scholarly journals Effect of Blood Contamination on The Push-Out Bond Strength of Calcium Silicate Cements

2018 ◽  
Vol 29 (2) ◽  
pp. 189-194 ◽  
Author(s):  
Flavia Kolling Marquezan ◽  
Patricia Maria Poli Kopper ◽  
Angela Isabel dos Santos Dullius ◽  
Diego Machado Ardenghi ◽  
Renata Grazziotin-Soares
Keyword(s):  
Bond Strength ◽  
Calcium Silicate ◽  
Failure Modes ◽  
Cohesive Failure ◽  
Blood Contamination ◽  
Whitney Test ◽  
Calcium Silicate Cements ◽  
Root Dentin ◽  
Push Out ◽  
Over Time

Abstract This study investigated the effect of blood-contamination on the push-out bond strength of BiodentineTM (BD) and MTA Angelus® (MTA-A) to root dentin over time. Twenty-five teeth were sectioned horizontally to obtain 120 root slices. The lumens were filled with MTA-A or BD: 60 for each cement (30 uncontaminated and 30 blood contaminated). Push out bond strength to dentin was assessed at 24 h (n=10), 7 days (n=10) and 28 days (n=10). Failure modes were classified as: cohesive, adhesive or mixed failure. Two-way ANOVA was used to investigate the interaction between blood contamination vs. hydration period. Mann Whitney test compared different materials in each period, and it also compared the contaminated versus uncontaminated material for each period. Friedman, followed by Dunn`s test, compared periods of hydration for each material, regardless of blood contamination. Failure modes were reported descriptively. The interaction hydration period vs. blood contamination was highly significant for MTA-A (P=0.001) and it was not significant for BD (P=0.474). There were no differences between bond strength of uncontaminated and contaminated BD in any of the periods. Bond strength of uncontaminated MTA-A increased at each time of hydration; but it remained stable over time for blood-contaminated samples. BD had higher bond strength than MTA-A in all periods of hydration. Cohesive failure predominated. Only for MTA-A, the over time bond strength to dentin was affected by blood contamination.

Push-out bond strength of calcium-silicate cements following Er:YAG and diode laser irradiation of root dentin

2019 ◽  
Vol 34 (1) ◽  
pp. 201-207
Author(s):  
Fatemeh Mohammadian ◽  
Soroush Soufi ◽  
Fatemeh Dibaji ◽  
Pegah Sarraf ◽  
Nasim Chiniforush ◽  
...  
Keyword(s):  
Bond Strength ◽  
Laser Irradiation ◽  
Diode Laser ◽  
Calcium Silicate ◽  
Calcium Silicate Cements ◽  
Root Dentin ◽  
Push Out

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

2012 ◽  
Vol 23 (5) ◽  
pp. 521-526 ◽  
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.

Comparison of Push-Out Bond Strength of Three Calcium Silicate Cements to Dentin

2016 ◽  
Vol 22 (1) ◽  
pp. 29-34
Author(s):  
İbrahim ERSOY ◽  
Evren OK ◽  
Hüseyin ERTAŞ ◽  
Gökhan SAYGILI
Keyword(s):  
Bond Strength ◽  
Calcium Silicate ◽  
Calcium Silicate Cements ◽  
Push Out

Push-out bond strength of three calcium silicate cements to root canal dentine after two different irrigation regimes

2013 ◽  
Vol 18 (4) ◽  
pp. 1141-1146 ◽  
Author(s):  
Davut Çelik ◽  
Kürşat Er ◽  
Ahmet Serper ◽  
Tamer Taşdemir ◽  
Kadir Tolga Ceyhanlı
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Calcium Silicate ◽  
Irrigation Regimes ◽  
Calcium Silicate Cements ◽  
Push Out

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.

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.

