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Radiopacity of 28 Composite Resins for Teeth Restorations
Ricardo Raitz1, Patrizia Dubinskas Moruzzi2, Glauco Vieira3
1Professor, Department of Oral Pathology, Oral Diagnosis and Oral Radiology, Sao Leopoldo Mandic Research Center, Sao Paulo, Brazil, Phone: +551136735270,
The Journal of Contemporary Dental Practice
|May 22, 2016
Summary
This study evaluated 28 composite resins, finding that many possess sufficient radiopacity to detect gaps between restorations and tooth structure, crucial for preventing restoration failure. Some materials exceeded enamel radiopacity, aiding clinical assessment.
Area of Science:
- Dental Materials Science
- Radiology in Dentistry
- Restorative Dentistry
Background:
- Radiopacity is essential for evaluating the marginal adaptation of dental restorations.
- Assessing radiopacity helps identify microleakage and restoration gaps, common causes of failure.
Purpose of the Study:
- To assess and compare the radiopacity of 28 light-cured composite resins.
- To compare the radiopacity of these resins against enamel, dentin, and aluminum standards.
Main Methods:
- Digital radiography was used to image composite resin disks (0.2, 0.5, 1 mm).
- Radiopacity was quantified using digital image processing.
- Comparisons were made with aluminum penetrometers and human tooth sections.
Main Results:
- All tested materials met or exceeded the radiopacity of aluminum.
- Most composites showed radiopacity similar to or greater than enamel; Durafill was less radiopaque.
- Many composite resins demonstrated significantly higher radiopacity than enamel, aiding visualization of restoration margins.
Conclusions:
- Sufficient radiopacity is vital for esthetic restorative materials to ensure accurate marginal adaptation assessment.
- The study identified specific composite resins with adequate radiopacity for detecting restoration-tooth boundaries.
- Proper radiopacity allows clinicians to identify microleakage, preventing restoration failure.
