Evaluation of the Effect of Final Rinse with Chitosan Nanoparticles and EDTA on the Push-out Bond Strength of Resin-based and Bioceramic-based Root Canal Sealers (A Comparative In Vitro Study)

ABSTRACT Introduction: The aim of this in vitro study was to evaluate the bond strength of Photo-Activated Disinfection (PAD) system to dentin with different root canal sealers by using a push-out test design. Materials and Methods: A total of 30 extracted mandibular premolar teeth with single and straight roots were used. The crowns were removed and the root canals were prepared by using ProTaper rotary files. The smear layer was removed and the roots were randomly divided into two groups (n = 15) according to the use of PAD system as the final disinfecting agent. Each group was then divided into 6 (n = 5) subgroups and obturated with gutta-percha and 3 different root canal sealers. The groups were Group 1: Sodium hypochlorite (NaOCl) + ethylenediaminetetraacetic acid (EDTA)-AH Plus sealer; Group 2: NaOCl + EDTA + PAD-AH Plus; Group 3: NaOCl + EDTA-Sealapex; Group 4: NaOCl + EDTA + PAD-Sealapex; Group 5: NaOCl + EDTA-mineral trioxide aggregate (MTA)-Fiallapex; and Group 6: NaOCl + EDTA + PAD-MTA-Fillapex. 1-mm thickness horizontal sections (n: 5 × 4 = 20) were sliced for the push-out bond strength measurement. Results: Group 3 and 4 showed significantly lower bond strengths compared with all the other groups (P < 0.05). No statistically significant difference was found among Groups 1, 2 and 5, but there was statistically significant difference between Group 5 and 6 (P < 0.05). Conclusion: This in vitro study indicated that the PAD system adversely affected the bond strength of the MTA Fillapex root canal sealer.

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A comparative evaluation of the push-out bond strength of a resin-based sealer (AH Plus™) when two different intermediate irrigants are used, with and without a root canal brush: In vitro study

Endodontology ◽

10.4103/endo.endo_7_18 ◽

2019 ◽

Vol 31 (1) ◽

pp. 57

Author(s):

ShaliniDevindernath Aggarwal ◽

Ishan Ahmed ◽

Anita Sanap ◽

Vinay Rai ◽

Swapnil Khadtare ◽

...

Keyword(s):

Bond Strength ◽

Root Canal ◽

Comparative Evaluation ◽

In Vitro Study ◽

Vitro Study ◽

Ah Plus ◽

Push Out

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Micro Push-Out Bond Strength of Resin Composite to Dentin in Primary Dentition Using Three Universal Adhesives with Different pH: An In Vitro Study

Applied Sciences ◽

10.3390/app11146349 ◽

2021 ◽

Vol 11 (14) ◽

pp. 6349

Author(s):

Regina María Del Río Carrillo ◽

Pedro Molinero-Mourelle ◽

Vicente Vera ◽

Pablo Romero Villaba ◽

Elizabeth Casañas ◽

...

Keyword(s):

Bond Strength ◽

Resin Composite ◽

In Vitro Study ◽

Primary Dentition ◽

Vitro Study ◽

Deciduous Tooth ◽

Universal Adhesives ◽

Type Of Failure ◽

Push Out

To evaluate the bond strength of different universal adhesives on deciduous tooth dentineand their relationship with the composition and potential of hydrogen (pH). Methods: An in vitromicro push-out test on 150 samples (n = 50) per group per adhesive, namely, Adhese Universal(ADH; Ivoclar Vivadent), Futurabond U (FUT; Voco GmbH) (Test), and Scotchbond Universal withpre-conditioning (SCO; 3M) (Control), to record bond strength (BS) and type of adhesive failure.Results: The results of the different adhesives (megapascals (MPa)) varied, showing no statisticalsignificance. The corresponding averages are in MPa: ADH, 13.66 2.81; FUT, 14.48 2.88; SCO,14.98 3.96. Additionally, the frequency of type of failure was as follows: mixed (60.7%), adhesive(27.3%), and cohesive (12%). Conclusions: SCO, with a pH of 2.7, showed greater resistance tofracture, while FUT, with a pH of 2.3 and no pre-conditioning, approached the same values, being aone-step adhesive. No relationship was found between failure and type of adhesive.

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Efficacy of Fiber Post Bonding To Root Dentin after Different Obturation Techniques and Cementation Timings: In Vitro Study

Open Access Macedonian Journal of Medical Sciences ◽

10.3889/oamjms.2018.343 ◽

2018 ◽

Vol 6 (9) ◽

pp. 1707-1711

Author(s):

Rami M. Atia ◽

Nada Omar ◽

Haidy Nabil ◽

Yousra Aly

Keyword(s):

Bond Strength ◽

Statistical Significance ◽

Testing Machine ◽

In Vitro Study ◽

Resin Cement ◽

Vitro Study ◽

Endodontically Treated Teeth ◽

Root Dentin ◽

Push Out

OBJECTIVE: The aim of this in vitro study was to assess the effect of obturation technique and cementation timings on the bonding of fibre-reinforced posts to the root canal walls. METHODS: Twenty extracted teeth were randomly allocated to two groups according to the obturation technique and cementation timing. Central incisors with single canals were used after being decoronated. Every extracted tooth of the {vertical compaction group} (VC) group (n = 10) had been obturated using the {E & Q plus obturation system} with posts cemented in the same day; The other (CO) conventional group (n = 10) teeth were obturated using the conventional lateral compaction technique and posts cemented after one week. “SF“ Fiber posts were used after bonding and cementation using Rely X ARC resin cement with all the endodontically treated teeth. The push-out test was performed in a universal testing machine. Data were analysed by 2 way analysis of variance with Statistical significance was set to 0.05. RESULTS: Heat softened gutta percha group showed more push out the bond strength of the bonded posts than the conventional obturation group (p < 0.05). In the middle region, there was no statistical significance between the two groups while there was significance in the coronal and apical thirds. CONCLUSION: The vertical compaction technique and early cementation improved the bond strength of the resin posts in comparison to the conventional obturation technique with late cementation.

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