scholarly journals Comparison of Push-out Bond Strength of Gutta-percha to Root Canal Dentin in Single-cone and Cold Lateral Compaction Techniques with AH Plus Sealer in Mandibular Premolars

2015 ◽  
Vol 9 (4) ◽  
pp. 221-225 ◽  
Author(s):  
Hadi Mokhtari ◽  
Saeed Rahimi ◽  
Mohammad Forough Reyhani ◽  
Saeedeh Galledar ◽  
Hamid Reza Mokhtari Zonouzi
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Gutta Percha ◽  
Single Cone ◽  
Ah Plus ◽  
Root Canal Dentin ◽  
Push Out

scholarly journals Influence of Root Canal Filling Techniques on Sealer Penetration and Bond Strength to Dentin

2017 ◽  
Vol 28 (3) ◽  
pp. 380-384 ◽  
Author(s):  
Luciana Martins Domingues de Macedo ◽  
Yara Silva-Sousa ◽  
Silvio Rocha Corrêa da Silva ◽  
Samantha Schaffer Pugsley Baratto ◽  
Flares Baratto-Filho ◽  
...  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Laser Scanning Microscopy ◽  
Filling Material ◽  
Root Canal Filling ◽  
Significant Difference ◽  
Single Cone ◽  
Ah Plus ◽  
The Impact ◽  
Push Out

Abstract The influence of root canal filling techniques on the penetration of AH Plus into dentinal tubules was evaluated using confocal laser scanning microscopy (CLSM) and the impact on the bond strength of the filling material on the root dentin was evaluated using the push-out test. Roots of the maxillary central incisors (n=40) were prepared with ProTaper Universal and assigned to four groups: lateral condensation, vertical compaction, modified Tagger hybrid and single cone. After root canal filling with gutta-percha and AH Plus, along with the addition of 0.01% fluorescein, the roots were cut into 2-mm slices. CLSM was performed on the first slice of each root third, followed by the push-out test. The second slice was analyzed under SEM. ANOVA demonstrated a statistically significant difference between the root canal filling techniques and the root thirds (p<0.05). For percent penetration, Tukey’s test showed that the vertical compaction (91.77±13.51), lateral condensation (89.18±10.91) and modified Tagger hybrid (87.53±15.42) presented the highest values, which significantly differed (p<0.05) from those of the single cone (78.19±22.46). For bond strength (MPa), lateral condensation (3.42±0.54) and vertical compaction (3.47±0.53) had the highest values (p<0.05), while the modified Tagger hybrid (2.19±0.41) and single cone (0.54±0.21) had the lowest. In conclusion, the lateral condensation, vertical compaction and Modified Tagger’s hybrid techniques resulted in greater penetration and bond strength to the intra-radicular dentin.

scholarly journals Data on the push out bond strength of three different root canal treatment sealers

2021 ◽  
Vol 17 (1) ◽  
pp. 67-72
Author(s):  
Deepak Kurup ◽  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Testing Machine ◽  
Microscopic Analysis ◽  
T Test ◽  
Root Canal Treatment ◽  
Gutta Percha ◽  
Significant Difference ◽  
Ah Plus ◽  
Push Out

It is of interest to document data on the push – out bond strength of three different root canal treatment sealers such as MTA Fillapex (MTA based), AH plus (Epoxy Resin based) and Apexit plus (Calcium hydroxide based). Forty-five freshly extracted human maxillary central incisors with closed apices were selected randomly. All the teeth were sectioned at cement-enamel junction using a diamond disc before starting the root canal preparation to obtain root length of 12 mm. All teeth were instrumented using ProTaper rotary instruments. 5.25% sodium hypoclorite was used for irrigation between instrumentation followed by 17% EDTA, and final rinse by saline. Obturation procedures were done using the gutta-percha single cone technique. 45 roots were randomly assigned to 3 groups of 15 for obturation with gutta-percha cones and 1 of the 3 sealers (n=15). Group 1 = MTA Fillapex sealer + gutta-percha: Group 2 = AH plus sealer + gutta-percha: Group 3 = Apexit plus sealer + gutta-percha. The roots were sectioned horizontally to its canal into 3 sections: Coronal, Mid-root and Apical-thirds using a precision cutting machine, with a thickness of 3 mm. The specimens were subjected to push-out test using a universal testing machine that carried a plunger. The loading speed was 1mm/min until the dislodgment of the material occurred. The independent t- test was used to compare the mean scores among the study groups. The level of significance was set at 5% for all tests. After the push-out bond strength test, each sample was evaluated under stereomicroscope (40x) to determine the mode of failure and recorded as one of the following categories: adhesive, cohesive or mixed. The observations thus obtained were subjected to statistical analysis using Student - t test. AH Plus showed significantly higher values than MTA Fillapex and Apexit plus (p < 0.05). Amongst the push-out bond strength AH Plus sealer showed significant difference from MTA Fillapex and Apexit plus groups. There was no significant difference between MTA Fillapex and Apexit plus however (p>0.05). Microscopic analysis displayed that the majority of the modes were cohesive failures for AH Plus, adhesive failures for MTA Fillapex and mixed failures for Apexit Plus. . Thus, AH Plus had the highest bond strength and MTA Fillapex had the lowest bond strength to root dentin. Mean push-out bond strength values were ranked as follows; AH Plus >Apexit Plus > MTA Fillapex. Microscopic analysis displayed that the majority of the modes were cohesive failures of AH Plus, adhesive failures for MTA Fillapex and mixed failures for Apexit Plus.

