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Comparative radiopacity of six flowable resin composites
Zeynep Ergücü1, L Sebnem Türkün, Erinç Onem
1Restorative Dentistry & Endodontics, Ege University School of Dentistry, Izmir, Turkey. zergucu@yahoo.com
Operative Dentistry
|August 3, 2010
Summary
Radiopacity varies significantly among flowable composites. Careful selection is crucial for detecting secondary caries beneath posterior restorations, as some materials offer better visibility than others.
Area of Science:
- Dental Materials Science
- Radiology in Dentistry
Background:
- Flowable composites are widely used in posterior restorations.
- Radiopacity is a critical property for detecting secondary caries.
- Understanding the radiopacity of different flowable composites is essential for clinical decision-making.
Purpose of the Study:
- To compare the radiopacity of six commercially available flowable composites.
- To determine the mean gray values (MGVs) of these materials using digital image analysis.
Main Methods:
- Six flowable resin composites were evaluated.
- Sample discs (6 x 1 mm) and 1-mm thick tooth slices were prepared.
- Mean gray values were measured using histogram function; ANOVA and Tukey tests were applied for statistical analysis.
Main Results:
- Gradia Direct LoFlo, Estelite Flow Q, and dentin showed radiopacity close to 1 mm aluminum (Al).
- Tetric N Flow and Clearfil Majesty Flow exhibited higher radiopacity than enamel.
- Filtek Supreme XT Flow demonstrated radiopacity similar to enamel.
Conclusions:
- There is considerable variation in the radiopacity of flowable composites.
- Material selection should consider radiopacity to facilitate secondary caries detection under posterior restorations.
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