Influence of calcium hydroxide dressing and acid etching on the push-out bond strengths of three luting resins to root canal dentin

ABSTRACT Objectives The aim of this study was to compare and evaluate the effect of calcium hydroxide [Ca(OH)2], 2% chlorhexidine (CHX) gel, and propolis when used as intracanal medicaments on the bond strength of a resin-based sealer (AH Plus Jet; Dentsply DeTrey, Konstanz, Germany) to the root dentin. Materials and methods Sixty freshly extracted single-rooted human teeth were utilized for this study and the crowns were decoronated. The root canals were instrumented and randomized into four groups according to the medicament used: Group I: Control; group II: Ca(OH)2; group III: CHX; group IV: Propolis. The specimens were stored for 10 days in 100% humidity at 37°C, and the intracanal dressings were removed by rinsing with 10 mL of 17% ethylenediaminetetraacetic acid followed by 10 mL of 2.5% sodium hypochlorite, then obturated with gutta-percha and AH Plus Jet sealer. A push-out test to measure the bond strength between the root canal dentin and the sealer was done. Two-way analysis of variance and Tukey’s post hoc pairwise tests were used for statistical analysis. Results The use of intracanal medicaments had shown to significantly influence the push-out bond strengths of the resin sealer used (p < 0.05). At coronal and middle thirds, there was no significant difference in bond strengths among all the four groups (p > 0.05). At apical third, the mean bond strength value for propolis group was significantly superior when compared with the other three groups (p < 0.05). The CHX group showed higher bond strength values at apical third compared with Ca(OH)2 and control groups, but it was not significant (p > 0.05). Conclusion Propolis showed superior push-out bond strength than CHX, Ca(OH)2, and control groups at apical third, while no significant differences were observed among all the groups at coronal and middle thirds. How to cite this article Shivanna V, Bhargavi R. An in vitro Comparison of the Effect of Three Different Endodontic Medicaments on the Bond Strength of a Resin-based Endodontic Sealer to the Root Canal Dentin. CODS J Dent 2016;8(1):28-32.

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Effect of calcium hydroxide dressing on push-out bond strength of endodontic sealers to root canal dentin

Brazilian Oral Research ◽

10.1590/s1806-83242014.50000002 ◽

2014 ◽

Vol 28 (1) ◽

pp. 1-6 ◽

Cited By ~ 21

Author(s):

Flávia Angélica Guiotti ◽

Milton Carlos Kuga ◽

Marco Antonio Hungaro Duarte ◽

Arnaldo Sant'Anna Júnior ◽

Gisele Faria

Keyword(s):

Bond Strength ◽

Calcium Hydroxide ◽

Root Canal ◽

Root Canal Dentin ◽

Endodontic Sealers ◽

Push Out

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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 calcium hydroxide pastes and vehicles on root canal dentin microhardness

Saudi Endodontic Journal ◽

10.4103/1658-5984.132715 ◽

2014 ◽

Vol 4 (2) ◽

pp. 53

Author(s):

MaríaG Pacios ◽

Gastón Lagarrigue ◽

MaríaE López ◽

Nicolás Nieva

Keyword(s):

Calcium Hydroxide ◽

Root Canal ◽

Root Canal Dentin

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Erratum: Number of Dental Stem Cells on Root Canal Dentin after Application of Triple Antibiotic Paste or Calcium Hydroxide: An In Vitro Study

European Journal of Dentistry ◽

10.1055/s-0040-1709090 ◽

2019 ◽

Vol 13 (02) ◽

pp. e1-e1

Author(s):

Konstantinos Gougousis ◽

Dimitrios G. Giannakoulas ◽

Vasiliki Taraslia ◽

Anastasia Agrafioti ◽

Ema Anastasiadou ◽

...

Keyword(s):

Stem Cells ◽

Calcium Hydroxide ◽

Root Canal ◽

In Vitro Study ◽

Vitro Study ◽

Dental Stem Cells ◽

Triple Antibiotic Paste ◽

Root Canal Dentin

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Effect of different surface treatments on the push-out bond strength of fiber post to root canal dentin

Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontology ◽

10.1016/j.tripleo.2009.03.047 ◽

2009 ◽

Vol 108 (2) ◽

pp. e74-e80 ◽

Cited By ~ 32

Author(s):

Ebru Özsezer Demiryürek ◽

Şafak Külünk ◽

Duygu Saraç ◽

Gözde Yüksel ◽

Bilinç Bulucu

Keyword(s):

Bond Strength ◽

Root Canal ◽

Surface Treatments ◽

Fiber Post ◽

Root Canal Dentin ◽

Push Out

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Adhesive Durability Inside the Root Canal Using Self-adhesive Resin Cements for Luting Fiber Posts

Operative Dentistry ◽

10.2341/17-017-l ◽

2017 ◽

Vol 42 (6) ◽

pp. E167-E176 ◽

Cited By ~ 2

Author(s):

