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Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
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Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
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Comparison between three glass fiber post cementation techniques.

Guido Migliau1, Luca Piccoli1, Stefano Di Carlo1

  • 1Department of Oral and Maxillofacial Sciences, "Sapienza" University of Rome, Rome, Italy.

Annali Di Stomatologia
|July 25, 2017
PubMed
Summary
This summary is machine-generated.

The study found that orthophosphoric acid etching with a dual-curing system provides superior bond strength for endodontic posts compared to self-adhesive cements. This traditional method remains a viable option for durable cementation of indirect restorations.

Keywords:
etchingglass fiber postself-adhesive cement

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Restorative Dentistry

Background:

  • Traditional cementation systems are widely used for indirect restorations.
  • Advancements in dental materials have introduced newer generation cement systems.
  • Evaluating the efficacy of these newer systems, particularly for endodontic posts, is crucial for clinical practice.

Purpose of the Study:

  • To compare the bond strength of traditional cement systems with newer generation systems.
  • To assess the viability of modern cements as substitutes for indirect restoration cementation.
  • Specifically, to evaluate cementation of endodontic posts.

Main Methods:

  • Experimental study utilizing the push-out test on root sections of treated teeth.
  • Three groups were tested: Group A (orthophosphoric acid etch, dual-curing adhesive, dual-cured resin cement, glass fiber posts), Group B (self-adhesive resin cement, glass fiber posts), and Group C (light-curing bonding agent, dual-cured resin cement, glass fiber posts).
  • Mechanical force was applied to assess the breaking resistance of the post-cement-tooth complex.

Main Results:

  • Group A exhibited the highest mean bond strength (12.58 MPa), ranging from 10.14 to 14.73 MPa.
  • Group B showed a mean bond strength of 6.58 MPa (range: 5.55–6.54 MPa).
  • Group C yielded the lowest mean bond strength of 5.7 MPa (range: 4.84–6.59 MPa).

Conclusions:

  • Combining orthophosphoric acid etching with a dual-curing adhesive and resin-composite cement provides the highest bond strength for endodontic posts.
  • Self-adhesive resin cements demonstrated significantly lower bond strength values in this study.
  • Traditional etching techniques combined with modern dual-curing systems offer a robust solution for cementation.