Fluoride release from light-activated glass ionomer restorative cements

Momoi, Yasuko; McCabe, J.F.

doi:10.1016/0109-5641(93)90112-4

Cited by 110 publications

(77 citation statements)

References 9 publications

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“…This suggests that the recharge ability of this resin may be reinforced after a large amount of fluoride ions has been released. Studies into the anticariogenic effects of fluoridereleasing restorative materials have shown that fluoride is released from glass-ionomer cements [14][15][16][17][18][19][20] , resin modified glass-ionomer cements [17][18][19][20][21] and resin composite [20][21][22][23][24][25] . According to studies comparing the fluoride release and recharge properties of conventional glass ionomers and more recently developed fluoride-containing resin composite [20][21][22][23][24][25] , the amount of fluoride released from both these restorative materials was high during the first few days after immersion in DW, but dropped immediately thereafter [19][20][21] .…”

Section: Discussionmentioning

confidence: 99%

Fluoride release and recharge characteristics of denture base resins containing surface pre-reacted glass-ionomer filler

et al. 2009

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The flexural strength, flexural modulus, and the amount of fluoride released from four experimental denture base resins containing 5, 10, 20 and 30 wt% surface pre-reacted glass-ionomer (S-PRG) filler added to the powder were evaluated. The mean flexural strength of the experimental resins, except the 30 wt%, and the flexural modulus of all the resins, complied with ISO 1567 requirements. In the 20 wt% resin, the amount of fluoride released in the initial phase was 1.88 μg/cm 2 /day, after which the level decreased. After recharging in a 9,000 ppm fluoride solution for eight hours, the level of released fluoride increased markedly to 40.21 μg/cm 2 /16hrs. Our results show that fluoride levels increased as a function of the S-PRG filler content. After the almost completely discharged resins were recharged, similar fluoride release occurred again. These results suggest that denture base resins containing S-PRG filler have great recharge and release capabilities which may assist in preventing root caries of abutment teeth.

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Section: Discussionmentioning

confidence: 99%

Fluoride release and recharge characteristics of denture base resins containing surface pre-reacted glass-ionomer filler

et al. 2009

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“…With regard to in vitro, so far in experiments using GI-based material, it has been reported that over 3000 ppm fluorine is uptaken into enamel matrix from sealant material 24,26) , and fluorine volume released from glass ionomer cement is overwhelmingly high 27) . On the other hand, sealant material itself is easy to break down and lysis occurs through saliva, and thus protection period for tooth matrix from caries is reported to be short as compared to…”

Section: Discussionmentioning

confidence: 99%

Transition of Fluoride into Tooth Substance from Sustained Fluoride-Releasing Sealant - In vitro Evaluation -

Motohashi

Furukawa

Shimoda

et al. 2010

J. Hard Tissue Biology.

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Abstract:How transition of fluorine from orally applied sealant into dental matrix occurs and inhibits caries remains unknown. In the current study, we investigated mechanism of caries protection evaluating movement of fluoride ions from sustained-releasing fluoride sealant by EPMA from a crystallographic point and also from inorganic chemical view. Furthermore, we also evaluated differences of 2 kinds of sealant as a fluoride source, which have different releasing mechanism.Our results demonstrated that fluoride ion released from sealant abundantly accumulated in porous structure of tooth. From this result, it was considered that fluoride ion contributed to caries inhibition by infiltrating into porous structure appeared due to decalcification and enhancing pH environment. This result suggests thinking morphological viewpoint upon efficiency of fluorine in clinical dentistry for caries. When 2 different sealant materials were compared, GI-based sealant significantly released more fluoride ion than resin-based fluorine. Moreover GI-based sealant fluoride ion infiltrated significantly much more into decalcified area than resinbased fluorine. Thus in clinical dentistry, selection of GI-based fluoride ion at early periods and then alternation to long-term keeping resin-based fluorine should be considered to treat caries in a better way.

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“…The mechanism by which fluoride acts on adjacent tooth surface is similar to that of GIC. 3,12,13 The lower release of fluoride from Compomer can be explained by the fact that these products are hydrophobic resins which set by polymerization. 5 These do not contain water, as seen in conventional and resin modified glass ionomers, but they absorb water after weeks of curing thereby resulting in an acid-base reaction, which is secondary thus the amount of fluoride released by this group is lesser.…”

Section: Ijoprdmentioning

confidence: 99%

“…The setting reaction of RMGIC as "dual setting", in which both polymerization and acid base reaction take place. 11,12 The latter takes place by the virtue of HEMA, which is a hydrophilic monomer, which absorbs water and results in the reaction. The greater area of demineralization in this group is caused by lesser fluoride release as compared to GIC.…”

Section: Ijoprdmentioning

confidence: 99%

Effect of Short-term Fluoride Release from Various Restorative Cements on Enamel Demineralization: An in vitro Study

Patil¹,

Goud²,

Sajjan³

2011

International Journal of Prosthodontics and Restorative Dentistry

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Purpose Fluorides are probably the most commonly used anticaries agents. Due to this property they are incorporated into various restorative materials. The rate and amount of fluoride release, however, vary for different materials, which in turn determines the effectiveness of the restorative material in preventing demineralization around the restoration. To evaluate the fluoride release and area of demineralization of resin modified glass ionomers and compomers, and compare them with conventional glass ionomer cement and also to evaluate the relationship between the fluoride release and demineralization. Materials and methods A total of 32 human incisors were chosen and sectioned horizontally at CEJ, and the middle 2 mm of facial enamel isolated and restored with the test materials: Conventional glass ionomer cement (GIC), resin modified glass ionomer cement (RMGIC), compomer and resin composite. The specimens were observed under polarized light microscope with image analyzer to measure the area and depth of demineralization. For fluoride release study, disks of test materials were suspended in deionized water and fluoride release was measured till a period of 4 days. Results The area and depth of demineralization were least around the GIC, followed by RMGIC, compomer and composite (p < 0.05). A negative correlation was found between fluoride release and demineralization which was, however, not statistically significant. Conclusion The 4-day fluoride release was also higher for GIC as compared to RMGIC and Compomer.

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Fluoride release from light-activated glass ionomer restorative cements

Cited by 110 publications

References 9 publications

Fluoride release and recharge characteristics of denture base resins containing surface pre-reacted glass-ionomer filler

Fluoride release and recharge characteristics of denture base resins containing surface pre-reacted glass-ionomer filler

Transition of Fluoride into Tooth Substance from Sustained Fluoride-Releasing Sealant - In vitro Evaluation -

Effect of Short-term Fluoride Release from Various Restorative Cements on Enamel Demineralization: An in vitro Study

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