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 Influence of irrigating agents on fiber postpush-out bond strength to radicular dentin sections with the different adhesive system

2017 ◽  
Vol 11 (03) ◽  
pp. 380-384 ◽  
Author(s):  
Satheesh B. Haralur ◽  
Asim Nasser A. Alasabi ◽  
Sultan A. Abohathrah Al Qahtani ◽  
Saeed Musleh S. Alqahtani
Keyword(s):  
Bond Strength ◽  
Ethylenediaminetetraacetic Acid ◽  
Adhesive System ◽  
Negative Influence ◽  
Significant Difference ◽  
Group A ◽  
Coronal Section ◽  
Group B ◽  
Self Etch ◽  
Push Out

ABSTRACT Objective: The objective of this study is to evaluate the effect of irrigating agents on push-out bond strength of resin postcemented with various adhesive systems at different radicular dentin sections. Materials and Methods:Sixty single-rooted premolar teeth were root canal treated, subsequently decorated at cementoenamel junction. The endodontic postspace was irrigated with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) for Group A (n = 30) and Group B (n = 30), respectively. The sample from each group was subdivided into three groups (10) according to luting protocol of etch-wash, self-etch, and self-adhesive. Individual teeth with cemented resin postsamples were sectioned into coronal, middle, and apical segments. Subsequently, subjected for pushout bond strength test by applying a load at 0.5 mm/min speed. The data were analyzed by three-way analysis of variance and Tukey comparison test at a significant difference level of 0.05.Results: The coronal section with 5.25% NaOCl irrigation and self-etch luting protocol provided the highest push out strength at 16.282 Mpa. The etch-wash luting protocol in both irrigations showed the lesser bond strength at 8.273 and 8.493 MPa, respectively, in coronal section.Conclusions: The self-etch adhesive system showed better push out bond strength and 17% EDTA had a negative influence on self-etch bond strength. The coronal sections had highest bond strength in comparison with apical radicular dentin sections.

scholarly journals Effect of cement type and thickness on push-out bond strength of fiber posts

2018 ◽  
Vol 12 (4) ◽  
pp. 277-282
Author(s):  
Farzaneh Farid ◽  
Khadijeh Rostami ◽  
Sareh Habibzadeh ◽  
MohammadJavad Kharazifard
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Test Results ◽  
Resin Cements ◽  
Fiber Posts ◽  
Significant Difference ◽  
Root Dentin ◽  
Group 2 ◽  
Self Etch ◽  
Push Out

Background. This study investigated the effect of the thickness of two resin cements on push-out bond strength of fiber posts to root dentin. Methods. Sixty decoronated single-rooted teeth were endodontically treated. The specimens were then randomly allocated to two groups (n=30); group 1: drill size 90 w, matching the size of fiber posts used; group 2: drill size 110, larger than the posts. The specimens in each group were divided into 2 subgroups (n=15); subgroup SE, in which the posts were cemented with self-etch Panavia F2.0 and subgroup SA, in which self-adhesive Panavia cement was used. After 72 hours, 2 slices with 1 mm of thickness were prepared from the mid-root of each specimen. Push-out bond strength test was performed in a universal testing machine at a crosshead speed of 1 mm/min. Data were analyzed with two-way ANOVA and t-test. Results. The mean bond strengths of the posts cemented in matched-size spaces for SE and SA groups were 4.02±1.6 and 4.12±2.3 MPa, respectively. For posts cemented in oversized spaces, the values were 4.9±2.3 and 2.8±1.3 MPa, respectively. In matched-size spaces, there was no significant difference between the two groups. Conclusion. The results of this study suggested that increasing the cement thickness would reduce the bond strength of fiber posts to root dentin when self-adhesive cements are used; however, self-etch adhesives were not affected.

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.

