Comparison of Push-out Bond Strength of FiberSite and RelyX Fiber Post Systems to Root Canal Dentin

2018 ◽  
Vol 24 (1) ◽  
pp. 33-38
Author(s):  
Mustafa GÜNDOĞAR ◽  
Gülşah USLU ◽  
Koray YILMAZ ◽  
Can TOPKARA ◽  
Taha ÖZYÜREK
Author(s):  
Ebru Özsezer Demiryürek ◽  
Şafak Külünk ◽  
Duygu Saraç ◽  
Gözde Yüksel ◽  
Bilinç Bulucu

2017 ◽  
Vol 43 (7) ◽  
pp. 1180-1185 ◽  
Author(s):  
Ömer Kırmalı ◽  
Özlem Üstün ◽  
Alper Kapdan ◽  
Alper Kuştarcı

2017 ◽  
Vol 20 (2) ◽  
pp. 85 ◽  
Author(s):  
Silvia Michida ◽  
Amanda Maria de Oliveira Dal Piva ◽  
João Paulo Mendes Tribst ◽  
Rodrigo Othávio Assunção Souza ◽  
Geraldo Lombardo ◽  
...  

<p><strong>Objective</strong>: To evaluate the effect of different irrigation solutions prior to post cementation on the resin bonding to bovine root dentine. <strong>Material</strong> <strong>and</strong> <strong>Methods</strong>: 60 bovine roots (16 mm) were prepared to 12 mm with specific drill of a double-tapered fiber post system, included in PMMA, and divided into 6 groups, considering the irrigation solutions (IS) prior to cementation: Gr1- saline solution (control), Gr2- NaOCl 0.5 %, Gr3- NaOCl 1 %, Gr4- NaOCl 2.5 %, Gr5- NaOCl 5 %, Gr6- Chlorexidine 2 % (solution). The root canals were irrigated with IS 20 ml during 10 min. Then they were rinsed with 20 ml of distilled water and dried with paper points. One fiber post was molded with polyvinylsiloxane and 60 posts made of resin cement (PRC) were obtained moments before the cementation. The root canal dentin was etched with H<sub>2</sub>PO<sub>3</sub> 37 %/15 s + washing/drying, a multi-bottle etch&amp;rinse adhesive system was applied and the PRC were resin luted with dual resin cement (DuolinkTM, Bisco). Each specimen was cut into 4 slices of ±1.8mm in thickness and submitted to push-out test (1 mm/min). <strong>Results</strong>: ANOVA showed that bond strength was significantly affected by IS (P&lt;0.0001). The highest bond strengths (MPa) were those for the groups 4 (3.51 ± 1.52) and 5 (3.0 ± 1.16). The groups 1 (0.70 ± 0.30), 2 (0.80 ± 0.24), 3 (1.26 ± 0.57) and 6 (0.90 ± 0.41) were statistically similar to each other. <strong>Conclusion</strong>: The resin bonding to the root dentine was higher when higher concentrations of hypochlorite solutions were used.</p><p><strong>Keywords</strong></p><p>Bond strength; Irrigation solutions; Push-out test; Resin cement; Root canal dentin.</p>


2015 ◽  
Vol 9 (4) ◽  
pp. 233-238 ◽  
Author(s):  
Parnian Alizadeh Oskoee ◽  
Ahmad Nooroloyouni ◽  
Fatemeh Pornaghi Azar ◽  
Jafar Sajjadi Oskoee ◽  
Ahmad Pirzadeh Ashraf

Laser Physics ◽  
2009 ◽  
Vol 19 (8) ◽  
pp. 1867-1871 ◽  
Author(s):  
L. R. Calixto ◽  
M. C. Bandéca ◽  
F. B. Silva ◽  
A. N. S. Rastelli ◽  
S. T. Porto-Neto ◽  
...  

2020 ◽  
Vol 27 (3) ◽  
Author(s):  
Esma Saricam ◽  
◽  
Neslihan Bulak ◽  
Esra Özyurt ◽  
Suat Özcan ◽  
...  

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.


2019 ◽  
Vol 30 (4) ◽  
pp. 350-355 ◽  
Author(s):  
Thiago Lopes de Freitas ◽  
Rafael Pino Vitti ◽  
Milton Edson Miranda ◽  
William Cunha Brandt

Abstract The aim of this study was to evaluate the effect of different glass fiber posts (GFPs) diameters on the push-out bond strength to dentin. Forty unirradicular human teeth were endodontically treated and used for cementation of GFPs (White Post DC, FGM) with different diameters (n=10): P1 - ø 1.6 mm coronal x 0.85 mm apical; P2 - ø 1.8 mm coronal x 1.05 mm apical; P5 - ø 1.4 mm coronal x 0.65 mm apical; and PC - customized post number 0.5 with composite resin (Tetric Ceram A2, Ivoclair Vivadent). All GFPs were cemented into the root canal using a dual-curing luting composite (Variolink II, Ivoclar Vivadent). One slice (1.7 mm) of each root third of cemented GFP (cervical, middle, and apical) was submitted to push-out testing. Failure modes of all specimens were classified as: adhesive failure between resin cement and post; adhesive failure between dentin and resin cement; cohesive failure within resin cement, post or dentin; and mixed failure. The data were analyzed with two-way ANOVA and Tukey’s test (a=0.05). The highest bond strength values were presented for the P2 and PC groups. There was no statistically significant difference between the GFP thirds in each group. The groups P2, P5, and PC showed predominantly adhesive failure. For P1, the most prevalent type of failure was adhesive between resin cement and post. It may be concluded that a glass fiber post that is well adapted to the root canal presents higher bond strength values, regardless of GFP third.


