e344 ◽

Cited By ~ 9

Author(s):

MA. Kahnamouei ◽

N. Mohammadi ◽

EJ. Navimipour ◽

M. Shakerifar

Keyword(s):

Bond Strength ◽

Root Canal ◽

Quartz Fiber ◽

Resin Cements ◽

Adhesive Resin ◽

Fiber Posts ◽

Root Canal Dentin ◽

Push Out

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Bond Strength of Fiber-reinforced Posts to Deproteinized Root Canal Dentin

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1583 ◽

2014 ◽

Vol 15 (5) ◽

pp. 581-586 ◽

Cited By ~ 3

Author(s):

Adilson Yoshio Furuse ◽

Leonardo Fernandes Cunha ◽

Samantha Pugsley Baratto ◽

Denise Piotto Leonardi ◽

Gisele Aihara Haragushiku ◽

...

Keyword(s):

Ascorbic Acid ◽

Bond Strength ◽

Root Canal ◽

Sodium Ascorbate ◽

Fiber Reinforced ◽

Fiber Posts ◽

Etch And Rinse ◽

One Step ◽

Root Canal Dentin ◽

Push Out

ABSTRACT Aim This study evaluated the push-out bond strength of cemented fiber posts after deproteinization of root canal dentin walls with NaOCl. The effect of the application of an antioxidant solution (sodium ascorbate) was also evaluated. Materials and methods A three-step etch-and-rinse (Scotchbond - 3M Espe) and a one-step self-etching adhesive (Xeno III - Dentsply Caulk) were evaluated. Thirty bovine incisor roots were divided into 3 groups: a. Irrigation with physiologic solution (control). b. Deproteinization with 10 minutes irrigation of 5% NaOCl. c. Deproteinization with NaOCl followed by 10 minutes irrigation with 10% ascorbic acid. Fiber posts were cemented with a dual-cured cement (Rely X ARC - 3M ESPE). The push-out bond strength was evaluated after 24 hours of storage in distilled water. The data were analyzed with three-way ANOVA, one-way ANOVA and Tukey's test (á = 0.05). Results There were significant differences between groups (p < 0.05). The bond strength of Scotchbond was not influenced by the deproteinization. Xeno III showed a decrease in bond strength when deproteinized with 5% NaOCl (p < 0.05). For Xeno III, the subsequent irrigation with ascorbic acid was able to reverse the effect of the deproteinization. Considering the radicular thirds, the bond strength varied in the sequence—apical < middle < coronal. Conclusion Only the all-in-one adhesive was influenced by the deproteinization. Considering the respective control groups, both systems showed similar bond strength results. Clinical significance The decreased bond strength of the selfetching adhesive following deproteinization seams to be related to the oxidant effect of the NaOCl solution and the subsequent irrigation with ascorbic acid was able to reverse the effect of the deproteinization. How to cite this article Furuse AY, Cunha LF, Baratto SP, Leonardi DP, Haragushiku GA, Gonzaga CC. Bond Strength of Fiber-reinforced Posts to Deproteinized Root Canal Dentin. J Contemp Dent Pract 2014;15(5):581-586.

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Resin push-out bonding strength to root canal dentin: effect of the irrigation solution application prior to post cementation

Brazilian Dental Science ◽

10.14295/bds.2017.v20i2.1426 ◽

2017 ◽

Vol 20 (2) ◽

pp. 85 ◽

Cited By ~ 1

Author(s):

Silvia Michida ◽

Amanda Maria de Oliveira Dal Piva ◽

João Paulo Mendes Tribst ◽

Rodrigo Othávio Assunção Souza ◽

Geraldo Lombardo ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Adhesive System ◽

Resin Cement ◽

Fiber Post ◽

Root Canals ◽

Irrigation Solution ◽

Root Canal Dentin ◽

Push Out ◽

Resin Bonding

Objective: To evaluate the effect of different irrigation solutions prior to post cementation on the resin bonding to bovine root dentine. Material and Methods: 60 bovine roots (16 mm) were prepared to 12 mm with specific drill of a double-tapered fiber post system, included in PMMA, and divided into 6 groups, considering the irrigation solutions (IS) prior to cementation: Gr1- saline solution (control), Gr2- NaOCl 0.5 %, Gr3- NaOCl 1 %, Gr4- NaOCl 2.5 %, Gr5- NaOCl 5 %, Gr6- Chlorexidine 2 % (solution). The root canals were irrigated with IS 20 ml during 10 min. Then they were rinsed with 20 ml of distilled water and dried with paper points. One fiber post was molded with polyvinylsiloxane and 60 posts made of resin cement (PRC) were obtained moments before the cementation. The root canal dentin was etched with H2PO3 37 %/15 s + washing/drying, a multi-bottle etch&rinse adhesive system was applied and the PRC were resin luted with dual resin cement (DuolinkTM, Bisco). Each specimen was cut into 4 slices of ±1.8mm in thickness and submitted to push-out test (1 mm/min). Results: ANOVA showed that bond strength was significantly affected by IS (P<0.0001). The highest bond strengths (MPa) were those for the groups 4 (3.51 ± 1.52) and 5 (3.0 ± 1.16). The groups 1 (0.70 ± 0.30), 2 (0.80 ± 0.24), 3 (1.26 ± 0.57) and 6 (0.90 ± 0.41) were statistically similar to each other. Conclusion: The resin bonding to the root dentine was higher when higher concentrations of hypochlorite solutions were used.KeywordsBond strength; Irrigation solutions; Push-out test; Resin cement; Root canal dentin.

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