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

2016 ◽  
Vol 8 (1) ◽  
pp. 28-32
Author(s):  
Vasundhara Shivanna ◽  
Ravi Bhargavi
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Control Groups ◽  
Group I ◽  
Ah Plus ◽  
Bond Strengths ◽  
Root Canal Dentin ◽  
And Control ◽  
Push Out

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.

scholarly journals Push-Out Bond Strength, Characterization, and Ion Release of Premixed and Powder-Liquid Bioceramic Sealers with or without Gutta-Percha

Scanning ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Cristina Retana-Lobo ◽  
Mario Tanomaru-Filho ◽  
Juliane Maria Guerreiro-Tanomaru ◽  
Marianella Benavides-García ◽  
Erick Hernández-Meza ◽  
...  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Calcium Ion ◽  
Ion Release ◽  
Root Canal Filling ◽  
Human Teeth ◽  
Gutta Percha ◽  
Single Cone ◽  
Strength Characterization ◽  
Push Out

Objective. To evaluate the push-out bond strength of premixed and powder-liquid bioceramic sealers with or without gutta-percha (GP) cone. Materials and Methods. Radicular dentin samples were prepared from 80 single-rooted human teeth. After root canal preparation using ProTaper® and irrigation with NaOCl and EDTA, teeth were divided according to the root canal sealer ( n = 20 ): AH Plus®, EndoSequence® BC Sealer™, ProRoot® Endo Sealer, and BioRoot™ RCS. Samples were randomly divided into two subgroups ( n = 10 ): GP-S: root canal filling using the single-cone technique, or S: filling with only sealer. Specimens were kept at 37°C and 100% humidity in calcium-free PBS for 30 days. The push-out bond strength was measured in MPa. Fractured specimens were observed at 25x to evaluate the type of failure. pH and calcium ion release were measured at different experimental periods. Raman and SEM-EDAX analyses were performed for root canal sealers. Data were analysed using three-way analysis of variance (ANOVA) and post hoc Tukey test at a significance of P < 0.05 . Results. Push-out bond strength was greater for samples obturated with only sealers (S) than samples obturated with the single-cone technique (GP-S) ( P < 0.05 ). BioRoot™ RCS had greater bond strength than EndoSequence® BC Sealer™. Adhesive failures between cement and gutta-percha cone (87.5%) were predominant in the GP-S. Cohesive failures were predominant for S (80%). BioRoot™ RCS and ProRoot® ES presented higher alkalinization potential than the premixed sealer (EndoSequence® BC Sealer™). Powder-liquid bioceramic sealers (BioRoot™ RCS and ProRoot® ES) released the highest cumulative amount of calcium (28.46 mg/L and 20.05 mg/L). Conclusion. Push-out test without gutta-percha cone presents higher bond strength for bioceramic sealers. Powder-liquid calcium silicate-based sealers present greater bioactivity related to alkalinization potential and calcium ion release.

scholarly journals 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

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.

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

2009 ◽  
Vol 108 (2) ◽  
pp. e74-e80 ◽  
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

scholarly journals Micro-push-out bond strength of Mineral—based root canal sealer in canals with different tapers.

2021 ◽  
Vol 10 (1) ◽  
pp. 1-7
Author(s):  
Nunna Vasavi ◽  
◽  
Kantheti Sirisha ◽  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Testing Machine ◽  
Root Canal Sealer ◽  
Rotary Instruments ◽  
Significant Difference ◽  
Ah Plus ◽  
Bond Strengths ◽  
The Difference ◽  
Push Out

Objective: The aim of this study was to assess the micro-push-out bond strength of a mineral-based root canal sealer, BioRoot RCS in canals prepared by K3XF rotary systems of two different tapers. Material and Methods: Eighty caries free maxillary central incisors were used in this study. The samples were allocated into 4 groups (n=20) according to the root canal sealer and taper of the rotary instruments. The samples were obturated using single cone obturation technique. From each root 1mm thick slices at coronal, middle and apical thirds were collected using hard tissue microtome under continuous water coolant. Push-out tests were done for these sections using a Universal testing machine (INSTRON 8801) at a crosshead speed of 1mm/min. One-way analysis of variance (ANOVA) was used to compare the bond strengths within groups and Tukey’s multiple post hoc analysis was used for pair-wise comparison of bond strengths. Results: AH Plus exhibited higher micro-push-out bond strength than BioRootRCS though they did not differ significantly (p>0.05). Preparation of root canals with 6% taper rotary instruments showed higher bond strength than 4% though they did not differ significantly (p>0.05). Conclusion: There was no significant difference between micro-push-out bond strength values of BioRoot RCS and AH Plus. The bond strength values were high in 6% taper canals than 4% canals though the difference was not significant statistically.

Effect of laser application on push out bond strength of FRC post to root canal dentin

2012 ◽  
pp. S11-.
Author(s):  
S Rikhtegaran ◽  
S Oskoee ◽  
F Pouralibaba ◽  
M Bahary ◽  
A. Chehrebardar
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Laser Application ◽  
Root Canal Dentin ◽  
Push Out

Effect of a zirconia primer on the push-out bond strength of zirconia ceramic posts to root canal dentin

2015 ◽  
Vol 114 (3) ◽  
pp. 398-402 ◽  
Author(s):  
Mahshid Torabi Ardakani ◽  
Rashin Giti ◽  
Masume Taghva ◽  
Samane Javanmardi
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Zirconia Ceramic ◽  
Root Canal Dentin ◽  
Push Out
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