title: A comparative evaluation of microleakage of three different newer direct composite resins using a self etching primer in class V cavities: An in vitro study.
abstract: OBJECTIVE
  The aim of this in vitro study is to study, measure and compare the microleakage in three different newer direct composite resins using a self-etch adhesive bonding system in class V cavities by fluorescent dye penetration technique.
  
  
  METHODS
  Class V cavities were prepared on 45 human maxillary premolar teeth. On all specimens, one coat of G-Bond (GC Japan) applied and light cured. Teeth are then equally divided into 3 groups of 15 samples each. Filtek Z350 (3M ESPE), Ceram X duo (Dentsply Asia) and Synergy D6 (Coltene/Whaledent) resin composites were placed on samples of Groups I, II and III, respectively, in increments and light cured. After polishing the restorations, the specimens were suspended in Rhodamine 6G fluorescent dye for 48 h. The teeth were then sectioned longitudinally and observed for the extent of microleakage under the florescent microscope.
  
  
  METHODS
  The results were subjected to statistical analysis using Kruskal Wallis and Mann-Whitney U Test.
  
  
  RESULTS
  Results showed no statistically significant difference among three groups tested.
  
  
  CONCLUSIONS
  None of the materials tested was able to completely eliminate the microleakage in class V cavities.
authors.affiliation: Department of Conservative and Endodontics, A. B. Shetty Memorial Institute of Dental Sciences, India.
authors.forename: Mithra N
authors.initials: MN
authors.lastname: Hegde
authors.forename: Pallavi
authors.initials: P
authors.lastname: Vyapaka
authors.forename: Shishir
authors.initials: S
authors.lastname: Shetty