title: Effectiveness of a new canal brushing technique in removing calcium hydroxide from the root canal system: A scanning electron microscope study.
abstract: OBJECTIVE
  To evaluate the effectiveness of Canal Brush technique removal Ca(OH)(2) from the root canal system using Scanning Electron Microscope (SEM).
  
  
  METHODS
  Eighteen teeth were instrumented up to #40 and dressed with Ca(OH)(2). Ca(OH)(2) was removed with master apical file (MAF) (Group 1, n:6) and CanalBrush technique (Group 2, n:6). Six teeth served as positive and negative controls. The roots were splited in the buccolingual direction and prepared for SEM examination. Two examiners evaluated the wall cleanliness then statistical analysis was performed by Mann-Whitney U and Friedman tests.
  
  
  RESULTS
  Differences in cleanliness were observed between Group 1 and Group 2 in the apical thirds (P=0.002). In the coronal and middle thirds, there were no differences between the two groups.
  
  
  CONCLUSIONS
  It is essential to re-instrument the root canal walls using instrumentation techniques while irrigating with NaOCl and EDTA combination. The Canal Brush technique results in the packing effect of the Ca(OH)(2) through to the apex.
authors.affiliation: Department of Endodontics, Hacettepe University, Faculty of Dentistry, Sihhiye Ankara, Turkey.
authors.forename: Melahat
authors.initials: M
authors.lastname: Gorduysus
authors.forename: Zeliha
authors.initials: Z
authors.lastname: Yilmaz
authors.forename: Omer
authors.initials: O
authors.lastname: Gorduysus
authors.forename: Burcu
authors.initials: B
authors.lastname: Atila
authors.forename: Senem Oransal
authors.initials: SO
authors.lastname: Karapinar
keywords: Calcium hydroxide removal; canalbrush technique; intracanal medicament; irrigation; root canal treatment