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 Effect of Dentin Pretreatment with Chlorhexidine on Push-Out Bond Strength of Composite Restorations in Severely Damaged Primary Anterior Teeth

2020 ◽  
Author(s):  
Shabnam Milani ◽  
Bahman Seraj ◽  
Zahra Khoshlafz ◽  
Niusha Abazarian
Keyword(s):  
Bond Strength ◽  
Testing Machine ◽  
Bonding Agent ◽  
Bonding Agents ◽  
Composite Restorations ◽  
Anterior Teeth ◽  
Significant Difference ◽  
Self Etch ◽  
Push Out

Objectives: Achieving durable restorations with adequate strength in severely damaged primary anterior teeth in children is a priority. The aim of this study was to investigate the effect of dentin pretreatment with chlorhexidine on push-out bond strength of composite restorations. Materials and Methods: In this in vitro experimental study, 56 extracted primary anterior teeth were randomly divided into 4 groups: (1) saline and total-etch bonding agent, (2) chlorhexidine and total-etch bonding agent, (3) saline and self-etch bonding agent, and (4) chlorhexidine and self-etch bonding agent. After the application of bonding agents, the post space was filled with Z250 composite resin. Following thermocycling of the samples, the push-out test was performed using a universal testing machine, and the results were analyzed with two-way ANOVA. Results: The mean push-out bond strength values in groups 1 to 4 were 5.7, 8.39, 5.35, and 7 MPa, respectively. Chlorhexidine groups had significant differences with saline groups in bond strength (P<0.05) but there was no statistically significant difference between the self-etch and total-etch bonding agents in the groups (P>0.05). Conclusion: Both types of bonding agents (self-etch and total-etch) exhibited favorable results in radicular dentin of primary anterior teeth; however, pre-treatment with chlorhexidine increased the push-out bond strength of composite restorations in primary anterior teeth.

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 Effect of different root dentin pretreatment protocols on the bond strength of fiber posts cemented with core buildup material

2019 ◽  
Vol 22 (1) ◽  
pp. Process
Author(s):  
Rowaida Naeem ◽  
Maged Zohdy ◽  
Tarik Salah
Keyword(s):  
Bond Strength ◽  
Failure Modes ◽  
Testing Machine ◽  
Calculated Data ◽  
Core Material ◽  
Fiber Posts ◽  
Stereo Microscope ◽  
Root Dentin ◽  
Self Etch ◽  
Push Out

Objective: The purpose of the study was to evaluate the push out bond strength of fiber posts -after cementaion with core build up material and dentin pretreatment using different adhesive protocols- in different root regions. Material and Methods: 28 endodonticaly treated human premolars were divided into 4 groups. The post spaces were treated with 1 of 4 different dentin bonding protocols: total etch light cured adhesive, solobond m; total etch dual cured adhesive, Excite f DSC; self-etching light cured adhesive, single bond universal; or self-etching dual cured adhesive, futura bond dc. Fiber posts, were luted with dual cured core material. The roots were cut into 2-mm-thick sections, in cervical, middle, and apical regions. Push-out tests were performed with a universal testing machine, and bond strength values (MPa) were calculated. Data were analyzed with 1- and 2-way analysis of variance and Tukey multiple comparison tests (a=.05). Failure modes were examined under stereo microscope. Results: The highest mean bond strength values were obtained for self-etch dual cured adhesive, (9.69 MPa). The Total etch light cured adhesive (2.81 MPa) showed the lowest bond strength. Self-etch light-polymerized and total etch dual-polymerized adhesives provided similar bond strengths (5.37, 5.72 respectively). The regional bond strength values were reduced significantly in apical post space (P<0.01). The most predominant failure type was mixed failure followed by adhesive failure. Conclusion: Dentin pretreatment using self-etch dual cured adhesives prior to fiber posts cementation offers a high bond strength. While using total-etch light cured adhesives is not recommended due to the low bonding quality. KeywordsDentin; Bond strength; Fiber posts; Core buildup material; Adhesive protocols; Pretreatment.

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