K Bitter ◽

A Maletic ◽

K Neumann ◽

L Breschi ◽

G Sterzenbach ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Fiber Post ◽

Resin Cements ◽

Adhesive Resin ◽

Fiber Posts ◽

Silver Deposits ◽

Bond Strengths ◽

One Year ◽

Push Out

SUMMARY Objectives: The aim of the study was to investigate the effects of various self-adhesive resin cements on the push-out bond strengths and nanoleakage expression at the luting interfaces of fiber posts immediately and after one year of aging. Methods and Materials: One hundred forty-four extracted human anterior teeth were endodontically treated. After post space preparation, fiber posts were luted using five commercially available self-adhesive resin (SAR) cements and a core build-up material applied with a self-etch adhesive (BF: Bifix SE/Rebilda Post, VOCO; CSA: Clearfil SA Cement/Rely X Fiber Post, 3M ESPE; RX: RelyX Unicem 2/Rely X Fiber Post, 3M ESPE; SPC: Speed Cem/FRC Postec, Ivoclar Vivadent; SMC: Smart Cem/X Post, Dentsply; RB: Rebilda DC-Futurabond/Rebilda Post; n=22). For each group, half of the specimens were subjected to thermocycling (TC) (5°C-55°C, 10,000 cycles) and stored humid for one year at 37°C. Push-out bond strength data of six slices (thickness 1 mm) per root and nanoleakage expression of representative specimens were evaluated after 24 hours (baseline) and after TC and storage for one year (aging), respectively. Results: Bond strength differed significantly among resin cements (p<0.0005) and the location inside the root canal (p<0.0005), but not by aging (p=0.390; repeated-measures analysis of variance). SMC (14.6±5.8 MPa) and RX (14.1±6.8 MPa) revealed significantly higher bond strength compared to BF (10.6±5.4 MPa) and RB (10.0±4.6 MPa) but differed not significantly from SPC (12.8±4.8) MPa; CSA (6.1±4.6 MPa) revealed significantly lower bond strength compared to all other investigated materials (p<0.05; Tukey Honestly Significantly Different). Qualitative nanoleakage analysis revealed more silver deposits at the interface in all groups after aging. For CSA, a large amount of silver deposits inside the cement was also observed at baseline and after aging. Conclusions: Fiber post luting using SAR cements demonstrated reliable bond strengths. Product-specific differences and initial degradation effects could be demonstrated.

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Adhesion of real seal to human root dentin treated with different solutions

Brazilian Dental Journal ◽

10.1590/s0103-64402012000500009 ◽

2012 ◽

Vol 23 (5) ◽

pp. 521-526 ◽

Cited By ~ 3

Author(s):

Renata Baldissera ◽

Ricardo Abreu da Rosa ◽

Márcia Helena Wagner ◽

Milton Carlos Kuga ◽

Fabiana Soares Grecca ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Failure Modes ◽

Chlorhexidine Gluconate ◽

The Other ◽

Significant Difference ◽

Root Dentin ◽

Bond Strengths ◽

Group 2 ◽

Push Out

The aim of this study was to evaluate the effects of different irrigants on sealer-dentin bond strength when using Real Seal. Thirty single-rooted teeth were divided into 3 groups. In one group, the teeth were irrigated with 3 mL of 2.5% NaOCl after each file change, flushed with 17% EDTA for 3 min and finally rinsed with 3 mL of 2.5% NaOCl. In the other two groups, rinse with NaOCl was replaced with 2% chlorhexidine gluconate (CHX) and 0.9% saline, respectively. Each root was sectioned transversally into apical, middle and coronal thirds to obtain 2-mm-thick slices. Each slice was filled with Real Seal and Resilon. Push-out test was used to analyze bond strength and failure modes were classified as adhesive, cohesive or mixed, according to SEM observations. The push-out test did not reveal any statistically significant difference (p>0.05) between the irrigants. However, the groups exhibited significantly different (p<0.05) bond strengths in terms of the root canal third. Higher bond strength was observed at the apical third when compared with coronal third, while middle third presented intermediary values. Fifteen specimens were analyzed by SEM (5 per group). Eleven specimens exhibited adhesive failures (5 in saline, 4 in NaOCl and 2 in CHX group); 2 cohesive failures were observed in the CHX group, and 1 mixed failure each was observed in the CHX and NaOCl groups. The tested irrigants did not influence the bond strength of Resilon and Real Seal to dentin. The apical third exhibited higher mean bond strengths and adhesive failures were predominant.

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Effect of Nd:YAG laser in the bond strength of fiberglass posts

Brazilian Dental Science ◽

10.14295/bds.2015.v18i4.1164 ◽

2015 ◽

Vol 18 (4) ◽

pp. 19

Author(s):

Rayssa Ferreira Zanatta ◽

Beatriz Maria da Fonseca ◽

Stella Renata Steves ◽

Carlos Rocha Gomes Torres ◽

Sergio Eduardo Paiva Gonçalves

Keyword(s):

Bond Strength ◽

Laser Irradiation ◽

Nd:Yag Laser ◽

Root Canal ◽

Testing Machine ◽

Adhesive System ◽

Bonding Performance ◽

Fiber Posts ◽

Bond Strengths ◽

Push Out

<p>The aim of the present study was to compare the effects of Nd:YAG laser application in root canals on bond strengths of fiber posts. Thirty single-rooted bovines were randomly divided into three groups (n=10); root canal instrumentation was performed, and pretreatment was conducted as follows: C group: conventional treatment (without laser irradiation); ALC group: Nd:YAG laser was applied after adhesive; and LAC group: Nd:YAG laser was applied before adhesive. The fiber posts Rebilda 15 DC (Voco) were cemented with an adhesive system and resin cement, in accordance with the manufacturer’s instructions. Six slices with 1.0mm height was obtained for of each root and bond strength was measured by push-out test using a universal testing machine (0.5 mm/min). Data were analyzed using Kruskal-Wallis and Dunn’s tests (p <0.05). Push-out bond strengths to root canal dentin were affected by the type of treatment and root third. The use of Nd:YAG laser after the application of adhesive system had a higher bonding performance compared with the use of laser before the application. Also, cervical and medium third presented higher bond strength values than the apical third. It must be conclude that the laser irradiation over the non-cured adhesive system is more efficient for increase in bond strength than the irradiation after the application of the adhesive. However, the use of 60mJ of laser energy is not sufficient to improve the bonding performance.</p>

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