Publication: Evaluation of the Radiopacity of Luting Cements by Digital Radiography
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ALTINTAŞ, SUBUTAY HAN
Yildirim, Tahsin
KAYIPMAZ, SAADETTİN
Usumez, Aslihan
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Abstract
Purpose The aim of this study was to evaluate the radiopacity of eight contemporary luting cements using direct digital radiography. Materials and Methods Ten specimens, (5 mm diameter, 1 mm high) were prepared for each material tested (RelyX ARC, RelyX U100, RelyX Unicem, Nexus 2, Nexus 3, Metacem, Breeze, Adhesor zinc phosphate). The specimens were stored in a moist chamber at 37 degrees C until completely set, then radiographed using a Kodak digital sensor and an aluminum step wedge with variable thicknesses (1 to 13 mm in 1-mm increments) used for reference. A Kodak 2100 intraoral X-ray unit was operated at 60 kV, 7 mA, and 0.20 seconds. According to international standards, the radiopacity of the specimens was compared with that of the aluminum step wedge using the equal-density area tool of the Kodak Dental Imaging software (ver. 6.7). Data were analyzed by ANOVA and Tukey-s test. Results Adhesor zinc phosphate cement showed the highest radiopacity of all materials and dentin. Breeze showed the lowest radiopacity (p 0.05). The radiopacities of Nexus 3 and RelyX Unicem were significantly higher than those of other resin cements and dentin (p < 0.05). Conclusions All materials showed radiopacity above the minimum recommended by the International Organization for Standardization and the American National Standards/American Dental Association. Breeze had less radiopacity than dentin.
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ALTINTAŞ S. H. , Yildirim T., KAYIPMAZ S., Usumez A., -Evaluation of the Radiopacity of Luting Cements by Digital Radiography-, JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY, cilt.22, ss.282-286, 2013