Penetration Depth of Dye-Marker Into Dentine Using Different Irrigation Techniques

Methods: Thirty-two freshly extracted lower premolars were enlarged to size F3 with ProTaper rotary system. Roots were randomly divided into three groups (n=10) and two were separated for control. 2.6% NaOCl + acid-fuchsin mixture was used as the final irrigant. Group I: RinsEndo-system; 1-mL NaOCl, 1 min; group II: flushing with Ultradent Endo-Irrigator tips (27 gauge); 1-mL NaOCl, 1 min; group III: flushing with dental syringe (27 gauge); 1-mL NaOCl, 1 min. Teeth were de-coronated and roots were sectioned into three equal parts from their apices. Two observers measured the penetration depth of dye into dentine using stereomicroscope. Data were statistically analyzed (ANOVA, Scheffe’s test, p<0.05). 

Results: Although, greater dye penetration depth into the dentinal tubules was achieved when employing RinsEndo-system, no statistically difference observed between all techniques (p>0.05). 

Conclusions: RinsEndo-system exhibited betterment over conventional methods in terms of dentine penetration of dye marker.