title: Effect of Using Electric Current during Dentin Bonding Agent Application on Microleakage under Simulated Pulpal Pressure Condition.
abstract: BACKGROUND
  The use of electric current during application of etch-and-rinse adhesive systems has been recently introduced to decrease microleakage. This study investigated the effects of an electric field produced by an experimental device for the application of a two-step etch-and-rinse adhesive on moist dentin surface.
  
  
  METHODS
  Sixty freshly extracted human premolars were used for this study. In order to simulate real conditions, the pulpal pressure was set to 35 cm H(2)O for all the specimens. The teeth were divided into two groups: in group I, etch-and-rinse system (Single Bond) was applied with electric current while group II, etch-and-rinse system (Single Bond) was applied without electric current. Specimens were prepared for dye penetration test. The data were analyzed using Mann-Whitney U test.
  
  
  RESULTS
  The results showed that group I had less microleakage scores compared to group II (P = 0.047).
  
  
  CONCLUSIONS
  Based on the result of this study, it could be concluded that using electric current for applying adhesive systems had a significant effect on reducing microleakage.
authors: Assistant Professor, Department of Operative and Esthetic Dentistry, School of Dentistry, Jundishapour University of Medical sciences, Ahwaz, Iran.
authors: Naghmeh
authors: N
authors: Gharizadeh
authors: Azita
authors: A
authors: Kaviani
authors: Samaneh
authors: S
authors: Nik