Effect of sodium trimetaphosphate on hydroxyapatite solubility: An in vitro study

dc.contributor.authorSouza, José Antonio Santos [UNESP]
dc.contributor.authordo Amaral, Jackeline Gallo [UNESP]
dc.contributor.authorMoraes, João Carlos Silos [UNESP]
dc.contributor.authorSassaki, Kikue Takebayashi [UNESP]
dc.contributor.authorDelbem, Alberto Carlos Botazzo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:30:11Z
dc.date.available2014-05-27T11:30:11Z
dc.date.issued2013-08-20
dc.description.abstractThis study evaluated the effect of different concentrations of sodium trimetaphosphate (TMP) with and without fluoride (F) on the concentration of calcium (Ca), phosphorus (P) and F in hydroxyapatite (HA). Synthetic HA powder (0.15 g) was suspended (n=6) in solutions (75 mL) of TMP at 0%, 0.1%, 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, 2.0%, 4.0%, 6.0%, 8.0% and 10% concentrations in the presence and absence of 100 ppm F and subjected to a pH-cycling process. The precipitates were filtrated, dried at 70° C for 24 h and ground onto a fine powder. The concentrations of F (KOH (CaF2) and HCl (FA) soluble), Ca (Arsenazo III), and P (molybdate method) in HA were determined. The Ca P, and Ca/P ratio data were subjected to Tukey's test and the F data were subjected to Student-Newman-Keuls test (p<0.05). The addition of TMP to the samples reduced F deposition to 98% (p<0.001). The groups containing 100 ppm F and 0.4% or 0.6% TMP exhibited a higher Ca concentration than the group containing only 100 ppm F (p<0.05). Furthermore, the HA treated with 0.2% and 0.4% TMP and 100 ppm F showed a higher Ca/P ratio than the other groups (p<0.001). In conclusion, TMP at 0.2%, 0.4% and 0.6% concentrations combined with F seemed to be able to precipitate HA with low solubility. However, especially at high concentrations, TMP interferes with F deposition on HA.en
dc.description.affiliationDepartment of Pediatric Dentistry and Public Health Dental School UNESP - Universidade Estadual Paulista, Araçatuba, SP
dc.description.affiliationUnespDepartment of Pediatric Dentistry and Public Health Dental School UNESP - Universidade Estadual Paulista, Araçatuba, SP
dc.format.extent235-240
dc.identifierhttp://dx.doi.org/10.1590/0103-6440201302000
dc.identifier.citationBrazilian Dental Journal, v. 24, n. 3, p. 235-240, 2013.
dc.identifier.doi10.1590/0103-6440201302000
dc.identifier.file2-s2.0-84881518018.pdf
dc.identifier.issn0103-6440
dc.identifier.issn1806-4760
dc.identifier.lattes7239471016654133
dc.identifier.orcid0000-0002-8159-4853
dc.identifier.scieloS0103-6440201302000
dc.identifier.scopus2-s2.0-84881518018
dc.identifier.urihttp://hdl.handle.net/11449/76297
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Journal
dc.relation.ispartofsjr0,476
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectDemineralization
dc.subjectFluoride
dc.subjectHydroxyapatite
dc.subjectSolubility
dc.subjectTrimetaphosphate
dc.titleEffect of sodium trimetaphosphate on hydroxyapatite solubility: An in vitro studyen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/bdj/iaboutj.htm
unesp.author.lattes7239471016654133
unesp.author.lattes0421571920582994[5]
unesp.author.orcid0000-0002-8159-4853[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

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