An ex vivo comparison of the push-out bond strength of a new endodontic filling system (Smartseal) and various gutta-percha filling techniques

Odontology ◽  
2011 ◽  
Vol 100 (2) ◽  
pp. 187-191 ◽  
Author(s):  
Nikolaos Economides ◽  
Christos Gogos ◽  
Konstantinos Kodonas ◽  
Charilaos Beltes ◽  
Ioannis Kolokouris
Keyword(s):  
Bond Strength ◽  
Ex Vivo ◽  
Gutta Percha ◽  
Filling System ◽  
Push Out

scholarly journals New Methodology to Evaluate Bond Strength of Root-End Filling Materials

2015 ◽  
Vol 26 (3) ◽  
pp. 288-291 ◽  
Author(s):  
Jorge Henrique Stefaneli Marques ◽  
Yara Teresinha Corrêa Silva-Sousa ◽  
Fuad Jacob Abi Rached-Júnior ◽  
Jardel Francisco Mazzi-Chaves ◽  
Carlos Eduardo Saraiva Miranda ◽  
...  
Keyword(s):  
Bond Strength ◽  
Horizontal Plane ◽  
Acrylic Resin ◽  
Specimen Preparation ◽  
Filling Material ◽  
Material Data ◽  
Crosshead Speed ◽  
Filling Materials ◽  
Gutta Percha ◽  
Push Out

This study evaluated the bond strength of root-end filling materials to root-end cavities using a new methodology. Twenty maxillary central incisors were subjected to biomechanical preparation (#80 hand file) and sectioned transversally 2 mm short of the apex and 4 mm coronally to this point. The root cylinders were embedded in acrylic resin and positioned at 45° to the horizontal plane for preparation of root-end cavities with a diamond ultrasonic retrotip. Two groups (n=10) were formed according to the root-end filling material: MTA and Super EBA. A gutta-percha cone (#80) was tug-backed at the limit between the canal and the root-end cavity. The cavity was filled and the gutta-percha cone was removed after complete setting of the sealer. The specimens were placed in an Instron machine with the root-end filling turned downwards. The push-out shaft was inserted in the space previously occupied by the gutta-percha cone and run at a crosshead speed of 1.0 mm/min for pushing out the root-end filling material. Data were analyzed by ANOVA (α=5%). Super EBA (6.03±1.31) presented higher bond strength (MPa) than MTA (1.81±0.45) (p>0.05). There was a predominance of cohesive failures for Super EBA and mixed for MTA. The protocol of specimen preparation is effective and introduces a specific methodology for assessing bond strength of root-end filling materials to dentin. Among the materials, Super EBA presented the highest bond strength.

Push-out bond strength of Resilon/Epiphany self-etch and gutta-percha/AH26 after different irrigation protocols

2010 ◽  
Vol 110 (5) ◽  
pp. e88-e92 ◽  
Author(s):  
Noushin Shokouhinejad ◽  
Mohammad R. Sharifian ◽  
Maral Jafari ◽  
Mohammad A. Sabeti
Keyword(s):  
Bond Strength ◽  
Gutta Percha ◽  
Self Etch ◽  
Push Out

scholarly journals An In Vitro Assessment of Gutta-Percha Coating of New Carrier-Based Root Canal Fillings

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Raghad Abdulrazzaq Alhashimi ◽  
Richard Foxton ◽  
Shihab Romeed ◽  
Sanjukta Deb
Keyword(s):  
Bond Strength ◽  
Analysis Of Variance ◽  
Root Canal ◽  
Microcomputed Tomography ◽  
Gutta Percha ◽  
Orthodontic Wire ◽  
In Vitro Assessment ◽  
Post Hoc ◽  
Push Out

