Table of Contents
ISRN Dentistry
Volume 2012, Article ID 204813, 8 pages
http://dx.doi.org/10.5402/2012/204813
Research Article

Marginal Sealing Durability of Two Contemporary Self-Etch Adhesives

1Dental Materials Research Center and Department of Operative Dentistry, School of Dentistry, Isfahan University of Medical Sciences, Hezar Jerib Street, Isfahan 81746-73461, Iran
2Torabinejad Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Hezar Jerib Street, Isfahan 81746-73461, Iran
3Department of Pediatric Dentistry, Tehran University of Medical Sciences, Tehran 14399-55991, Iran

Received 21 December 2011; Accepted 29 January 2012

Academic Editors: Y. Abe, A. CarlΓ©n, G. Gambarini, and A. Vissink

Copyright Β© 2012 Maryam Khoroushi and Mahsa Mansoori. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction. Sealing abilities of two self-etch adhesives were evaluated after two aging processes: storage in water and thermocycling. Materials and Methods. Cl V cavities were prepared on the buccal and lingual aspects of 48 human premolars, with cervical margins 1 mm below the CEJ. Clearfil Protect Bond (CPB) and BeautiBond (BB) (two-step and one-step self-etch adhesives, resp.) were applied, each to half of the cavities and restored with composite resin. Each group was randomly subdivided into 4 subgroups ( 𝑛 = 1 2 ) and evaluated for dye penetration after 24 hours, after 3000 thermocycling rounds, after a 6-month water storage, and after 3000 thermocycling rounds plus 6-month water storage, respectively. Data was analyzed using SPSS 11.5 and Kruskal-Wallis and Mann-Whitney π‘ˆ tests ( 𝛼 = 0 . 0 5 ). Results. There were no significant differences in enamel and dentin microleakage between the adhesives ( 𝑃 = 0 . 6 8 3 ; 𝑃 = 0 . 1 5 4 ). Furthermore, no significant differences were observed in enamel microleakage of each one of CPB and BB ( 𝑃 = 0 . 0 6 1 and 𝑃 = 0 . 3 1 8 , resp.). However, significant decrease was observed in subgroups 3 and 4 ( 𝑃 = 0 . 0 0 1 ) for CPB dentinal margins. Conclusion. In this study, limited aging procedures had no influence on marginal integrity of composite resin restorations bonded with self-etch adhesives of CPB and BB. Furthermore, CPB dentinal sealing improved after aging.