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https://ri.ufs.br/jspui/handle/riufs/24349| Document Type: | Artigo |
| Title: | Effect of trimetaphosphate and fluoride association on hydroxyapatite dissolution and precipitation in vitro |
| Authors: | Delbem, Alberto Carlos Botazzo Souza, José Antonio Santos Zaze, Ana Carolina Soares Fraga Takeshita, Eliana Mitsue Sassaki, Kikue Takebayashi Moraes, João Carlos Silos |
| Issue Date: | 2014 |
| Resumo : | The present study analyzed the action of sodium trimetaphosphate (TMP) and/or fluoride on hydroxyapatite. Hydroxyapatite powder was suspended in different solutions: deionized water, 500 µg F/mL, 1,100 µg F/mL, 1%TMP, 3%TMP, 500 µg F/mL plus 1%TMP and 500 µg F/mL plus 3%TMP. The pH value of the solutions was reduced to 4.0 and after 30 min, raised to 7.0 (three times). After pH-cycling, the samples were analyzed by X-ray diffraction and infrared spectroscopy. The concentrations of calcium fluoride, fluoride, calcium and phosphorus were also determined. Adding 1% or 3% TMP to the solution containing 500 µg F/mL produced a higher quantity of calcium fluoride compared to samples prepared in a 1,100 µg F/mL solution. Regarding the calcium concentration, samples prepared in solutions of 1,100 µg F/mL and 500 µg F/mL plus TMP were statistically similar and showed higher values. Using solutions of 1,100 µg F/mL and 500 µg F/mL plus TMP resulted in a calcium/phosphorus ratio close to that of hydroxyapatite. It is concluded that the association of TMP and fluoride favored the precipitation of a more stable hydroxyapatite. |
| Keywords: | Hydroxyapatite Polyphosphates Demineralization Solubility Fluoride |
| ISSN: | 1806-4760 |
| Is part of: | Brazilian Dental Journal |
| Language: | eng |
| Publisher / Institution : | Fundação Odontológica de Ribeirão Preto |
| Citation: | DELBEM, A. C. B. et al. Effect of trimetaphosphate and fluoride association on hydroxyapatite dissolution and precipitation in vitro. Brazilian Dental Journal, Ribeirão Preto, v. 25, n. 6, p. 479-484, 2014. Disponível em: https://www.scielo.br/j/bdj/a/x5NwPgpMsmKBcpDLFwfkWYS/?lang=en. Acesso em: 22 jan. 2026. |
| License: | Creative Commons Atribuição-NãoComercial 3.0 Não Adaptada (CC BY-NC 3.0) |
| URI: | https://ri.ufs.br/jspui/handle/riufs/24349 |
| Appears in Collections: | DOD - Artigos de periódicos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| EffectTrimetaphosphateFluorideAssociation.pdf | 485,51 kB | Adobe PDF |  View/Open |
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