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A microleakage comparative study for indirect composite restorations on posterior teeth

A. POPOVICI1,* , C. NICOLA1, M. MOLDOVAN2, C. I. BONDOR1, C. BADET3, A. ROMAN1, G. BĂCIUŢ1, M. BĂCIUŢ1, S. BRAN1

Affiliation

  1. "Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
  2. Babeş-Bolyai University-”Raluca Ripan” Institute for Research in Chemistry, Cluj-Napoca, Romania
  3. “Victor Segalen” University, Faculty of Odontology, Bordeaux, France

Abstract

This study used a quantitative method to assess microleakage at the tooth–restoration interface in relation with the type of indirect resin-based composite used. Forty standardized class II cavities for inlays were prepared in 20 previously extracted, sound permanent third molars. Teeth were randomly divided into 2 groups (n=20) and restored with composite inlays using the Gradia (GC Corporation, Japan) and Barodent composite (Institute for Research in Chemistry, Romania). Composite inlays were prepared by the indirect technique; they were built up on models after cavity impressions according to the manufacturer’s instructions. All inlays were luted using self-adhesive dual cured resin cement (G-Cem/GC Corp). Microleakage testing was done by immersing the restored teeth in 2% methylene blue solution for 24 hours. Dye penetration at gingival and occlusal margin, along the tooth-cement interface was evaluated using an inverted microscope (Olympus KC301, Olympus America Inc.) at 40x magnification. Dye penetration values were recorded (µm) using QuickPhoto Micro 2.2 software (Olympus Inc) and data were subjected to statistical analysis. No significant differences regarding microleakage in dentin and enamel were observed between the analysed groups (p<0.05). Significant differences between the enamel and dentin interface was observed within the same group..

Keywords

Indirect composite resin, Inlays, Microleakage, Self-adhesive resin cement, Interface.

Submitted at: Dec. 19, 2008
Accepted at: April 28, 2009

Citation

A. POPOVICI, C. NICOLA, M. MOLDOVAN, C. I. BONDOR, C. BADET, A. ROMAN, G. BĂCIUŢ, M. BĂCIUŢ, S. BRAN, A microleakage comparative study for indirect composite restorations on posterior teeth, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 4, pp. 490-493 (2009)