The first aim of this paper was to evaluate the push-out bond strength of the gutta-percha coating of Thermafil and GuttaCore and compare it with that of gutta-percha used to coat an experimental hydroxyapatite/polyethylene (HA/PE) obturator. The second aim was to assess the thickness of gutta-percha around the carriers of GuttaCore and HA/PE obturators using microcomputed tomography (μCT). Ten (size 30) 1 mm thick samples of each group (Thermafil, GuttaCore, and HA/PE) were prepared. An orthodontic wire with a diameter of 0.5 mm was attached to the plunger of an Instron machine in order to allow the push-out testing of the gutta-percha coating. Five samples of (GuttaCore and HA/PE) were scanned usingμCT. The data obtained were analysed with one-way analysis of variance and Tukey post hoc test. HA/PE obturators exhibited significantly higher push-out bond strength (P<0.001) determined at 6.84 ± 0.96 than those of Guttacore around 3.75 ± 0.75 and Thermafil at 1.5 ± 0.63. GuttaCore demonstrated significantly higher bond strength than Thermafil (P<0.001).μCT imaging revealed that the thickness of gutta-percha around the experimental HA/PE carrier was homogeneously distributed. The bondability and thickness of gutta-percha coating around HA/PE carriers were superior to those of GuttaCore and Thermafil obturators.

scholarly journals Effect of obturation technique with immediate and delayed post space preparation on apical voids and bond strength of apical gutta-percha

2018 ◽  
Vol 47 (1) ◽  
pp. 470-480 ◽  
Author(s):  
Weilin Long ◽  
Jing Li ◽  
Yiwen Liu ◽  
Hongwei Jiang
Keyword(s):  
Bond Strength ◽  
Failure Modes ◽  
Continuous Wave ◽  
Volumetric Analysis ◽  
Micro Computed Tomography ◽  
Filling Materials ◽  
Gutta Percha ◽  
Percentage Volume ◽  
Post Space ◽  
Push Out

Objective The purpose of this study was to evaluate the effect of immediate and delayed post space preparation on the sealing ability of two root canal obturation techniques by using micro-computed tomography imaging and a push-out test. Methods The root canals of 40 human maxillary premolar teeth were instrumented and divided into four groups: (A) single cone (SC) followed by immediate post space preparation, (B) continuous wave of condensation (CWC) followed by immediate post space preparation, (C) SC followed by delayed post space preparation, and (D) CWC followed by delayed post space preparation. Micro-CT scans were performed for volumetric analysis of voids and filling materials in the apical 4-mm portion. A push-out test was performed, and failure modes (adhesive, cohesive, or mixed) were assessed. Data were analyzed using the Kruskal-Wallis test and one-way analysis of variance. Results No significant differences were observed among the four groups in terms of the percentage volume of voids of the apical 4 mm or the bond strength of apical gutta-percha. Conclusions The percentage volume of voids and bond strength of apical gutta-percha were similar and were not significantly influenced by the timing of post space preparation or the obturation technique.

scholarly journals Push-Out Bond Strength of Experimental Apatite Calcium Phosphate Based Coated Gutta-Percha

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Afaf Y. Al-Haddad ◽  
Muralithran G. Kutty ◽  
Zeti Adura Che Ab Aziz
Keyword(s):  
Calcium Phosphate ◽  
Bond Strength ◽  
Failure Mode ◽  
Failure Modes ◽  
Test Machine ◽  
Filling Material ◽  
Cohesive Failure ◽  
Root Canal Filling ◽  
Gutta Percha ◽  
Push Out

Objectives. To evaluate the push-out bond strength of experimental apatite calcium phosphate coated gutta-percha (HAGP) compared to different commercially available coated gutta-percha root obturation points. Methods. Extracted teeth were selected and instrumented using ProTaper rotary files. The canals were assigned into five equal groups and obturated using matching single cone technique as follows: EndoREZ cones and EndoREZ sealer, Bioceramic Endosequence gutta-percha (BCGP) with Endosequence BC sealer, Active GP with Endosequence BC sealer (ActiV GP), conventional GP with Endosequence BC sealer, and HAGP with Endosequence BC sealer. Each root was sectioned transversally at the thickness of 1±0.1 mm to obtain 5 sections (n=25 per group). The specimens were subjected to push-out test using a Universal Test Machine at a loading speed of 0.5 mm/ min. Failure modes after push-out test was examined under stereomicroscope and the push-out data were analyzed using ANOVA and the post hoc Dunnett T3 test (p = 0.05). Results. The highest mean bond strength was yielded by HAGP followed by BCGP, ActiV GP, conventional GP, and EndoREZ. There were significant differences between EndoREZ and all other groups (p<0.001). The prominent failure mode of HAGP was mixed mode, whereas EndoREZ exhibited adhesive failure mode. Conventional GP, ActiV GP, and BCGP showed cohesive failure mode. Conclusion. HAGP showed promising results to be used as root canal filling material in combination with bioceramic sealer.

