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KMID : 1004520130290040377
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Journal of Dental Rehabilitation and Applied Science
2013 Volume.29 No. 4 p.377 ~ p.383
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Evaluation of the Radiopacity of Contemporary Luting Cements by Digital Radiography
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An Seo-Young
Lee Du-Hyeong
Lee Kyu-Bok
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Abstract
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This study examined the radiopacity of eight contemporary luting cements by direct digital radiography. Five discshaped
specimens (5 mm × 1 mm) were prepared for each material tested (BisCem, Clearfil SA Luting, Duolink,
Maxcem Elite, Multilink Speed, Panavia F 2.0, RelyX Unicem Clicker, V-link). The specimens were radiographed using
a Kodak CS 7600 image plate (Carestream Health, Inc., Rochester, NY, USA) and an aluminum step wedge with a range
of thicknesses (1.5 to 16.5 mm in 1.5 mm increments) and a 1 mm tooth used as a reference. A dental X-ray machine
Kodak 2200 Intraoral X-ray System (Carestream Health, Inc., Rochester, NY, USA), operating at 70 kVp, 4 mA, 0.156 s
and a source-to-sample distance of 30 cm, was used. According to international standards, the radiopacity of the
specimens was compared with that of an aluminum step wedge using NIH ImageJ software (available at http://rsb.info.nih.gov/ij/).The data was analyzed by ANOVA and a Tukey’s post hoc test. Maxcem Elite (5.66) showed
the highest radiopacity of all materials, followed in order by Multilink Speed (3.87) and V-link (2.83). The radiopacity of
Clearfil SA Luting (1.35), BisCem (1.33), Panavia F 2.0 (1.29) and Duolink (1.10) were between enamel (1.79) and dentin (0.19). RelyX Unicem Clicker (0.71) showed the lowest radiopacity, which was higher than that of dentin. All materials showed a radiopacity above the minimum recommended by the International Organization for Standardization and the American National Standards/American Dental Association with the exception of RelyX Unicem Clicker.
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KEYWORD
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Digital radiography, Luting cement, Radiopacity
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