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.

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.

scholarly journals A comparative evaluation of the sealing ability of two calcium silicate based sealers and a resin epoxy-based sealer through scanning electron microscopy and bond strength

2021 ◽  
Vol 20 ◽  
pp. e214073
Author(s):  
Mai H. Abdelrahman ◽  
Mohamed Y. Hassan
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Calcium Silicate ◽  
Root Tip ◽  
Distributed Data ◽  
Significance Level ◽  
Sealing Ability ◽  
Group A ◽  
Group B ◽  
Scanning Electron

Aim: this study aimed to compare the sealing ability of two types of commercially available calcium silicate bioceramic based root canal sealers and a resin based root canal sealer. Methods: Twenty one single-rooted teeth were used, samples (n= 21) were randomly divided into three groups according to the sealer used (group A; ADSEAL, group B; Wellroot, group C; Ceraseal). Roots were then cleaved longitudinally in the labiolingual direction; all samples were then sectioned at three, six, and nine mm from the root tip. The penetration of sealers into the dentinal tubules was examined at 1000x with a scanning electron microscope. Data were tested for normality using Shapiro Wilk test. ANOVA test was used for analyzing normally distributed data followed by Bonferroni post hoc test for pair-wise comparison. Significance level p≤0.001. Results: groups B and C showed better sealing ability than group A in all the three sections. The coronal section showed higher sealing ability than the middle section followed by the apical section in the three tested groups. Conclusion: it can be concluded that both calcium silicate-based sealers had better sealing ability and higher bond strength than the resin epoxy- based sealer.

Effect of exposure to root canal irrigants on the push-out bond strength of calcium silicate–based cements

2020 ◽  
Author(s):  
Elena Rebolloso de Barrio ◽  
Lucía Gancedo-Caravia ◽  
Ernesto García-Barbero ◽  
Juan José Pérez-Higueras
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Calcium Silicate ◽  
Root Canal Irrigants ◽  
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 exposure to etidronic acid on the bond strength of calcium silicate-based cements after 1 and 21 days: an in vitro study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Elena Rebolloso de Barrio ◽  
Juan José Pérez-Higueras ◽  
Ernesto García-Barbero ◽  
Lucía Gancedo-Caravia
Keyword(s):  
Bond Strength ◽  
Root Canal ◽  
Calcium Silicate ◽  
Ethylenediaminetetraacetic Acid ◽  
Setting Time ◽  
Etidronic Acid ◽  
Human Teeth ◽  
Root Canal Irrigants ◽  
Push Out

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.

scholarly journals Endodontic sealers and post-endodontic waiting time affect the bond strength of the fiber posts

2020 ◽  
Vol 49 ◽  
Author(s):  
Thais Camponogara BOHRER ◽  
Patricia Eliana FONTANA ◽  
Vinícius Felipe WANDSCHER ◽  
Victor Hugo Carvalho MORARI ◽  
Rafael PILLAR ◽  
...  
Keyword(s):  
Bond Strength ◽  
Waiting Time ◽  
Root Canal ◽  
Waiting Times ◽  
Mineral Trioxide Aggregate ◽  
Fiber Post ◽  
Root Canal Filling ◽  
Fiber Posts ◽  
Endodontic Sealers ◽  
Push Out

Abstract Introduction The resistance adhesive of a fiber post can be affected by several factors, such as the endodontic sealer and post-endodontic waiting time. Objective The aim of this study was to evaluate the effect of different endodontic sealers and two different post-endodontic waiting times on the bond strength of fiber posts. Material and method Seventy-two bovine teeth were endodontically treated and filled using three endodontic sealers: eugenol-based, epoxy resin-based, or mineral trioxide aggregate-based. The specimens were stored at 37°C for 24 hours or for 30 months. After the respective storage times, the root canals were prepared for luting fiber posts using RelyX U200. Push-out tests and analysis of failures were performed. The push-out data were analyzed by two-way analysis of variance to compare the effects of the endodontic sealer and with the t-test to compare the effects of post-endodontic waiting time. Result The AH Plus sealer yielded the highest bond strength values at 30 months post-endodontics (11.26 Mpa) (p < 0.05), however no had difference with Endofill sealer at the same time. Endofill and MTA Fillapex sealers did not differ significantly in their effects, irrespective of the post-endodontic waiting time. Conclusion In conclusion, the endodontic sealer used and post-endodontic waiting time affect the adhesive resistance of fiber posts. The adhesion increases significantly when the fiber post is cemented 30 months after the root canal filling, while the adhesion is reduced when cementing immediately after root canal treatment, in particular for eugenol-based endodontic sealers.

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