Effect of different radiopacifying agents on the physicochemical properties of white portland cement and white mineral trioxide aggregate

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDuarte, Marco Antonio Hungaro
dc.creatorMinotti, Paloma Gagliardi
dc.creatorRodrigues, Clarissa Teles
dc.creatorZapata, Ronald Ordinola
dc.creatorBramante, Clovis Monteiro
dc.creatorFilho, Mário Tanomaru
dc.creatorVivan, Rodrigo Ricci
dc.creatorMoraes, Ivaldo Gomes de
dc.creatorBombarda de Andrade, Flaviana
dc.date2014-05-27T11:26:23Z
dc.date2016-10-25T18:36:38Z
dc.date2014-05-27T11:26:23Z
dc.date2016-10-25T18:36:38Z
dc.date2012-03-01
dc.date.accessioned2017-04-06T01:57:26Z
dc.date.available2017-04-06T01:57:26Z
dc.identifierJournal of Endodontics, v. 38, n. 3, p. 394-397, 2012.
dc.identifier0099-2399
dc.identifierhttp://hdl.handle.net/11449/73203
dc.identifierhttp://acervodigital.unesp.br/handle/11449/73203
dc.identifier10.1016/j.joen.2011.11.005
dc.identifier2-s2.0-84857192183
dc.identifierhttp://dx.doi.org/10.1016/j.joen.2011.11.005
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/894023
dc.descriptionIntroduction: The aim of this study was to evaluate the pH, calcium ion release, setting time, and solubility of white mineral trioxide aggregate (WMTA) and white Portland cement (WPC) combined with the following radiopacifying agents: bismuth oxide (BO), calcium tungstate (CT), and zirconium oxide (ZO). Methods: Fifty acrylic teeth with root-end filling material were immersed in ultrapure water for measurement of pH and calcium release (atomic absorption spectrophotometry) at 3, 24, 72, and 168 hours. For evaluation of setting time, each material was analyzed according to the American Society for Testing and Materials guidelines 266/08. The solubility test was performed according to American National Standards Institute/American Dental Association specification no. 57/2000. Solubility, setting time, and pH values were compared by using analysis of variance and Tukey test, and the values of calcium release were compared by the Kruskal-Wallis and Miller tests. The significance level was set at 5%. Results: The pH and calcium release were higher at 3 and 24 hours. WPC was the material with the higher values for both properties. WMTA had the greatest solubility among all materials (P <.05). All radiopacifiers increased the setting time of WPC, and WMTA had the shortest setting time among all materials (P < .05). Conclusions: All materials released calcium ions. Except for WPC/CT at 168 hours, all materials promoted an alkaline pH. On the basis of the obtained results, ZO and CT can be considered as potential radiopacifying agents to be used in combination with Portland cement. Copyright © 2012 American Association of Endodontists.
dc.languageeng
dc.relationJournal of Endodontics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectMTA
dc.subjectphysico-chemical properties
dc.subjectPortland cement
dc.subjectradiopacifying agents
dc.subjectalkali
dc.subjectaluminum derivative
dc.subjectbismuth
dc.subjectbismuth oxide
dc.subjectcalcium
dc.subjectcalcium derivative
dc.subjectcalcium tungstate
dc.subjectcontrast medium
dc.subjectmineral trioxide aggregate
dc.subjectoxide
dc.subjectsilicate
dc.subjecttooth cement
dc.subjecttungsten derivative
dc.subjectwater
dc.subjectzirconium
dc.subjectzirconium oxide
dc.subjectatomic absorption spectrometry
dc.subjectchemistry
dc.subjectcomparative study
dc.subjectdiffusion
dc.subjectdrug combination
dc.subjecthuman
dc.subjecthumidity
dc.subjectmaterials testing
dc.subjectpH
dc.subjectphysical chemistry
dc.subjectsolubility
dc.subjecttemperature
dc.subjecttime
dc.subjectAlkalies
dc.subjectAluminum Compounds
dc.subjectBismuth
dc.subjectCalcium
dc.subjectCalcium Compounds
dc.subjectContrast Media
dc.subjectDental Cements
dc.subjectDiffusion
dc.subjectDrug Combinations
dc.subjectHumans
dc.subjectHumidity
dc.subjectHydrogen-Ion Concentration
dc.subjectMaterials Testing
dc.subjectOxides
dc.subjectPhysicochemical Phenomena
dc.subjectSilicates
dc.subjectSolubility
dc.subjectSpectrophotometry, Atomic
dc.subjectTemperature
dc.subjectTime Factors
dc.subjectTungsten Compounds
dc.subjectWater
dc.subjectZirconium
dc.titleEffect of different radiopacifying agents on the physicochemical properties of white portland cement and white mineral trioxide aggregate
dc.typeOtro


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