Effect of resin coating and chlorhexidine on microleakage of two resin cements after storage

• Published in: Journal of dentistry (Tehran, Iran) Iran), 2010, Vol.7 (1), p.31-40
• Main Authors: Shafie, F, Doozandeh, M, Alavi, A
• Format: Article
• Language: English
• Subjects: Original
• ISSN: 1735-2150; 2008-2185

Evaluating the effect of resin coating and chlorhexidine on microleakage of two resin cements after water storage. Standardized class V cavities were prepared on facial and lingual surfaces of one hundred twenty intact human molars with gingival margins placed 1 mm below the cemento-enamel junction. Indirect composite inlays were fabricated and the specimens were randomly assigned into 6 groups. In Groups 1 to 4, inlays were cemented with Panavia F2.0 cement. G1: according to the manufacturer's instruction. G2: with light cured resin on the ED primer. G3: chlorhexidine application before priming. G4: with chlorhexidine application before priming and light cured resin on primer. G5: inlays were cemented with Nexus 2 resin cement. G6: chlorhexidine application after etching. Each group was divided into two subgroups based on the 24-hour and 6-month water storage time. After preparation for microleakage test, the teeth were sectioned and evaluated at both margins under a 20× stereomicroscope. Dye penetration was scored using 0-3 criteria. The data was analyzed using Kruskal-Wallis and complementary Dunn tests. There was significantly less leakage in G2 and G4 than the Panavia F2.0 control group at gingival margins after 6 months (P