Influence of calcium hydroxide association on the physical properties of AH plus

Marco Antonio Hungaro Duarte, Ronald Ordinola-Zapata, Ricardo Affonso Bernardes, Clovis Monteiro Bramante, Norberti Bernardineli, Roberto Brandão Garcia, Ivaldo Gomes De Moraes

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Introduction: This study evaluated in vitro the radiopacity, setting time, flow, film thickness, solubility, and dimensional changes of AH Plus sealer pure (Dentsply De Trey Gmbh, Konstanz, Germany) and containing 5% and 10% of calcium hydroxide. Methods: The study was performed according to the requirements of the ISO 6876:2001 standard and the American National Standards Institute/American Dental Association (ANSI/ADA)'s Specification No. 57. The following tests were performed: setting time, flow, film thickness, dimensional stability, radiopacity, and solubility. Data were analyzed statistically by analysis of variance and the Tukey tests with a significance level of 5%. Results: The addition of 5% or 10% calcium hydroxide to AH Plus sealer did not alter significantly the radiopacity or setting time values (p > 0.05). Adding 10% calcium hydroxide reduced the flow compared with pure AH Plus and AH Plus/5% calcium hydroxide. The addition of 5% and 10% calcium hydroxide increased the solubility and expansion of AH Plus. All materials presented expansion valued above those recommended by the ADA. The addition of calcium hydroxide to the sealer resulted in greater film thickness. Conclusions: The addition of 5% calcium hydroxide did not affect most physical properties of AH Plus sealer.

Original languageEnglish (US)
Pages (from-to)1048-1051
Number of pages4
JournalJournal of Endodontics
Volume36
Issue number6
DOIs
StatePublished - Aug 11 2010
Externally publishedYes

Keywords

  • AH Plus
  • calcium hydroxide
  • flow
  • radiopacity
  • setting time

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