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EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
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Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
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Metal artifact reduction using common dental materials.

Nicole V Hinchy1, Nina K Anderson2, Mina Mahdian1

  • 1Division of Diagnostic Imaging, Department of Prosthodontics and Digital Technology, Stony Brook University School of Dental Medicine, Stony Brook, NY, USA.

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|August 18, 2021
PubMed
Summary
This summary is machine-generated.

This study investigated how dental lab materials affect cone beam computed tomography (CBCT) metal artifacts. Blu-Mousse® and polyvinyl siloxane showed the greatest reduction in artifacts, particularly at lower resolutions.

Keywords:
ArtifactsCone-Beam Computed TomographyDental Materials

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Area of Science:

  • Dental Radiology
  • Biomaterials Science
  • Medical Imaging

Background:

  • Metal artifacts in cone beam computed tomography (CBCT) can degrade image quality.
  • Dental materials used in restorations are a potential source of these artifacts.
  • Understanding material-specific artifact generation is crucial for accurate diagnosis.

Purpose of the Study:

  • To evaluate the impact of various dental laboratory materials on CBCT metal artifacts.
  • To assess artifact levels at different CBCT resolutions (0.3mm, 0.15mm, 0.075mm).

Main Methods:

  • Seven common dental materials were tested, alongside a control (base alone).
  • Materials were scanned using a Carestream 9600 CBCT unit at three resolutions.
  • Artifacts were analyzed quantitatively (histogram analysis) and qualitatively (profile plot analysis).

Main Results:

  • No significant difference was found between most dental materials and the control.
  • Blu-mousse® and polyvinyl siloxane showed significant differences compared to control and other materials, especially at lower resolutions.
  • These materials demonstrated a reduction in perceived beam hardening and photon starvation artifacts.

Conclusions:

  • Dental materials influence CBCT metal artifacts, particularly beam hardening and photon starvation.
  • Blu-Mousse® and polyvinyl siloxane exhibited the most significant artifact reduction.
  • Findings are most pronounced at lower CBCT resolutions, impacting diagnostic accuracy.