Effect of novel chelating agents on the push-out bond strength of calcium silicate cements to the simulated root-end cavities

2017 ◽  
Vol 81 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Nidambur Vasudev Ballal ◽  
Özgür İlke Ulusoy ◽  
Shubha Chhaparwal ◽  
Kishore Ginjupalli
Keyword(s):  
Bond Strength ◽  
Calcium Silicate ◽  
Chelating Agents ◽  
Calcium Silicate Cements ◽  
Push Out

scholarly journals The Impact of Thermocycling Process on the Dislodgement Force of Different Endodontic Cements

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Mohammad Ali Saghiri ◽  
Armen Asatourian ◽  
Franklin Garcia-Godoy ◽  
James L. Gutmann ◽  
Nader Sheibani
Keyword(s):  
Bond Strength ◽  
Calcium Silicate ◽  
Thermal Stresses ◽  
The Other ◽  
Mode Of Failure ◽  
Root Dentin ◽  
The Impact ◽  
Push Out

To evaluate the effects of thermocycling (500 cycles, 5°C/55°C) on the push-out bond strength of calcium silicate based cements including WMTA, Nano-WMTA, and Bioaggregate to root dentin. Forty-eight dentin slices were prepared and divided into 3 groups (n=16) and filled with Angelus WMTA, Nano-WMTA, or Bioaggregate. After incubation, half of the samples were thermocycled while the other half remained untreated. Push-out bond strength was calculated, and the modes of the bond failures were determined by SEM. The highest bond strength was seen in nonthermocycled Nano-WMTA samples and the lowest in thermocycled Bioaggregate samples. The significant differences between nonthermocycled and thermocycled samples were only noticed in WMTA and Nano-WMTA groups (P<0.001). The mode of failure for thermocycled samples of all three cements was mostly cohesive. Thermocycling process can drastically affect the push-out bond strength of calcium silicate based cements. The intrastructural damages occurred due to the thermal stresses, causing cohesive failures in set materials. Sealing property of endodontic cements which have experienced the thermal stresses can be jeopardized due to occlusal forces happening in furcation cites.

scholarly journals Influence of Blood Contamination on Push-Out Bond Strength of Three Calcium Silicate-Based Materials to Root Dentin

2021 ◽  
Vol 11 (15) ◽  
pp. 6849
Author(s):  
Cristina Rodrigues Paulo ◽  
Joana A. Marques ◽  
Diana B. Sequeira ◽  
Patrícia Diogo ◽  
Rui Paiva ◽  
...  
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Calcium Silicate ◽  
Fracture Pattern ◽  
Permanent Teeth ◽  
Apical Region ◽  
Blood Contamination ◽  
Root Canal Filling ◽  
Significance Level ◽  
Push Out

A proper bond between root canal filling materials and dentin surface is essential to resist dislodgement and guarantee long-term success. Blood exposure is likely to occur in various clinical situations in which calcium silicate-based materials are used; therefore, it is fundamental to render data concerning the influence of blood on bond strength. The present study aims to evaluate the effect of blood contamination on the push-out bond strength obtained with three different biomaterials to root canal dentin; Ninety extracted human mono-radicular permanent teeth were selected. The root canals were prepared with Gates Glidden burs until a diameter of 1.10 mm was achieved. Teeth were then randomly divided into six experimental groups (n = 15) according to the presence/absence of blood contamination and biomaterial used for root canal filling (ProRoot® MTA, BiodentineTM, and TotalFill® BC Putty). After one week, each root was sectioned in three segments (coronal, middle, and apical regions). Specimens were then submitted to push-out bond strength tests. Fracture pattern evaluation was performed. The significance level was set at 5%.; Blood contamination did not affect the push-out bond strength of any of the three tested calcium silicate-based cements (p > 0.05). Regardless of blood contamination, TotalFill showed statistically higher push-out bond strength when compared with Biodentine (p = 0.040) and MTA (p = 0.004). Biodentine exhibited higher bond strength than MTA (p = 0.043). Biomaterials’ comparison within each radicular segment revealed statistically superior bond strength of both Biodentine and TotalFill over MTA (p < 0.05) in the coronal segment. TotalFill presented higher push-out bond strength regarding the apical segment compared to Biodentine (p = 0.003). Fractures were mostly adhesive.; Overall results indicate TotalFill presents the highest push-out bond strength values, followed by Biodentine and, lastly, MTA. Blood contamination did not affect the dislodgement resistance. Biomaterials’ comparison within each radicular segment revealed both TotalFill and Biodentine as the preferable alternatives for application in the coronal region. TotalFill might be the biomaterial of choice for placement in the apical region.

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