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VOLUME 14 , ISSUE 4 ( July-August, 2013 ) > List of Articles

RESEARCH ARTICLE

Gingival Microleakage of Class V Composite Restorations with Fiber Inserts

Walaa Ahmed, Wafa El-Badrawy, Gajanan Kulkarni, Anuradha Prakki, Omar El-Mowafy

Citation Information : Ahmed W, El-Badrawy W, Kulkarni G, Prakki A, El-Mowafy O. Gingival Microleakage of Class V Composite Restorations with Fiber Inserts. J Contemp Dent Pract 2013; 14 (4):622-628.

DOI: 10.5005/jp-journals-10024-1375

Published Online: 01-08-2013

Copyright Statement:  Copyright © 2013; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

This study investigated the effect of different fiber inserts (glass and polyethylene), bonding agents, and resin composites on the gingival margin microleakage of class V composite restorations.

Materials and methods

Sixty premolars were sterilized and mounted in acrylic resin bases. Class V cavities were prepared buccally and lingually, 1 mm below the cementoenamel junction, comprising 12 groups (n = 10). In the experimental groups fiber inserts were cut and placed at the gingival seat, while the control groups had no inserts. Combinations of two composite materials, Filtek-Z250 and Filtek-LS (3M-ESPE), and four bonding agents, Clearfil SE bond (Kuraray) (C), Scotch Bond Multipurpose (3M-ESPE) (SB), Prime and Bond NT (Dentsply) (PB), and Filtek-LS (3M-ESPE) (LS) were used. Restorations were incrementally inserted and polymerized for 40s. Specimens were then stored in distilled water for 7 days and thermocycled for 500 cycles. Teeth surfaces were sealed with nail polish except for 1 mm around restoration margins and immersed in 2% red procion dye. Teeth were then sectioned buccolingually and dye penetration was assessed with five-point scale. Data were statistically-analyzed by Kruskal-Wallis, ANOVA and Tukey's tests (α = 5%).

Results

Mean microleakage scores varied from 0.40 (Groups C, C with polyethylene, LS, LS with polyethylene) to 1.50 (SB).

Conclusion

Different bonding agents led to differences in microleakage scores where C and LS showed significantly lower microleakage than PB. SB had highest mean microleakage score, however, incorporation of fibers resulted in significant reduction in microleakage.

Clinical significance

Class V resin composite restorations bonded with a total-etch adhesive had a significant reduction in mean microleakage scores when glass or polyethylene fibers were placed at the gingival cavo-surface margin. In contrast, for two self-etch adhesive systems, the incorporation of fibers had no significant effect on mean microleakage scores.

How to cite this article

Ahmed W, El-Badrawy W, Kulkarni G, Prakki A, El-Mowafy O. Gingival Microleakage of Class V Composite Restorations with Fiber Inserts. J Contemp Dent Pract 2013;14(4):622-628.


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