Affiliation:
1. UNESP - Univ Estadual Paulista, Brazil
2. Paranaense University, Brazil
3. UFS - Federal University of Sergipe, Brazil
Abstract
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.
Reference25 articles.
1. Hydroxyapatite-anchored dendrimer for in situ remineralization of human tooth enamel;Duo W;Biomaterials,2013
2. The relative anticaries effectiveness of three fluoride-containing dentifrices in Puerto Rico;Stookey GK;Caries Res,2004
3. Non-fluoride caries-preventive agents: executive summary of evidence-based clinical recommendations;Rethman MP;J Am Dent Assoc,2011
4. Trimetaphosphate and fluoride actions on mineralization at the enamel-solution interface;Gonzalez M;J Dent Res,1973
5. In vitro evaluation of dentifrice with low fluoride content supplemented with trimetaphosphate;Takeshita EM;Caries Res,2009
Cited by
11 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献