Evaluation of the Radiopacity of a Mta-Based Root-Canal Filling Material Using Digital Radiography

Abstract

Ya zış ma Ad re si / Add ress rep rint re qu ests to: Birsay Gümrü, Marmara University, Faculty of Dentistry, Department of Oral and Maxillofacial Radiology, Nisantasi, Istanbul -Turkey Elekt ro nik pos ta ad re si / E-ma il add ress: bgumru@marmara.edu.tr Ka bul ta ri hi / Da te of ac cep tan ce: 9 Ocak 2013 / January 9, 2013 ÖZETMTA-esaslı bir kök-kanal dolgu materyalinin radyo-opasitesinin dijital radyografi kullanılarak değerlendirilmesi ABS TRACTEvaluation of the radiopacity of a MTA-based rootcanal filling material using digital radiographyObjective: The aim of this study was to assess the radiopacity of a relatively new mineral trioxide aggregate (MTA)-based root-canal filling material and to compare it with four currently used root-canal filling materials using a digital imaging system. Methods: The root-canal filling materials tested were MTA Fillapex, Adseal, AH Plus, Endomethasone and gutta-percha cones. Standard disks of five different root-canal filling materials were exposed together with an aluminum stepwedge calibrated in millimeters. For the radiographic exposures, a storage phosphor plate (size 4; 5.7x7.6 cm) and an x-ray machine at 70 kVp and 8 mA were used. The object-tofocus distance was 30 cm, and the exposure time was 0.2 sec. The grey values of the test materials were measured digitally using the system's own software and compared with the stepwedge to find the equivalent thickness of aluminum. The data were analyzed statistically with significance levels set at p<0.05. Results:The radiopacity values of the studied materials in decreasing order, expressed in millimeters of aluminum equivalent, were: AH Plus (9.70), gutta-percha (6.82), MTA Fillapex (5.30), Adseal (3.71) and Endomethasone (3.67). Statistically significant differences were found between mean radiographic density values of the tested materials (p<0.005), AH Plus showing the highest value.

Radiopacity evaluation of calcium silicate cements

“…The molecular weight and thickness of a material determine its radiopacity [ 16 , 17 ]. Eliasson and Haasken [ 18 ] were the first researchers to establish an equivalent aluminum thickness using optical radiographic density values as a standard of comparison of materials.…”

Evaluation Of Radiopacity of Nanoparticle Incorporated Root Canal Sealer with Epoxy Resin Incorporated Root Canal Sealers – An Invitro Study

“…; Email: shetty_aditya1@yahoo.co.in comparison in 1979 using optical radiography density measurements for imprint materials and an equivalent layer of aluminium that could provide a same radiographic density. [2]. Using an aluminium step wedge with 2mm intervals, Beyer-Olsen and Orstavik2 developed a repeatable comparison standard to assess root canal sealers in 1981 [3] .…”