scholarly journals The Effect of 2% Chlorhexidine on the Bond Strength of Two Different Obturating Materials

2014 ◽  
Vol 15 (1) ◽  
pp. 82-85 ◽  
Author(s):  
K Dinesh ◽  
BV Sreenivasa Murthy ◽  
Indiresha H Narayana ◽  
Swaroop Hegde ◽  
KS Madhu ◽  
...  
Keyword(s):  
Bond Strength ◽  
Chlorhexidine Gluconate ◽  
Gutta Percha ◽  
Ah Plus ◽  
Group 2 ◽  
Push Out ◽  
Group 1

ABSTRACT The bond strength of ActiV GP and gutta-percha/AH plus after using 2% CHX as final rinse was evaluated in this study. According to the final irrigation regimen forty roots were divided into two groups (n = 20) randomly Group 1—5 ml of 17% EDTA; Group 2—5 ml of 17% EDTA followed by 5 ml of 2% chlorhexidine gluconate (CHX). Based on the obturation system the two groups were further subdivided into two subgroups (n = 10). The roots were horizontally sectioned from the coronal and midthird sections for measuring the push-out bond strength. CHX/AH Plus (2.795 ± 0.42 MPa) and EDTA/ActiV GP (1.489 ± 0.117 MPa) recorded the highest and lowest mean bond strength values respectively. It was concluded that when 2% CHX was used as a final irrigation rinse the bond strength of both guttapercha/AH Plus and ActiV GP obturation system improved significantly. How to cite this article Dinesh K, Murthy BVS, Narayana IH, hegde S, Madhu SK, Nagaraja S. The effect of 2% chlorhexidine on the bond strength of two different obturating materials. J Contemp Dent Pract 2014;15(1):82-85.

scholarly journals Can Type of Instrumentation and Activation of the Final Irrigant Improve the Obturation Quality in Oval Root Canals? A Push-Out Bond Strength Study

Biology ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 59
Author(s):  
Ajinkya M. Pawar ◽  
Anda Kfir ◽  
Zvi Metzger ◽  
Anuj Bhardwaj ◽  
Yeyen Yohana ◽  
...  
Keyword(s):  
Bond Strength ◽  
File Systems ◽  
Adhesive Failure ◽  
Passive Ultrasonic Irrigation ◽  
Root Canals ◽  
Filling Materials ◽  
Gutta Percha ◽  
Ah Plus ◽  
Ultrasonic Irrigation ◽  
Push Out

To appraise the outcome of file systems and activation of the final irrigant on the push-out bond strength of root fillings in oval canals. Single-rooted mandibular premolars (n = 180) with oval canals were divided into three groups (n = 60) for instrumentation: ProTaper Next (PTN), WaveOne (WO), and Self-adjusting File (SAF). The specimens were further divided into subgroups (n = 20) and subjected to final irrigation with activation by EndoActivator or passive ultrasonic irrigation or without activation. Then, the specimens were again subdivided (n = 10) and obturated with gutta-percha and AH Plus (GP-AH) or C-Point with EndoSequence bioceramic sealer (C-EBC). One-millimeter-thick horizontal slices were cut from the apical third of the root, 5 mm from the apex, and subjected to push-out bond strength (BS) testing. Specimens for which SAF was used exhibited higher BS values than those for which PTN or WO was used (p < 0.05). Activation of the final irrigation did not affect the BS of the root fillings. Root fillings made of C-EBC presented a higher BS than those made of GP-AH (p < 0.05). Adhesive failure was more common with specimens instrumented using PTN and WO. Root canals instrumented with SAF, showed the highest bond strength values for both root filling materials. The C-EBC produced significantly higher bond strength values than those of the GP-AH.

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