Objective: To evaluate the effect of instrumentation techniques, irrigant solutions and specimen aging on fiberglass posts bond strength to intraradicular dentine.
Materials And Methods: A total of 120 bovine teeth were prepared and randomized into control and experimental groups resulting from three study factors (instrumentation techniques, irrigant solutions, specimen aging). Posts were cemented with RelyX U100. Samples were submitted to push-out test and failure mode was evaluated under a confocal microscope.
Results: In specimens submitted to water artificial aging, nickel-titanium rotary instruments group presented higher bond strength values in apical third irrigated with NaOCl or chlorhexi-dine. Irrigation with NaOCl resulted in higher bond strength than ozonated water. Artificial aging resulted in significant bond strength increase. Adhesive cement-dentin failure was prevalent in all the groups.
Conclusion: Root canal preparation with NiTi instruments associated with NaOCl irrigation and ethylenediaminetetra acetic acid (EDTA) increased bond strength of fiberglass posts cemented with self-adhesive resin cement to intraradicular dentine. Water artificial aging significantly increased post-Clinical significance: The understanding of factors that may influence the optimal bond between post-cement and cement-dentin are essential to the success of endodontically treated tooth restoration.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.5005/jp-journals-10024-1716 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of the Mechanical and Biological Properties of Polycaprolactone Scaffolds Produced by a Material Extrusion 3D Printer or 3D Pen: A Novel Bone Repair Strategy.
J Biomed Mater Res B Appl Biomater
January 2025
Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul, Republic of Korea.
Addressing the high cost and long cycle associated with the multistep digital restoration process involving 3D printing technology, we proposed the 3D pen as an innovative strategy for rapid bone repair. Capitalizing on the low melting point characteristic of polycaprolactone (PCL), we introduced, for the first time, the novel concept of directly constructing scaffolds at bone defect sites using 3D pens. In this in vitro study, we meticulously evaluated both the mechanical and biological properties of 3D pen-printed PCL scaffolds with six distinct textures: unidirectional (UNI) (0°, 45°, 90°), bidirectional (BID) (-45°/45°, 0°/90°), and concentric (CON).
View Article and Find Full Text PDFRevealing critical roles of alkaline passivation layer on garnet surface toward poly(vinylidene fluoride)-based composite electrolytes for solid-state lithium batteries.
J Colloid Interface Sci
December 2024
College of Physics, Qingdao University, Qingdao 266071, China. Electronic address:
The poly(vinylidene fluoride) (PVDF) has been deemed as an appealing matrix for solid polymer electrolytes due to its wide electrochemical window and excellent thermal stability. Further incorporation with garnet filler endows PVDF-based electrolyte with increased ionic conductivity and mechanical strength. However, the spontaneous formation of alkaline layer containing LiOH/LiCO on garnet surface cannot be neglected, concerning its low ionic conductivity combined with the destructive effect on electrochemical performance of PVDF-based composite electrolytes.
View Article and Find Full Text PDFRapid and reversible sodium-ion cathode materials for NASICON NaMnTiPBO achieved through Boron-substitution.
J Colloid Interface Sci
December 2024
School of Materials Science and Engineering, State Key Lab of Silicon and Advanced, Semiconductor Materials, Zhejiang University, Hangzhou 310027, PR China. Electronic address:
NaMnTi(PO) is a promising sodium-ion cathode material due to its relatively high specific capacity, excellent thermodynamic stability and low cost. However, unfavorable electron conductivity and slow kinetics limit its practical application. Here, a strategy of hetero and multivalent anion substitution is proposed to achieve high-rate performance and good capacity retention.
View Article and Find Full Text PDFInfluence of chlorhexidine dentin disinfection on universal adhesive performance: Interfacial adaptation and bond strength assessments.
PLoS One
December 2024
Departement of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.
Purpose: This study aimed to investigate the effect of chlorhexidine (CHX) cavity disinfectant on interfacial microleakage and micro-tensile bond strength (μTBS) of a universal adhesive bonded to dentin in both self-etch (SE) and etch-and-rinse (ER) modes.
Methods: Class I cavities were prepared in the coronal dentin of extracted human teeth and assigned to two etching modes (SE or ER), then subdivided by disinfection with or without CHX (n = 5). Cavities were restored using Single Bond Universal Adhesive and Filtek Z350 XT composite.
Strength characteristics and prediction model of solidified municipal sludge reinforced by dredged silt combined with sodium silicate and polyurethane.
Sci Rep
December 2024
College of Civil and Transportation Engineering, Weifang University, Weifang, 261061, China.
The treatment and resource utilization of municipal sludge and dredged silt have been rendered urgent by the acceleration of urbanization and stricter environmental protection demands. An effective solution was developed to address the challenges of poor mechanical properties and the difficulty in directly using cement-based materials for municipal sludge treatment. The utilization of dredged silt with high water content served as the foundational skeleton material.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!