Radiopacity of root filling materials using digital radiography
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Published on: July 27, 2022
J R Carvalho-Junior1, L Correr-Sobrinho, A B Correr
1Department of Restorative Dentistry, Discipline of Dental Materials, State University of Campinas, Piracicaba, SP, Brazil. jacy-junior@uol.com.br
Aim:
To evaluate radiopacity of root filling materials using digital radiography.
Methodology:
The sealers tested were AH Plus, Endofill, EndoREZ and Epiphany. Gutta-percha (Dentsply Maillefer) and Resilon cones were also tested. Acrylic plates, containing six wells, measuring 1 mm in depth and 5 mm in diameter, were prepared for the test, and filled with the materials. The test samples were radiographed together with an aluminium stepwedge calibrated in millimetres, according to ANSI/ADA Specification 57. For the radiographic exposures, digital imaging plates and an X-ray machine at 70 kVp and 8 mA were used. The object-to-focus distance was 30 cm, and the exposure time, 0.2 s. After the laser optic reading process, the software determined the radiopacity of the standardized areas, using grey-scale values, calculating the average radiographic density for each material.
Results:
The decreasing values of radiopacity of the studied materials, expressed in millimetres of aluminium equivalent, were: Resilon (13.0), AH Plus(TM) (11.2), gutta-percha (9.8), Epiphany (8.0), Endofill (6.9) and EndoREZ (6.6).
Conclusion:
All materials had radiopacity values above 3 mm of aluminium recommended by ANSI/ADA Specification 57.
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