A continuous flow system for assessing fluoride release/uptake of fluoride-containing restorative materials

Hsu, Hsiu Ming; Huang, Guan‐Tarn; Chang, Hao-Hueng; Wang, Yin‐Lin; Guo, Mingke

doi:10.1016/j.dental.2003.10.008

Cited by 19 publications

(17 citation statements)

References 17 publications

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“…Among the materials tested in the present study, Vitremer released the highest amount of fluoride. The larger pore size and greater porosity of RMGIC in comparison to GIC may explain the difference in the initial leaching of fluoride from the glass particles 18 , and the type and amount of resin used in photochemical polymerization may also affect fluoride release rates 20 .…”

Section: Discussionmentioning

confidence: 99%

Fluoride and aluminum release from restorative materials using ion chromatography

et al. 2012

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ObjectiveThe aim of this study was to determine the amounts of fluoride and aluminum released from different restorative materials stored in artificial saliva and double-distilled water. Material and MethodsCylindrical specimens (10 x 1 mm) were prepared from 4 different restorative materials (Kavitan Plus, Vitremer, Dyract Extra, and Surefil). For each material, 20 specimens were prepared, 10 of which were stored in 5 mL artificial saliva and 10 of which were stored in 5 mL of double-distilled water. Concentrations of fluoride and aluminum in the solutions were measured using ion chromatography. Measurements were taken daily for one week and then weekly for two additional weeks. Data were analyzed using two-way ANOVA and Duncan's multiple range tests (p<0.05). ResultsThe highest amounts of both fluoride and aluminum were released by the resin-modified glass ionomer cement Vitremer in double-distilled water (p<0.05). All materials released significantly more fluoride in double-distilled water than in artificial saliva (p<0.05). In artificial saliva, none of the materials were observed to release aluminum. ConclusionIt was concluded that storage media and method of analysis should be taken into account when the fluoride and aluminum release from dental materials is assessed.

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Section: Discussionmentioning

confidence: 99%

Fluoride and aluminum release from restorative materials using ion chromatography

et al. 2012

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“…Another benefit of the fluoride coatings lies in the form of fluorine released. In the ion chromatography data, only the free fluorine ion was detected without the presence of any complex forms, which is in contrast to the resin‐based orthodontic materials where the fluoride was also released in the form of complexes 20–22. Only the free fluorine ions are known to be effective in imparting resistance to secondary caries, because they can be taken up easily into the tooth structure and transform hydroxyapatite into fluorapatite 23…”

Section: Discussionmentioning

confidence: 96%

Fluoride coatings on orthodontic wire for controlled release of fluorine ion

et al. 2005

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The purpose of this study was to develop a new method of releasing fluorine in a controlled manner for applications in the field of orthodontic Ti-based wire, namely the coating of fluorides on Ti. Thin films of two fluoride compounds, CaF 2 and MgF 2 , were coated on Ti via the electron-beam evaporation method. The fluorine was released rapidly from the as-deposited MgF 2 coating within a short period , and then the release rate slowed down. When the MgF 2 coating was heat treated, this initial burst effect was decreased, but a significant amount of cracks were generated. On the other hand, in the case of the as-deposited CaF 2 coating, fluorine was released linearly for the entire period, without an initial burst. In the heat-treated CaF 2 coatings the trend was similarly observed. The linear fluorine release from the CaF 2 coatings, even in the as-deposited state, was attributed to the high degree of crystallinity of the coatings. A preliminary cell test showed favorable cell viability on both the fluoride coatings. Given their sustained and controlled fluorine release, these fluoride coatings, particularly CaF 2 , are suggested to be potentially useful in the field of orthodontic Ti-based wire.

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“…The final results were reported as fluoride release rate (μg/cm 2 /day) by taking into account the surface area and solution volume of each specimen using the following equation,[20] where 0.1256 cm 2 is the surface area of the material tested.…”

Section: Methodsmentioning

confidence: 99%

Recharge pattern of contemporary glass ionomer restoratives

Arbabzadeh-Zavareh¹,

Gibbs²,

Meyers³

et al. 2012

Dent Res J

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Background:As glass ionomers have the ability to reload fluoride from outside sources, the aim was to compare the recharge pattern of six glass ionomer cements after exposure to fluoride.Materials and Methods:Fuji VII, Fuji IX, Riva Pink, Riva Bleach, Ketac Fil and Fuji IX Extra were investigated. The fluoride-containing materials used were tooth paste and mouth wash (Colgate). Specimens of each material (n=15) were immersed separately in deionized water for 59 days. Then the samples of each material were divided into three groups of five each. Two groups were recharged for 2, 20 and 60 min daily during three consecutive weekly intervals and then no treatment for one week. The third group was used as control. Fluoride release measurements (μg/cm2/day) were made in every 24 h. One-way and repeated measures analysis of variance tests were used.Results:Tooth paste recharged materials showed higher level of recharge. On day 1, the difference of fluoride release from different treatment groups of different materials except for Fuji IX Extra were not significant (P>0.05). On days 7 and 14, the differences observed were significant (P<0.05) for all materials except for Fuji VII (tooth paste versus mouth wash) and Trial Fuji IX (mouth wash versus control) and on day 14 for Rvia Pink (mouth wash versus control). On days 21 and 28, the differences observed were significant for all the materials (P<0.05) except for Riva Pink (toothpaste versus mouth wash), Riva Bleach, Ketac Fil and Trial FujiI X (mouth wash versus control) on day 28.Conclusion:A time tabled schedule of application of fluoride-containing materials could help to achieve high fluoride release.

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A continuous flow system for assessing fluoride release/uptake of fluoride-containing restorative materials

Cited by 19 publications

References 17 publications

Fluoride and aluminum release from restorative materials using ion chromatography

Fluoride and aluminum release from restorative materials using ion chromatography

Fluoride coatings on orthodontic wire for controlled release of fluorine ion

Recharge pattern of contemporary glass ionomer restoratives

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