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Related Experiment Videos

Radiopacity of light-cured posterior composite resins.

C M Stanford1, P L Fan, C M Schoenfeld

  • 1University of Iowa College of Dentistry.

Journal of the American Dental Association (1939)
|November 1, 1987
PubMed
Summary
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This study evaluated 11 light-cured posterior composite resins. Their radiopacity varied enough on radiographs for easy distinction from tooth structure.

Area of Science:

  • Dental Materials Science
  • Radiology

Background:

  • Radiopacity is a critical property for dental restorative materials.
  • Accurate radiographic assessment aids in diagnosing secondary caries and evaluating restoration integrity.

Purpose of the Study:

  • To assess and compare the radiopacity of eleven light-cured posterior composite resins.
  • To determine if radiopacity differences allow for clear visualization of restorations against tooth structures in radiographic images.

Main Methods:

  • Eleven light-cured posterior composite resins were tested.
  • Radiographic images were taken of teeth restored with these materials.
  • Radiopacity was evaluated by comparing resin restoration images to adjacent tooth structures.

Main Results:

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  • Significant variations in radiopacity were observed among the eleven composite resins.
  • The radiopacity levels were sufficient to differentiate the restoration margins from the surrounding natural tooth enamel and dentin.

Conclusions:

  • The evaluated light-cured posterior composite resins exhibit varying degrees of radiopacity.
  • These radiopacity differences are clinically significant, enabling straightforward radiographic identification of restorations and aiding in diagnostic evaluations.