title: [Comparative study of resosolv and chloroform in retreatment of canal obturated with resinifying agent].
abstract: OBJECTIVE
  To evaluate the possibility for removal of resinifying agent, time required for removal and the working length loss by Resosolv or Chloroform.
  
  
  METHODS
  40 human teeth (80 root canals) obturated with FR phenolaldehyde agent were divided into four groups, 20 root canals per group. Group A: Resosolv with K file; group B: chloroform with K file; group C: Resosolv with Ultrasonic K file; group D: Chloroform with ultrasonic K file. Calculating the pereentage for removal of resinifying agent, time required for removal and the working length loss.
  
  
  RESULTS
  The effectiveness of Resosolv for removing resinifying agent was better than chloroform. 87.5% of canals could be negotiated by Resosolv; 45% of canals be negotiated by chloroform.
  
  
  CONCLUSIONS
  Resosolv is an effective solvent for canals obturated with resinifying agent.
authors.affiliation: Special Department, School of Stomatology, Peking University, Beijing 100081, China.
authors.forename: Bing-zhen
authors.initials: BZ
authors.lastname: He
authors.forename: Cheng-fei
authors.initials: CF
authors.lastname: Zhang
authors.forename: Rui-yu
authors.initials: RY
authors.lastname: Ding
authors.forename: Qiong-guang
authors.initials: QG
authors.lastname: Lin
mesh_terms: D002725:Chloroform / Q000737:chemistry*; D006801:Humans; D019233:Retreatment; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012389:Root Canal Obturation / Q000379:methods; D012997:Solvents / Q000737:chemistry*
chemical_list: D012387:Root Canal Filling Materials; D012997:Solvents; D002725:Chloroform