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

Abstract Background After reparation of root perforations with calcium silicate-based cements (CSBC), the surface of the material is expected to be exposed to root canal irrigants (RCI) while resuming the root canal treatment. Methods The aim of this study was to compare the effect of exposure to a mixture of sodium hypochlorite (NaOCl) and etidronic acid (HEBP) or other irrigants on the Push Out Bond Strength (POBS) of CSBC after two different setting times. 240 root slices 1 mm thick were obtained from single-rooted human teeth. A 1.4 mm diameter perforation was performed on each slice and filled with Biodentine (BD) or ProRoot MTA (PMTA). After 1 or 21 days they were exposed to 17% ethylenediaminetetraacetic acid, 5.25% NaOCl, a mixture of 5.25% NaOCl and 9% HEBP (NaOCl + HEBP) or saline (n = 15) and submitted to a push-out test. POBS results were analysed with ANOVA and Tukey tests. Results BD showed higher POBS than PMTA after 1 day (p < .05). After 21 days no differences were found between materials. After 1 day exposure to NaOCl + HEBP resulted in higher POBS, compared to the other irrigants (p < .05). Conclusion POBS results are influenced by the cement, the setting time and the exposure to irrigants.

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

Microscopy Research and Technique ◽

10.1002/jemt.22969 ◽

2017 ◽

Vol 81 (2) ◽

pp. 214-219 ◽

Cited By ~ 4

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

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Push-out bond strength of two new calcium silicate-based endodontic sealers to root canal dentine

International Endodontic Journal ◽

10.1111/j.1365-2591.2011.01925.x ◽

2011 ◽

Vol 44 (12) ◽

pp. 1088-1091 ◽

Cited By ~ 61

Author(s):

B. Sagsen ◽

Y. Ustün ◽

S. Demirbuga ◽

K. Pala

Keyword(s):

Bond Strength ◽

Root Canal ◽

Calcium Silicate ◽

Endodontic Sealers ◽

Push Out

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

Applied Sciences ◽

10.3390/app11156849 ◽

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

Brazilian Dental Journal ◽

10.1590/0103-6440201801766 ◽

2018 ◽

Vol 29 (2) ◽

pp. 189-194 ◽

Cited By ~ 1

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.

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