microleakage evaluation of silorane-based composite and methacrylate-based composite in class ii box preparations using two different layering techniques: an in vitro study
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2013
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Abstract
Aim: The aim of this study was to compare the microleakage in Class II box preparations with the gingival margin above and below the cemento-enamel junction (CEJ) restored with Silorane composite and methacrylate composite using two different layering techniques.
Materials and Methods: Standardized box preparations (mesial box 1 mm above the CEJ and distal box 1 mm below the CEJ) were prepared in 60 upper premolars. The teeth were randomly divided into four groups containing 15 samples each; Group I: Restored with a Silorane composite using an oblique layering technique, Group II: Restored with Silorane composite using a vertical layering technique, Group III: Restored with methacrylate composite using the oblique layering technique, and Group IV: Restored with methacrylate composite using the vertical layering technique. The samples were stored in distilled water, followed by thermocycling and immersed in 2% methylene blue. The samples were sectioned and evaluated for microleakage at the gingival margin.
Statistical Analysis: Kruskal-Wallis, Fischer exact test, Wilicoxon test, and Mann-Whitney U test.
Results: Silorane composite had significantly lesser microleakage. No significant difference in microleakage was observed above and below the CEJ for Silorane-based composite.
Conclusion: Silorane composite resin showed lesser microleakage compared to methacrylate composite resin.
Clinical Significance: The Silorane-based composites improve the marginal adaptation due to their reduced shrinkage, thereby decreasing the residual stress at the adhesive-tooth interface.
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joseph2013indianmicroleakage
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| Authors | ;Asha Joseph;Lekha Santhosh;Jayshree Hegde;Srinivas Panchajanya;Reshmi George |
| Journal | Applied and environmental microbiology |
| Year | 2013 |
| DOI |
10.4103/0970-9290.114943
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