Removal of calcium hydroxide from root canals by different methods:an in vitro study
SONG Ying
WANG Ru-yan
ZOU Ling
GAO Yuan
Abstract：AIM:To compare the efficacy of different techniques in the removal of calcium hydroxide〔Ca (OH)2〕in straight and curved root canals.METHODS:The straight and curved root canal models were established using extracted tooth roots.K file,ultrasonic and EndoActivator were respectively used for the removal of Ca(OH)2 (n=10).The residual Ca(OH)2 was observed by stereomicroscope,the percentage of residual Ca(OH)2 was analyzed and calculated using the photographs taken by camera attached to stereomicroscope.RESULTS:In straight root canal models,the Ca(OH)2 removal efficacy was in the following order:EndoActivator≈P5 ≈asmall K file >irrigation;while in curved root canal models,EndoActivator≈precurved P5 >P >pre-curved small K file>small K file>irriga-tion.The percentage of residual Ca(OH)2 in the curved canals was higher than that in straight canals (P<0.05 ). CONCLUSION:EndoActivaor is the most effective for Ca(OH)2 removal.But none of methods used can completely remove Ca(OH)2 in root canal.
Keywords：calcium hydroxidestraight root canalscurved root canalsultrasonicEndoActivator
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 407-410 )