title: Evaluation of pH and calcium ion release of Acroseal sealer in comparison with Apexit and Sealapex sealers.
abstract: OBJECTIVE
  This is an in vitro assessment of pH level and calcium ion release exhibited by 3 calcium hydroxide-based root canal sealers-Sealapex, Apexit, and Acroseal.
  
  
  METHODS
  The materials were prepared according to the manufacturers' instructions and placed in 1 cm long and 4 mm diameter tubes. The tubes were then immersed in a glass flask containing 10 mL bidistilled water (n = 15), which was sealed and stored at 37 degrees C before the materials had set. The control group contained bidistilled water with empty tubes (n = 12). At predetermined time intervals (24 h, 96 h, and 7, 15, and 28 days) the pH of the bidistilled water was tested with a pH meter and for released calcium by using spectrophotometry. The data were statistically analyzed using 1-way analysis of variance for the comparison of the materials at each time point. If the difference was significant, individual comparisons were performed by Tukey multiple comparisons test (alpha = .05).
  
  
  RESULTS
  Sealapex produced higher pH and released significantly higher calcium amounts than the other 2 sealers at all periods (P < .05). Apexit showed higher calcium release than Acroseal at the end of 15 days (P < .05). There was no significant difference in the pH between Apexit and Acroseal (P > .05).
  
  
  CONCLUSIONS
  The new Acroseal sealer presented the least calcium ion release and pH than Sealapex and less calcium ion release than Apexit sealer.
authors.affiliation: Department of Endodontics, Faculty of Dentistry, University of Selcuk, Konya, Turkey. aunverdi@selcuk.edu.tr <aunverdi@selcuk.edu.tr>
authors.forename: Ayce Unverdi
authors.initials: AU
authors.lastname: Eldeniz
authors.forename: Ali
authors.initials: A
authors.lastname: Erdemir
authors.forename: Firuze
authors.initials: F
authors.lastname: Kurtoglu
authors.forename: Timur
authors.initials: T
authors.lastname: Esener
mesh_terms: D002118:Calcium / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D012387:Root Canal Filling Materials / Q000737:chemistry*; D012459:Salicylates / Q000737:chemistry
chemical_list: C477053:Acroseal; C074418:Apexit; D012387:Root Canal Filling Materials; D012459:Salicylates; C055601:Sealapex; D002126:Calcium Hydroxide; D002118:Calcium