title: Efficacy of XP-endo Finisher File in Removing Calcium Hydroxide from Simulated Internal Resorption Cavity.
abstract: BACKGROUND
  The aim of this study was to evaluate the effect of supplementary use of XP-endo Finisher file, passive ultrasonic activation (PUI), EndoActivator (EA), and CanalBrush (CB) on the removal of calcium hydroxide (CH) paste from simulated internal resorption cavities.
  
  
  METHODS
  The root canals of 110 extracted single-rooted teeth with straight canals were prepared up to size 50. The specimens were split longitudinally, and standardized internal resorption cavities were prepared with burs. The cavities and root canals were filled with CH paste. The specimens were divided into 5 groups as follows: XP-endo Finisher, EA, PUI, CB, and syringe irrigation (SI). The root canals were irrigated with 5.25% NaOCl and 17% EDTA for 2 minutes, respectively. Apart from the SI group, both solutions were activated by using tested techniques for 1 minute. The quantity of CH remnants on resorption cavities was scored. Data were analyzed by using Kruskal-Wallis H and Mann-Whitney U tests.
  
  
  RESULTS
  XP-endo Finisher and PUI removed significantly more CH than SI, EA, and CB (P < .05), showing no significant difference between them (P > .05). Differences among SI, EA, and CB were also non-significant (P > .05).
  
  
  CONCLUSIONS
  None of the tested techniques render the simulated internal resorption cavities free of CH debris. XP-endo Finisher and PUI were superior to SI, CB, and EA.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University, Samsun, Turkey. Electronic address: canglkarabulut@gmail.com.
authors.forename: Cangül
authors.initials: C
authors.lastname: Keskin
authors.affiliation: Department of Endodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey.
authors.forename: Evren
authors.initials: E
authors.lastname: Sariyilmaz
authors.affiliation: Ordu Oral Health Clinics, Ordu, Turkey.
authors.forename: Öznur
authors.initials: Ö
authors.lastname: Sariyilmaz
mesh_terms: D002126:Calcium Hydroxide / Q000627:therapeutic use*; D003762:Dental Instruments; D006801:Humans; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods; D012391:Root Resorption / Q000628:therapy*
chemical_list: D002126:Calcium Hydroxide
keywords: Calcium hydroxide; CanalBrush; EndoActivator; XP-endo Finisher; passive ultrasonic activation