Comparative study of radiopacity of resin-based and glass ionomer-based bulk-fill restoratives using digital radiography
| Autor: | Elif Tarim Ertas, Elif Yasa, Ebru Kucukyilmaz, Bilal Yasa |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Radiodensity Composite number Acrylic Resins Glass ionomer cement Dentistry Bulk fill stomatognathic system Radiography Dental Dentin medicine Humans Composite material Dental Enamel General Dentistry Digital radiography Enamel paint business.industry Silicon Dioxide Resin Cements Radiographic Image Enhancement stomatognathic diseases medicine.anatomical_structure visual_art visual_art.visual_art_medium business Tooth |
| Zdroj: | Journal of Oral Science. 57:79-85 |
| ISSN: | 1880-4926 1343-4934 |
| Popis: | This study investigated the radiopacity values of glass ionomer- and resin-based bulk-fill restoratives of different thicknesses using digital radiography. Two glass ionomer-based and three resin-based bulk-fill restoratives, and a conventional composite were studied. Five disc-shaped specimens were prepared from each of these materials at three different thicknesses; specimens of enamel and dentin with the same thicknesses were also prepared. Materials were placed over a complementary metal oxide-semiconductor sensor together with the tooth specimen and an aluminum step-wedge, and then exposed using a dental X-ray unit. The images were analyzed using a software program to measure the mean gray values (MGVs), which were converted to equivalent aluminum thicknesses. Two-way ANOVA was used to investigate the significance of differences among the groups. The GCP Glass Fill specimens showed the lowest radiopacity values, and the Quixfil specimens had the highest values. All materials had higher radiopacity values than enamel and dentin, except for GCP Glass Fill, which had a radiopacity similar to that of enamel. The resin-based bulk-fill restoratives had significantly higher radiopacity values than glass ionomer-based restoratives. All of the tested materials showed radiopacity values higher than that of dentin, as recommended by the ISO. |
| Databáze: | OpenAIRE |
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