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ENDO - Endodontic Practice Today

Edited by Bun San Chong and Edgar Schäfer

Official Publication of the Belgian Association for Endodontology and Traumatology (BAET) and the French Society of Endodontics (SFE)

ISSN (print) 1753-2809 • ISSN (online) 1753-2817


Fall 2011
Volume 5 , Issue 3

Pages: 209 - 213
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Comparative study of the radiopacity of endodontic sealers with different chemical compositions

Zeferino, Eduardo Gregatto / Cunha, Rodrigo Sanches / Bellato, Thaís Sturion / Filho, José Edir Guedes / De Martin, Alexandre Sigrist / Bueno, Carlos Eduardo da Silva

Aim: The objective of the present study was to compare the radiopacity of endodontic sealers based on three different chemical compositions: epoxy resin and calcium hydroxide (Acroseal and Sealer 26), zinc oxide eugenol (Endofill, Endométhasone N, N-Rickert), and methacrylate resin (RealSeal). Materials and methods: Three specimens measuring 10 mm in diameter and 2 mm in thickness were prepared from each test material and radiographed next to a 1- to 8-mm-thick aluminium stepwedge using occlusal films. The radiographs were digitised, and optical density was used to determine the radiopacity of the materials according to a greyscale with levels ranging from 0 to 255. The data was submitted to the variance test (ANOVA, P < 0.05) as well as to the Ryan-Einot-Gabriel-Welch and Quiot test (REGWQ) for multiple comparisons of the means. Results: The greyscale level means for the materials, in increasing order, were: Acroseal – 125.3; Sealer 26 – 144.3; Endométhasone N – 155; Endofill – 175.3; RealSeal – 183; N-Rickert – 188.3. None of the materials presented a radiopacity mean level significantly lower than that obtained with 4 mm of aluminium (111.3), which was used as a reference to compare the sealers following ANSI/ ADA specification 57 (2 mm thicker than the test specimen). Conclusions: All of the endodontic sealers evaluated presented a radiopacity level above the minimum required.

Keywords: dental materials, dental radiography, endodontics, root canal obturation, sealer

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