Factors relating to the rate of fluoride-ion release from glass-ionomer cement

Cranfield, Michael R.; Kuhn, A. T.; Winter, G B

doi:10.1016/0300-5712(82)90028-8

Cited by 66 publications

(30 citation statements)

References 11 publications

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“…Similar to previous reports (11,(14)(15)(16), the initial burst of fluoride release from GI materials is followed by a marked decrease within 1-2 days. Further, this decrease was less pronounced in group CMC+F, supporting the greater fluoride release from specimens exposed to fluoride-containing solutions (6), owing to the welldocumented rechargability of the GI cement (17,18).…”

Section: Discussionsupporting

confidence: 77%

Effect of brushing with two different abrasives on fluoride release by high-viscosity glass ionomer cement

Nassar

Platt

2015

J Oral Sci

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Keywords: topical fluoride; glass ionomer cements; toothbrushing; abrasion. IntroductionFluoride release from restorative materials has been proposed as a possible mechanism to reduce the occurrence of dental caries (1,2). Glass ionomers (GIs) are considered important in this regard due to their exceptionally high fluoride release (3,4). Multiple factors, including daily exposure to fluoridated dentifrices, affect the release of fluoride from GIs (5-7). Exposure to 1,250 ppm fluoride slurry for 5 min was shown to significantly increase fluoride release from compomer specimens (8). Furthermore, fluoride re-release from GIs is reportedly increased by brushing the specimens instead of merely storing them in a dentifrice slurry (9). A lower, but more transient and sustained, fluoride release has shown to play a significant role in caries prevention (10). To the best of our knowledge, the effect of brushing with dentifrice slurries containing different abrasive levels on fluoride release of high-viscosity GIs has not been previously reported. Slurries with high abrasive content could enhance fluoride release from GIs owing to the faster abrasion of such materials and exposing deeper, more fluoride-rich layers.The main objective of this study was to investigate the effect of brushing with two levels of abrasives on fluoride release from high-viscosity GIs. We hypothesized that brushing with slurries containing higher abrasive levels would enhance fluoride release from the GI material. Materials and Methods Specimen preparationTo minimize the possible effects of pigments and other GI ingredients, a single shade (A2) of a high-viscosity GI

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Section: Discussionsupporting

confidence: 77%

Effect of brushing with two different abrasives on fluoride release by high-viscosity glass ionomer cement

Nassar

Platt

2015

J Oral Sci

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“…This suggests that the elution of species from the glass-ionomer cement is controlled by their diffusion in the set cement. Cranfield et al (1982) reported that the elution of F from a glass-ionomer cement immersed in distilled water increased when the sample thickness was changed from 1 mm to 10 mm. In addition, Kuhn and Jones (1982) stated that, by means of EDX analysis, no concentration gradients were observed in the set silicate or glass-ionomer cements when exposed to running water for two months.…”

Section: Discussionmentioning

confidence: 98%

Mechanism for Erosion of Glass-ionomer Cements in an Acidic Buffer Solution

1987

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In order to clarify the mechanism for erosion of glass-ionomer cements, we immersed two commercial luting cements in an acidic buffer solution under various conditions. The amounts of F, Al, Si, and Ca eluted from the cement were (1) in proportion to the square root of immersion time, (2) unrelated to shape or volume of the sample, (3) dependent on its surface area, and (4) not affected by shaking of the solution. It was concluded that the dissolution was controlled by the diffusion of those species in the cement matrix, which was influenced by the structure of the matrix and the concentration of H+ ion at the cement surface. The unreacted glass particles near the cement surface were dissolved by the long immersion, and many pores were left in the surface region.

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“…Ion release takes part in the formation of the cement matrix and contributes to the therapeutic activity, giving these materials the potential to be used for various clinical applications. The fluoro-alumino-silicate glass-based CGPCs are known for their sustained release of clinically beneficial amounts of fluoride [51,141,142], as shown by Wilson et al [143], who found that the release of fluoride continued for at least 18 months. Fluoride plays an important biological role, particularly in dentistry, and has the effect of improving the resistance of the tooth material to acid attack, decreasing demineralization and increasing remineralization, inhibiting dental decays, and making the cement translucent [144][145][146].…”

Section: Ion Releasementioning

confidence: 99%

“…This is in agreement with the literature [154], where it was indicated that PAA readily complexes alkali metal cations. A study [141] on fluoride release showed that acidity of the PAA component of a CGPC and/or the powder:liquid mixing ratio may affect the rate of fluoride release from CGPCs. Xu and Burgess [155] proposed a mathematical equation [Eq.…”

Section: Ion Releasementioning

confidence: 99%

The role of poly(acrylic acid) in conventional glass polyalkenoate cements

Alhalawani

Curran

Boyd

et al. 2015

Journal of Polymer Engineering

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Abstract Glass polyalkenoate cements (GPCs) have been used in dentistry for over 40 years. These novel bioactive materials are the result of a reaction between a finely ground glass (base) and a polymer (acid), usually poly(acrylic acid) (PAA), in the presence of water. This article reviews the types of PAA used as reagents (including how they vary by molar mass, molecular weight, concentration, polydispersity and content) and the way that they control the properties of the conventional GPCs (CGPCs) formulated from them. The article also considers the effect of PAA on the clinical performance of CGPCs, including biocompatibility, rheological and mechanical properties, adhesion, ion release, acid erosion and clinical durability. The review has critically evaluated the literature and clarified the role that the polyacid component of CGPCs plays in setting and maturation. This review will lead to an improved understanding of the chemistry and properties of the PAA phase which will lead to further innovation in the glass-based cements field.

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Factors relating to the rate of fluoride-ion release from glass-ionomer cement

Cited by 66 publications

References 11 publications

Effect of brushing with two different abrasives on fluoride release by high-viscosity glass ionomer cement

Effect of brushing with two different abrasives on fluoride release by high-viscosity glass ionomer cement

Mechanism for Erosion of Glass-ionomer Cements in an Acidic Buffer Solution

The role of poly(acrylic acid) in conventional glass polyalkenoate cements

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