پديد آورندگان :
Kermanshah، Hamid نويسنده , , Yassini، Esmaeil نويسنده Restorative Dentistry Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran , , Hoseinifar ، Razie نويسنده Member of Dental Diseases Research Center and Assistant Professor, Department of Operative Dentistry, School of Dentistry, Kerman University of Medic , , Mirzaei، Mansoreh نويسنده Assistant Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran , , Pahlavan ، Ayub نويسنده Associate Professor, Department of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran , , Hasani Tabatabaie ، Masomeh نويسنده Associate Professor, Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Science. Tehran, , , Arami، Sakineh نويسنده Assistant Professor, Department of Restorative Dentistry, School of Dentistry, Tehran University of Medical Sciences. Tehran, Iran ,
چكيده لاتين :
Abstract
Background and Aim: Determining the best restorative material to decrease microlea-kage in class V restorations is of great importance in operative dentistry. The aim of this in-vitro study was to evaluate the microleakage of silorane-based composites compared to low shrinkage methacrylate-based composites in class V restorations.
Materials and Methods: In this in vitro study, class V cavities were prepared on the buc-cal and lingual surfaces of 24 human premolars and molars (48 cavities). The specimens were divided into four groups of 6(12 cavities) as follows: group 1 (LS System Adhesive, Primer & Bond + Filtek P90), group 2 (Kalore-GC+ Clearfil SE bond), group 3 (Clearfil SE bond + Grandio) and group4 (Clearfil SE bond + Aelite LS Posterior). All the specimens were thermocycled for 2000 cycles (5-50oC).
The teeth were then immersed in 0.5% basic fuchsin dye for 24 hours at 370C, sectioned and observed under stereomicroscope. Data were analyzed using Kruskal-Wallis and Wil-coxon tests at a P < 0.05 level of significance.
Results: There were no significant differences in microleakage among the four groups at the occlusal margin (P > 0.05). But, there were statistically significant differences in micro-leakage between Silorane and Aelite at the gingival margin (P < 0.05).
Statistically significant differences were also found in microleakage between occlusal and gingival margins (except for Kalore and Silorane) (P > 0.05).
Conclusion: Silorane was not superior to the conventional low shrinkage methacrylate-based composites except for Aelite in terms of microleakage.
Key Words: Composite resins , methacrylate , microleakage
