title: [Scanning electron microscopic study on the use of traditional Chinese medical irrigant in ultrasonic root canal instrumentation].
abstract: OBJECTIVE
  To evaluate the cleaning ability of traditional Chinese medicine Jieeryin used as ultrasonic root canal irrigant.
  
  
  METHODS
  A total of 20 extracted human single-rooted teeth were divided into 4 groups: normal saline, 3.33% Jieeryin, 30% Jieeryin and 2.5% sodium hypochlorite. After ultrasonic root canal preparation a 15#-K type ultrasonic file was inserted into the root canal without contacting the root canal wall and the ultrasonic irrigation was kept for 10 seconds. The cleaning of the cervical, middle and apical thirds of the root canal walls was evaluated by scanning electron microscope. The data were analyzed statistically by ANOVA and Bonferroni test.
  
  
  RESULTS
  The cleaning ability of 30% Jieeryin was similar to that of 2.5% NaClO (P>0.05) in the cervical third, and it was significantly better than 3.33% Jieeryin (P<0.01) and normal saline (P<0.05). There was significant difference between the cervical third and the middle or apical thirds (P<0.01) of 30% Jieeryin. There was no significant difference between the four groups in the middle third (P>0.05). In the apical third, 2.5% NaClO was significantly better than normal saline (P>0.05). No significant difference was found between 3.33% Jieeryin and saline in all thirds.
  
  
  CONCLUSIONS
  Cleaning by 30% Jieeryin or 2.5% NaClO with ultrasonic technique was superior compared to the cleaning by 3.33% Jieeryin or normal saline in the cervical third.
authors.affiliation: Department of Oral Medicine, College of Stomatology, Shandong University, Jinan 250012, Shandong Province, China. wangqing@sdu.edu.cn
authors.forename: Qing
authors.initials: Q
authors.lastname: Wang
authors.forename: Shi-jiang
authors.initials: SJ
authors.lastname: Xiong
authors.forename: Xiu-juan
authors.initials: XJ
authors.lastname: Lin
authors.forename: Gui-xiang
authors.initials: GX
authors.lastname: Liu
mesh_terms: D003786:Dental Pulp Cavity; D006801:Humans; D008516:Medicine, Chinese Traditional; D008855:Microscopy, Electron, Scanning; D012388:Root Canal Irrigants / Q000627:therapeutic use*; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods*; D012390:Root Canal Therapy; D012973:Sodium Hypochlorite / Q000627:therapeutic use; D014464:Ultrasonic Therapy; D014465:Ultrasonics
chemical_list: D012388:Root Canal Irrigants; D012973:Sodium Hypochlorite