title: [Clinical study on prevention root absorption after teeth replantation with Vitapex paste].
abstract: OBJECTIVE
  To evaluate the result of using Vitapex paste for preventing root absorption after replanting the avulsed teeth.
  
  
  METHODS
  Thirty patients with 36 avulsed upper anterior teeth with fully developed apices within 5 hours of trauma were enrolled in this study. For each case, the tooth and its alveolar site were irrigated with 0.9%NaCl, then the tooth was put into its original site and fixed with steel wires and composite resin. Two weeks later,the involved teeth underwent pulpectomy and were randomly divided into two groups. Ca(OH)₂ paste was used for temporary root canal filling in group A, and Vitapex paste in group B. The patients were asked to recall every three months, X-ray film was taken to evaluate root absorption and the same temporary root canal filling material was replaced. The permanent root canal filling was performed about one and a half years after treatment when root absorption stopped. Statistical analysis was carried out using SPSS12.0 software package.
  
  
  RESULTS
  The success rate of two groups was not significantly different, though which was a little higher one year after treatment in group A than group B (88.9% vs. 83.3%). Vitapex paste had the benefits of both Ca(OH)₂ and iodoform. The radiopaque of iodoform made Vitapex paste observed easily for the status of filling or absorption.
  
  
  CONCLUSIONS
  The injection style of Vitapex paste makes it easily being manipulated. Vitapex paste is an ideal material for preventing root absorption of replanted avulsed teeth. Supported by Research Fund of Science and Technology Commission of Shanghai Municipality (Grant No. 08DZ2271100).
authors.affiliation: Department of General Dentistry, College of Stomatology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, China. hanjunli@sina.com
authors.forename: Jun-li
authors.initials: JL
authors.lastname: Han
authors.forename: Hong
authors.initials: H
authors.lastname: He
authors.forename: Zhen
authors.initials: Z
authors.lastname: Xu
authors.forename: Tuo
authors.initials: T
authors.lastname: Gu
authors.forename: Lu-dong
authors.initials: LD
authors.lastname: Zhang
authors.forename: Ya-qin
authors.initials: YQ
authors.lastname: Zhu
mesh_terms: D002126:Calcium Hydroxide; D004338:Drug Combinations; D006801:Humans; D009824:Ointments; D012092:Replantation; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D012828:Silicones
chemical_list: D004338:Drug Combinations; D009824:Ointments; D012387:Root Canal Filling Materials; D012828:Silicones; C029584:calcium hydroxide, iodoform, silicone oil drug combination; D002126:Calcium Hydroxide