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Related Concept Videos

Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
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Clinically Relevant Drug Product Specifications: Methods of Establishment

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Bonding and Strength of Aggregate01:12

Bonding and Strength of Aggregate

The bond between aggregate particles and the cement matrix is significantly influenced by the shape and surface texture of the aggregates. High-strength concretes benefit from a rougher texture, which leads to stronger bonding due to greater adhesion. Angular aggregates with larger surface areas also enhance this bond. The bonding quality, however, is complex to assess as no universally accepted test exists. Good bonding is indicated when a crushed concrete specimen shows some aggregate...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies

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Related Experiment Video

Updated: Jun 17, 2026

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
04:54

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices

Published on: January 17, 2017

Bond failure in clinical practice.

Mark Ewing1

  • 1marke@braces.net.nz

Australian Orthodontic Journal
|January 2, 2010
PubMed
Summary
This summary is machine-generated.

Self-ligating brackets showed reduced failure rates over time, with improvements in adhesives. Despite initial concerns, Speed brackets did not exhibit higher failure rates compared to conventional ones.

Related Experiment Videos

Last Updated: Jun 17, 2026

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
04:54

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices

Published on: January 17, 2017

Area of Science:

  • Orthodontics
  • Biomaterials

Background:

  • Self-ligating brackets may have higher failure rates than conventional edgewise brackets due to their design.
  • Investigating bracket and adhesive performance is crucial for orthodontic treatment success.

Purpose of the Study:

  • To compare bond failure rates of Speed self-ligating brackets versus Mini-Diamond twin edgewise brackets with different adhesives.
  • To evaluate Speed bracket failure rates with different adhesive systems.
  • To assess molar attachment failure rates for Speed brackets using various adhesives.

Main Methods:

  • A 17-year retrospective study involving Speed and Mini-Diamond brackets bonded with Sequence or Transbond XT adhesives.
  • Comparison of Speed bracket failure rates using Lightbond or Enlight adhesives.
  • Analysis of molar attachment failure rates for Speed brackets with multiple adhesives.

Main Results:

  • With Sequence adhesive, Speed brackets had a 7.3% failure rate versus 11.9% for Mini-Diamond (p=0.05).
  • With Transbond XT, failure rates were similar: Speed 5.9%, Mini-Diamond 6.4% (p>0.05).
  • Speed brackets with Lightbond had a 4.2% failure rate versus 6.9% with Enlight (p=0.05); molar mini-bracket failures were higher than molar tubes.

Conclusions:

  • Speed bracket failure rates decreased over time, likely due to adhesive advancements.
  • The design of Speed brackets (small bonding pads, prominent profiles) did not lead to increased failure rates.
  • Adhesive choice and bracket type significantly influence bond failure rates in orthodontic treatment.