A comparison of apical sealing and extrusion between Thermafil and Lateral condensation techniques

Abstract

One hundred Thirty two canals from 66 mesial roots of extracted humanmandibular molars were instrumented with Protaper and K-file crown-down techniqueand divided into two groups. The group I was obturated with Thermafil technique andgroup II was obturated with lateral condensation technique. Topseal sealer was usedin both groups. Apical extrusion, apical microleakage, time for instrumentation andtime for obturation were recorded in each sub group. Six molars were used as controlteeth. All specimens were stored in 100% humidity for 1 week, coated with nailpolish, except for the apical 2mm, and were suspended in methylene blue dye for 72h.Linear dye leakage was statistically different (ANOVA) test, while apical extrusionbetween techniques was not statistically different (Chi-square test).