Marginal Adaptation and Microleakeage of Directly and Indirectly Made Fiber Reinforced Composite Inlays

Kumbuloglu Ovul

doi:10.2174/1874210601105010033

Abstract

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.

Highlights

Fixed partial dentures (FPD) of various kinds have been available as a prosthodontic treatment option
Metal free inlay retained FPDs can be made with durable zirconia or fiber-reinforced composite (FRC) framework [7]
Groups had significant differences with regard to microleakage (p=0.02), where FRCgroups had a tendency for lower microleakage than composite restorations

Summary

Introduction

Fixed partial dentures (FPD) of various kinds have been available as a prosthodontic treatment option. Introduction of metal-free restorative materials has led to the use of ceramic and composite FPDs as an alternative to conventional porcelain-fused-to-metal restorations. An inlay retained metal-free FPD may be feasible option in an esthetic tooth replacement with a minimally invasive reduction of abutment teeth [1,2,3,4,5,6]. Metal free inlay retained FPDs can be made with durable zirconia or fiber-reinforced composite (FRC) framework [7]. An inlay retained FPD can be made by direct technique, i.e. directly in patients mouth. They show promising early clinical outcome [13,14] Both directly and in indirectly made FRC

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Conclusion