AU - Tabari, Mitra AU - Esmaeili, Behnaz AU - Alimohammadi, Mona AU - Poorsattar Bejeh Mir, Arash AU - Gharekhani, Samane AU - Hajiahmadi, Mahmood AU - Mollaei, Mobina TI - Comparative evaluation of microleakage of composite restorations using fifth and seventh generations of adhesive systems PT - JOURNAL ARTICLE TA - Caspian-J-Dent-Res JN - Caspian-J-Dent-Res VO - 3 VI - 2 IP - 2 4099 - http://cjdr.ir/article-1-118-en.html 4100 - http://cjdr.ir/article-1-118-en.pdf SO - Caspian-J-Dent-Res 2 ABĀ  - Introduction: Simultaneous etching of enamel and dentin using the novel generation of adhesive systems with contracted operational steps, has shown a good clinical efficacy. The aim of this study was to evaluate the microleakage of composite restorations using the V and VII generations of adhesive systems on primary teeth. Methods: This study was performed on 45 human intact extracted primary teeth. Following class V cavity preparation, the samples were randomly divided into three groups included 15 teeth based on the type of bonding agent Single Bond 2, Clearfil S3 Bond or G Bond. After applying the bonding agents, the teeth filled with composite Z250. The microleakage values of incisal and gingival margins were separately scored by 2% basic fuchsine staining based on a 0-3 ordinal ranking system. The data were analyzed by using Kruskal Wallis and Mann_whitney U tests. Results: In overall, the score of microleakage at incisal (0.58±0.94) and gingival (1.06±0.19) edges did not have significant difference. Also, there was no significant difference between incisal and gingival microleakage considering the different types of bonding. Conclusion: Regarding to less operational steps and lower risk of salivary contamination, the VII generation of dentin bonding agents can be applied for filling the class V cavities of primary teeth. CP - IRAN IN - School of Dentistry, Mashhad University of Medical Sciences, Mashhad-Iran. LG - eng PB - Caspian-J-Dent-Res PG - 14 PT - Research Paper YR - 2014