Prevention of in vitro Secondary Caries with an Experimental Fluoride-exchanging Restorative Resin

Zimmerman, B. F.; Rawls, H. Ralph; Querens, A. E.

doi:10.1177/00220345840630051701

Cited by 46 publications

(20 citation statements)

References 12 publications

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“…Several studies have shown that fluoride levels increase in enamel and dentine adjacent to glass-ionomer [14,15] and this might be expected to assist caries inhibition. This fluoride was originally in the glass from which the glassionomer was formed, and as such, associated with aluminium and sodium ions [15].…”

Section: Discussionmentioning

confidence: 99%

Ion migration from fluoride-releasing dental restorative materials into dental hard tissues

Gjorgievska

Nicholson

Grcev

2012

J Mater Sci: Mater Med

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This study was carried out in order to determine the extent to which ions released from fluoride-containing dental restoratives migrated through the enamel and dentine of extracted teeth. A total of 40 permanent human 3rd molars were used. They were extracted for orthodontic reasons, and employed within 1 month of extraction. A cervical (Class V) cavity was prepared in each tooth, then filled with one of: a conventional glass-ionomer, a resin-modified glass-ionomer, a polyacid-modified composite resin ("compomer") or a fluoride-releasing resin composite. Ten samples were prepared per material. After 1 month, five specimens per material were prepared and examined under SEM/EDX. Concentrations of sodium, aluminium, strontium, fluorine, magnesium, silicon, phosphorus and calcium were determined within the tooth. After 18 months, the remaining five specimens for each material were prepared and studied in the same way. The greatest extent of ion migration into the tooth was found with the conventional glass-ionomer and least migration was found for the fluoride-releasing composite, which showed no evidence of fluoride migration at all. Levels of migrating ions were generally higher in the 18 month specimens than in the 1 month specimens, and also higher in the dentine than in the enamel. Ions released by restorative dental materials have been shown conclusively for the first time to be capable of migrating into the enamel and dentine surrounding the restoration. The conventional glass-ionomer showed the highest level of ion migration whereas the fluoridated composite resin showed little if any ion migration. This suggests that the conventional glass-ionomer has the greatest caries inhibiting effects of all the materials tested, and the fluoridated composite the least.

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Section: Discussionmentioning

confidence: 99%

Ion migration from fluoride-releasing dental restorative materials into dental hard tissues

Gjorgievska

Nicholson

Grcev

2012

J Mater Sci: Mater Med

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“…On the other hand, various resin-bound fluoride compounds have been developed as organic components so that these do not show any noticeable deterioration by adopting some unique fluoride-releasing mechanisms [Mirth et al, 1983;Tanaka et al, 1987;Gron et al, 1989]. Some use ion-exchange reactions between fluorine ion (F -) and hydroxy ion (OH -) [Tanaka et al, 1987] or chloride ion (Cl -) [Zimmerman et al, 1984] after diffusion of water.…”

Section: Discussionmentioning

confidence: 99%

In vitro Enamel and Cementum Fluoride Uptake from Three Fluoride–Containing Composites

et al. 1998

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The incorporation of fluoride into restorations is desirable because of its cariostatic action. The purpose of this study was to determine fluoride release and fluoride uptake by enamel and cementum from three visible light–cured fluoride–containing composites. Seven circular discs of each composite were prepared and the amount of fluoride released into distilled water was determined at daily intervals for 14 days and then after 30, 60 and 90 days. The fluoride concentration in enamel and cementum was determined in three successive depths by an acid etch biopsy procedure. The composite slabs were made and ligated to the enamel and cementum surfaces and the teeth were immersed in synthetic saliva for 7 days. After removal of the composite slabs, three successive biopsies were again performed. Then the teeth were immersed in 1 M KOH for 24 h and similar biopsies done. The fluoride concentrations were adjusted to standardized depths of 10μm, and the total and bound fluoride uptake calculated. The amounts of fluoride released were significantly different among the three composites. The fluoride released decreased sharply after 1 day and then gradually reached a plateau. As for the enamel and cementum fluoride uptake, FluorEver showed the largest uptake followed by FluoroCore and then Pertac–Hybrid.

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“…Fluoride is well documented as an anti cariogenic agent. Fluoride-releasing restorative materials may be able to reduce the recurrent caries at the restoration margins 12,13,14,15,16 . Recurrent caries is the most frequent cause foe the failure of dental restorations 7,17 .…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength, Fluoride Release and Recharge of Giomer

Quader

Alam

Bashar

et al. 2013

Update Dent. Coll. j

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Current restorative materials with high fluoride release generally have lower mechanical properties. Therefore they may not be as durable clinically as lower fluoride release materials, particularly in load bearing areas. The aim of the present study is to explore the fluoride release and recharging ability as well as its compressive strength of the newly developed material called Giomer. The name Giomer is a hybrid of the words Glass Ionomer and Composite. Giomer contain a revolutionary PRG (Pre Reacted Glass) filler technology. They have properties of both conventional Glass Ionomer (fluoride release and recharge) and resin Composite (excellent esthetics, easy polishability and biocompatibility). MATERIALS & METHODS: Seven disk specimens of Giomer, Compomer and Glass Ionomer restorative materials were prepared for measurement of fluoride release and recharge using Ion Chromatography (IC) anion analyzer machine. Another seven disk specimens of Giomer, Compomer and Composite restorative materials were prepared for measurement of compressive strength using Universal Testing Machine (UTM). RESULTS: The value of compressive strength of Giomer is greater than that of Composite and Compomer but the fluoride release capability of Giomer becomes low in comparison to Glass Ionomer but not significant in comparison to compomer. CONCLUSIONS: Giomer have high compressive strength (271 Mpa) and an initial fluoride (1.41 ppm) release. It also exhibit fluoride recharge capabilities. So, Giomer to be a better restorative material other than any fluoride releasing materials. DOI: http://dx.doi.org/10.3329/updcj.v2i2.15533 Update Dent. Coll. j: 2012; 2 (2): 28-37

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Prevention of in vitro Secondary Caries with an Experimental Fluoride-exchanging Restorative Resin

Cited by 46 publications

References 12 publications

Ion migration from fluoride-releasing dental restorative materials into dental hard tissues

Ion migration from fluoride-releasing dental restorative materials into dental hard tissues

In vitro Enamel and Cementum Fluoride Uptake from Three Fluoride–Containing Composites

Compressive Strength, Fluoride Release and Recharge of Giomer

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