title: Relationship between sealing ability of Activ GP and Gutta Flow and methods of calcium hydroxide removal.
abstract: OBJECTIVE
  To evaluate the effect of method of calcium hydroxide intracanal dressing removal, on sealing ability of Gutta Flow and Activ GP.
  
  
  METHODS
  Seventy extracted mandibular premolars were sectioned at CEJ and canals were prepared with profile 4% rotary file till #40. Canals were filled with calcium hydroxide, coronally sealed with Cavit G and stored at 37°C. After 7 days, samples were divided on the basis of calcium hydroxide removal method (Master apical file, Navi Tip FX, and F File) and obturating material (Activ GP and Gutta Flow). Three coats of nail polish were applied except 2 mm around apical foramen and samples were immersed in India ink dye, sectioned, and observed under stereomicroscope for microleakage.
  
  
  RESULTS
  The results were statistically analyzed with one way ANOVA-F with Tukey HSD test with the null hypothesis set as 5%.
  
  
  CONCLUSIONS
  The seal of the canal system was adversely impacted by residual calcium hydroxide when Activ GP and Gutta Flow were used as obturating material and the sealing ability of Activ GP and Gutta Flow was better when MAF was used for removal of calcium hydroxide than F file or Navi tip FX.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Subharti Dental College, Meerut, India.
authors.forename: Vineeta
authors.initials: V
authors.lastname: Nikhil
authors.forename: Vijay
authors.initials: V
authors.lastname: Singh
authors.forename: Simranjeet
authors.initials: S
authors.lastname: Singh