title: [Evaluation of sealing ability of three kinds endodontic materials as root canal sealers].
abstract: OBJECTIVE
  To compare the apical microleakage of Vitapex (calcium hydroxide based paste) with that of AH-plus and zinc oxide eugenol sealer when used with laterally condensed gutta percha obturation technique.
  
  
  METHODS
  One hundred single rooted human anterior teeth were instrumented and randomly divided into three experimental groups (A, B, C) of 30 teeth each and two control groups (D, E) of 5 teeth each. Group A was filled with laterally condensed gutta-percha using Vitapex as sealer. Group B was filled with laterally condensed gutta-percha using AH-plus as sealer. Group C was filled with laterally condensed gutta-percha using zinc oxide eugenol as sealer. Group D was the positive control. Group E was the negative control, which were coated with nail polish to entire root surface. Teeth were then suspended in 2% methylene blue. After this, teeth were demineralized dehydrated and cleared. Linear dye penetration was determined under stereomicroscope with calibrated eye piece.
  
  
  RESULTS
  The mean dye penetration for group A, B, C were respectively (0.57 +/- 0.56) mm, (0.79 +/- 0.96) mm and (1.07 +/- 1.12) mm. Group D demonstrated maximum dye penetration. Group E showed no dye penetration. There was no statistically significant difference between group B and group C (P > 0.05). However, there was statistically significant difference between group A and group B, C (P < 0.01).
  
  
  CONCLUSIONS
  This study showed that Vitapex used as endodontic sealer material are better than AH-plus sealer and zinc oxide eugenol sealer.
authors.affiliation: Dept. of Operative and Endodontics, Guanghua College of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China.
authors.forename: Hai-Jing
authors.initials: HJ
authors.lastname: Gu
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Liu
authors.forename: Qiong
authors.initials: Q
authors.lastname: Xu
authors.forename: Yong
authors.initials: Y
authors.lastname: Ou-Yang
authors.forename: Jun-Qi
authors.initials: JQ
authors.lastname: Ling
mesh_terms: D002126:Calcium Hydroxide; D003763:Dental Leakage; D003786:Dental Pulp Cavity; D006171:Gutta-Percha; D006801:Humans; D008963:Molar; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation; D012828:Silicones; D015035:Zinc Oxide-Eugenol Cement
chemical_list: D012387:Root Canal Filling Materials; D012828:Silicones; D015035:Zinc Oxide-Eugenol Cement; C029584:calcium hydroxide, iodoform, silicone oil drug combination; C112894:canals sealer; D006171:Gutta-Percha; D002126:Calcium Hydroxide