Evaluation of the effectiveness of different irrigation activation methods in removing calcium hydroxide from root canals

OpenAlex İngilizce

Purpose: The aim was to evaluate the effectiveness of different irrigation activation methods in removing calcium hydroxide (Ca(OH) 2 ) from two different root canal isthmuses (apical and middle levels) created using three-dimensional (3D) modelling. Methods:In this in vitro study, 150 acrylic blocks were divided into 10 groups (n=15).Models fabricated and filled with pure injectable Ca(OH) 2 paste (UltraCal XS, Ultradent, South Jordan, UT).Five irrigation activation groups were established (conventional needle irrigation (CNI), EDDY activation, passive ultrasonic activation, XP Endo Finisher activation and Er,Cr:YSGG laser activation).The amount of residual Ca(OH) 2 in the root canal isthmus was evaluated with a stereomicroscope at ×10 magnification.All procedures were performed by a single operator.The area containing Ca(OH) 2 was subtracted from the total area measurement and the cleaning percentage and area calculation were made using the Image J program.The obtained data were recorded in the Microsoft Excel program, and IBM SPSS v29 package program was used for analysis and visualization of the data.Results: Er,Cr:YSGG laser showed significantly lower amount of Ca(OH) 2 remnants compared to other methods (p<0.001).In the apical isthmus region, EDDY was the least effective method, while in the middle isthmus region, the CNI method was the least effective.Conclusion: Er,Cr:YSGG laser-activated irrigation technique demonstrated superior efficacy in the removal of Ca(OH) 2 from root canal isthmus regions than other activation methods.3D modelling enabled the comparison of irrigation activation methods in a standardized manner.