2018 ◽  
Vol 43 (2) ◽  
pp. E72-E80 ◽  
Author(s):  
M Durski ◽  
M Metz ◽  
G Crim ◽  
S Hass ◽  
R Mazur ◽  
...  

SUMMARY The purpose of this study was to evaluate the push-out bond strength of two different adhesive cements (total etch and self-adhesive) for glass fiber post (GFP) cementation in simulated, long-term service (thermocycling) when the root canal is treated with chlorhexidine before cementation. One hundred twenty premolar specimens with a single root canal were selected, endodontically treated, and shaped for GFP cementation (n=120). The specimens were randomly placed into one of 12 groups (10 specimens each) according to cement (T = total-etch RelyX ARC or S = self-adhesive RelyX Unicem), treatment with chlorhexidine (N or Y: without or with), and number of thermal cycles (00, 20, or 40: 0, or 20,000 or 40,000 cycles): 1. TN00, 2. TN20, 3. TN40, 4. TY00, 5. TY20, 6. TY40, 7. SN00, 8. SN20, 9. SN40, 10. SY00, 11. SY20, 12. SY40. The root of each specimen was cut perpendicular to the vertical axis, yielding six 1.0 mm-thick sections. A push-out bond strength test was performed followed by statistical analysis using a factorial analysis of variance. Pairwise comparisons of significant factor interactions were adjusted using the Tukey test. Significant differences of push-out bond strengths were found in the four main effects (resin cement [p&lt;0.0001], treatment with chlorhexidine [p&lt;0.0001], number of cycles [p&lt;0.0001], and root third [p&lt;0.0001]) and all interactions (p&lt;0.05 for all). Both resin cements produced higher bond strength in the cervical third followed by the middle third, and lower values were detected in the apical third. Additionally, the results suggest that the use of an additional disinfection treatment with chlorhexidine before the cement application produced the highest push-out bond strength regardless of root third. Further, the thermocycling simulation decreased the bond strength for both resin cements long-term when the chlorhexidine was not applied before cementation. However, when the root canal was treated with chlorhexidine and the fiber post was cemented with self-adhesive cement, the bond strength increased after 0, 20,000 and 40,000 cycles.


2017 ◽  
Vol 42 (6) ◽  
pp. E167-E176 ◽  
Author(s):  
K Bitter ◽  
A Maletic ◽  
K Neumann ◽  
L Breschi ◽  
G Sterzenbach ◽  
...  

SUMMARY Objectives: The aim of the study was to investigate the effects of various self-adhesive resin cements on the push-out bond strengths and nanoleakage expression at the luting interfaces of fiber posts immediately and after one year of aging. Methods and Materials: One hundred forty-four extracted human anterior teeth were endodontically treated. After post space preparation, fiber posts were luted using five commercially available self-adhesive resin (SAR) cements and a core build-up material applied with a self-etch adhesive (BF: Bifix SE/Rebilda Post, VOCO; CSA: Clearfil SA Cement/Rely X Fiber Post, 3M ESPE; RX: RelyX Unicem 2/Rely X Fiber Post, 3M ESPE; SPC: Speed Cem/FRC Postec, Ivoclar Vivadent; SMC: Smart Cem/X Post, Dentsply; RB: Rebilda DC-Futurabond/Rebilda Post; n=22). For each group, half of the specimens were subjected to thermocycling (TC) (5°C-55°C, 10,000 cycles) and stored humid for one year at 37°C. Push-out bond strength data of six slices (thickness 1 mm) per root and nanoleakage expression of representative specimens were evaluated after 24 hours (baseline) and after TC and storage for one year (aging), respectively. Results: Bond strength differed significantly among resin cements (p&lt;0.0005) and the location inside the root canal (p&lt;0.0005), but not by aging (p=0.390; repeated-measures analysis of variance). SMC (14.6±5.8 MPa) and RX (14.1±6.8 MPa) revealed significantly higher bond strength compared to BF (10.6±5.4 MPa) and RB (10.0±4.6 MPa) but differed not significantly from SPC (12.8±4.8) MPa; CSA (6.1±4.6 MPa) revealed significantly lower bond strength compared to all other investigated materials (p&lt;0.05; Tukey Honestly Significantly Different). Qualitative nanoleakage analysis revealed more silver deposits at the interface in all groups after aging. For CSA, a large amount of silver deposits inside the cement was also observed at baseline and after aging. Conclusions: Fiber post luting using SAR cements demonstrated reliable bond strengths. Product-specific differences and initial degradation effects could be demonstrated.


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