Evaluation Of The Amount Of Calcium Hydroxide Intracanal Medicament Extrusion During Its Removal With Combination Of Master Apical File And Different Agitation Techniques

Abstract

Aim: The study's objective was to determine the quantity of calcium hydroxide (Ca(OH)2) extrusions during its removals using a master apical file with two agitation techniques, sonic and ultrasonic, set 1 mm short of the apex or at working length.

Materials & Methods:  ProTaper Next rotary system up to X3 was used to prepare 120 straight root canals of human incisors. The Ca(OH)₂ mixed with methylene blue were then added to the canals to assist display. By considering the master apical file (X3), the Ca(OH)2 was cleaned. Next, the teeth were separated into 2 groups—sonic and ultrasonic—and 2 subgroups—at working length and 1 mm short of working length—according to the agitation system and the root length level at which they were utilized, respectively.The apically extruded material was gathered in Eppendorf tubes throughout processing. The mass of the empty tubes was then subtracted from the weight of the tubes carrying the material to calculate the related amount of extruded Ca(OH)₂. The results were statistically analyzed by considering the one-way ANOVA and Tukey's post hoc test. (P<0.05)

Results: The highest extrusion seen with ultrasonic agitation technique used at  working length (0.04±0.02)g  while least  extrusion seen with sonic agitation technique used at working length (0.02±0.02) with statistical significant difference(P=0.001) between them.

Conclusion: The ultrasonic agitation technique at working length cause moreCa(OH)₂intracanal medicament extrusion during its removal than sonic agitation. At 1mm short of the apex both sonic and ultrasonic device showed almost same amount of extrusion.