TODENTJ-25-03-2019_TODENTJ-5-33 1553505236 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 3 16 2011 5 1 Kumbuloglu Ovul Tezvergil-Mutluay Arzu Saracoglu Ahmet Lassila Lippo VJ Vallittu Pekka K Aim: This study evaluated in vitro microleakage of inlays made by direct or indirect techique with or without fiber reinforced composite (FRC) substructure. Materials and Methods: Standardized mesio-occlusal cavities were prepared and restored using direct-technique with composite resin only or FRC-composite resin, and indirect technique with laboratory composite only or FRC-laboratory composite resin. After thermocycling, teeth were immersed in basic fuchsin dye, sectioned and examined under a stereo-microscope (x40). Results: No differences of cement thickness and dye penetration were found in gingival area (p>0.05), whereas microleakage revealed statistical differences between groups (p=0.02) in occlusal area, where FRC-groups had lower microleakage than composite restorations. Thickness of cement layer did not show significant difference between groups with indirect technique (p>0.05). Conclusion: The present study suggests that insertion of FRC substructure to the inlay cavity by direct composite filling technique does not increase the marginal leakage compared to that of cementing indirectly made restotorations by composite resin luting cement. Clinical Significance: On the basis of the results of this in vitro study, the use of direct FRC technique might be an effective way to decrease the marginal leakage. 3 16 2011 33 38 TODENTJ-5-33 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2010-8-28 2010-11-25 2010-12-28 2011-3-16 http://creativecommons.org/licenses/by/3.0/ 10.2174/1874210601105010033 1553505236 https://opendentistryjournal.com/VOLUME/5/PAGE/33/ https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.pdf https://opendentistryjournal.com/contents/volumes/V5/TODENTJ-5-33/TODENTJ-5-33.xml Am J Dent Göhring TN 15 35 2002 Göhring TN, Schmidlin PR, Lutzt F. 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