Journal of Conservative Dentistry
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Year : 2014  |  Volume : 17  |  Issue : 1  |  Page : 65-69

Comparative radiopacity of six current adhesive systems

1 Department of Restorative Dentistry, Cesmac University Center, Maceió, Alagoas, Brazil
2 Department of Oral Radiology, Cesmac University Center, Maceió, Alagoas, Brazil
3 Faculty of Dentistry, School of Dentistry, International Medical University, Kuala Lumpur, Malaysia

Correspondence Address:
Isabel Cristina Celerino de Moraes Porto
Department of Restorative Dentistry, Cesmac University Center, Rua Cônego Machado, 918, Farol, CEP: 57051 160, Maceió, Alagoas

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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0707.124151

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Background: The radiopacity of contemporary adhesive systems has been mentioned as the indication for replacement of restorations due to misinterpretation of radiographic images. Aims: This study aimed to evaluate the radiopacity of contemporary bonding agents and to compare their radiodensities with those of enamel and dentin. Methods and Materials: To measure the radiopacity, eight specimens were fabricated from Clearfil SE Bond (CF), Xeno V (XE), Adper SE Bond (ASE), Magic Bond (MB), Single Bond 2 (SB), Scotchbond Multipurpose (SM), and gutta-percha (positive control). The optical densities of enamel, dentin, the bonding agents, gutta-percha, and an aluminium (Al) step wedge were obtained from radiographic images using image analysis software. Statistical Analysis: The radiographic density data were analyzed statistically by analysis of variance and Tukey's test (α =0.05). Results: Significant differences were found between ASE and all other groups tested and between XE and CF. No statistical difference was observed between the radiodensity of 1 mm of Al and 1 mm of dentin, between 2 mm of Al and enamel, and between 5 mm of Al and gutta-percha. Five of the six adhesive resins had radiopacity values that fell below the value for dentin, whereas the radiopacity of ASE adhesive was greater than that of dentin but below that of enamel. Conclusion: This investigation demonstrates that only ASE presented a radiopacity within the values of dentin and enamel. CF, XE, MB, SB, and SM adhesives are all radiolucent and require alterations to their composition to facilitate their detection by means of radiographic images.

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