title: [In vitro evaluation of the sealing ability of an iodoform-calcium phosphorate cement root canal filler].
abstract: OBJECTIVE
  To evaluate the sealing ability of an injectable iodoform-calcium phosphate cement(CPC) root canal filler in vitro.
  
  
  METHODS
  Sixty-two single-rooted human extracted teeth were selected and root canals were instrumented to 40# with K file. Fifty-eight teeth were randomly divided into two experimental groups. The root canals were filled by lateral condensation of gutta-purcha with iodoform-CPC or zinc-oxide-eugenol-iodoform paste used as sealer respectively. Other four teeth were used as control. When the sealer was solidified, the apical portion of tooth was soaked into 2% methylene blue for 6 days. After the tooth was longitudinally sectioned, the dye length was measured for apical microleakage.The data obtained were analysed with group t test.
  
  
  RESULTS
  The average microleakage in iodoform-CPC group(8.400mm) was significantly larger than that in the control group(5.300mm), P=0.021.
  
  
  CONCLUSIONS
  We conclude that iodoform-CPC does not provide a sealing ability as good as zinc-oxide-eugenol-iodoform paste in vitro.
authors.affiliation: Department of Endodontics, School of Stomatology, Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai 200011, China.
authors.forename: Shan-fen
authors.initials: SF
authors.lastname: Ma
authors.forename: Jiong
authors.initials: J
authors.lastname: Chen
authors.forename: Ya-qin
authors.initials: YQ
authors.lastname: Zhu
mesh_terms: D002130:Calcium Phosphates / Q000737:chemistry*; D003763:Dental Leakage; D006801:Humans; D006847:Hydrocarbons, Iodinated / Q000737:chemistry*; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D015035:Zinc Oxide-Eugenol Cement / Q000737:chemistry
chemical_list: D002130:Calcium Phosphates; D006847:Hydrocarbons, Iodinated; D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C020243:calcium phosphate; C010473:iodoform