Effect of fluoride amalgams on artificial recurrent enamel and root caries

Skartveit, Liv; Wefel, James S.; Ekstrand, Jan

doi:10.1111/j.1600-0722.1991.tb01030.x

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…This result is in agreement with those of other studies that demonstrated reduced demineralization along the cavity wall adjacent to the restoration of Synalloy fluore (Skartveit et al, 1991). Because the high-copper Tytin (NA) would have a corrosion rate similar to that of the highcopper Synalloy fluore (FA), microleakage may exert only a minimal influence on the difference in the lesion along the wall between the NA and FA groups.…”

Section: Fluoride Effectssupporting

confidence: 92%

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Effects of Aged Fluoride-containing Restorative Materials on Recurrent Root Caries

et al. 1998

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Accumulated evidence has illustrated that secondary caries is the major reason for the failure of amalgam and resin composite restorations. The purpose of this study was to assess the cariostatic effects of aged fluoride-containing restorative materials on the formation of secondary root caries. Fifty sound human molars were selected and randomly assigned to five material groups: non-fluoride-containing amalgam (NA), fluoride-containing amalgam (FA), non-fluoride-containing composite (NC), fluoride-containing composite (FC), and glass-ionomer cement (GIC). After standardized class V cavity preparations and placement of restorations, teeth within each group were randomly divided into two subgroups, "non-aged" and "aged". The aged subgroup was immersed in an inorganic buffer solution for 2 wks before being thermocycled. After being thermocycled and subjected to four cycles of caries formation in a bacterial model system, the teeth were sectioned. Depths of outer lesions and areas of lesions on the cavity walls were measured by polarized light microscopy. The results showed that the FA and GIC groups, whether aged or not, had significantly smaller outer lesion depth than the non-fluoride-containing NA and NC groups. After aging, the FA group demonstrated significantly greater lesion depth (p = 0.0002), while the GIC group exhibited no significant changes in lesion depths. The NA group had a greater wall lesion area than the NC group, while both demonstrated no significant changes following 2 weeks of aging. The FA and GIC groups had similar inhibition areas along the cavity walls, whereas both inhibition areas increased significantly after the aging process. It is concluded that the fluoride-containing amalgam and the glass-ionomer cement, even after a two-week aging process, can still elicit a significant preventive effect on recurrent root caries in an in vitro bacterial model system.

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Section: Fluoride Effectssupporting

confidence: 92%

“…Using a gel-type caries formation system, Skartveit et al (1991) compared demineralization adjacent to Synalloy and Synalloy fluore restorations. They demonstrated a significant inhibition of demineralization in the fluoridated amalgam group along the cavity walls, but not on the outer surfaces, both in root and in enamel.…”

Section: Fluoride Effectsmentioning

confidence: 99%

Effects of Aged Fluoride-containing Restorative Materials on Recurrent Root Caries

et al. 1998

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“…A similar study 127 , involving 18 Class V cavities in the buccal and lingual surfaces of 18 extracted premolars restored with a range of materials, concluded that restoration of cavities with glass-ionomer materials and fluoride-containing amalgam may be of great importance in the prevention of both secondary caries around the restorations and primary caries in surface enamel adjacent to the restoration. A further study 128 using an artificial caries model compared the effect of both fluoridated and non-fluoridated amalgams on the inhibition of enamel and root lesions in human extracted teeth. Protection was most evident with a high-copper silver amalgam containing 1% (wt) SnF 2 .…”

Section: Dental Amalgammentioning

confidence: 99%

Fluoride-containing restorative materials

Burke¹,

Ray²,

McConnell³

2006

International Dental Journal

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Dental practitioners are exposed to an increasing number of dental materials, which claim the benefits of fluoride release. The purpose of this paper is to critically review the literature of these materials. Glass ionomers, resin modified glass ionomers, compomers, resin composites, fissure sealants and amalgam are discussed. It is clear that a long-term measurable release of fluoride can be observed from certain restorative materials, in vitro, particularly glass ionomer cement, resin modified glass ionomer cement, fluoridated cements, fluoridated dental amalgam and certain fissure sealants. In general, the rate of fluoride release is not constant but exhibits a relatively rapid initial rate, which decreases with time. However, the fluoride release profiles may be dependent on specific formulation and on experimental design and sampling methods. These materials may feature greater longevity, a reduced incidence of marginal failure, an elevated concentration of fluoride in contingent plaque, together with an antibacterial action when compared with non-fluoride releasing materials. In addition, fluoride-releasing materials may perform better in caries inhibition in artificial caries model studies than non-fluoridated materials. While any, or all, of these anti-cariogenic effects may be associated with fluoride release, a direct relationship between fluoride release profiles and such effects has not been determined in vivo.

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“…Caries incidence is falling in many developed eountries (1-3), where placing amalgam fillings is the largest single item of treatment in dental praclice (4), ln several developing countries, earies prevalence is increasing (5-7), While for many people in such countries tlic need for restorative treatment may nol be met, placement of fillings can be expected to be the principal type of treatment, where manpower resources permit (7,8), Even where dental manpower resources are relatively good, this is not a very successful therapy: about 5O' !^i of amalgam fillings are replaced within 5 yr in Scotland (9), Seeondary caries is a frequent cause of failure of amalgam fillings (10, 11), Amalgam whieh contains fluoride has been available for many years (12), Fluoride is known to be released from sueh amalgam both in vitro (13) and in vivo (14) and it has been shown that fiuoride from a fiuoride-containing amalgam is taken up in enamel and dentine in vitro (15,16) and in vivo (17), This has an inhibitory effect on cavity wall lesions in vitro (18,19), A 2-yr clinical trial of fluoride-containing amalgam fillings in Norway showed that the addition of fiuoride to amalgam did not result in significantly more corrosion or marginal breakdown than occurs in conventional amalgam fillings (20), However, in that study caries incidence among the participants was low. and the • number of participants wa,>; small, so lhe study lacked the power to register an effect on secondary earies incidence.…”

mentioning

confidence: 99%

Effect of fluoride in amalgam on secondary caries incidence

Skartveit

Riordan

Dallal

1994

Comm Dent Oral Epid

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Caries incidence is falling in many developed countries but is believed to be increasing in developing countries. Insofar as treatment for caries is provided, ordinary amalgam restorations are usually the standard choice. These carry a risk of failing due to secondary caries. The aim of this study was to compare the occurrence of secondary caries adjacent to fluoride-containing amalgam with that adjacent to a conventional amalgam under field conditions in Bahrain. Children (n = 415) aged 6-14 yr who required occlusal restorations in two homologous contralateral permanent molar teeth were identified. Using the split-mouth design, one tooth received a fluoride-containing amalgam filling and the other a conventional amalgam restoration. A random method was used to determine which type of filling was placed on each side. After 4 yr, 357 children were still available for examination; of these 5 had to be eliminated from analysis for various reasons. Of the 704 teeth in the analysis, secondary caries had occurred in 135 (86 conventional amalgam, 49 fluoridated amalgam). By comparison with the conventional amalgam, the effectiveness of the fluoride amalgam was 43% (95% C.I. 24.4%, 57.1%) and the net gain 10.3% (95% C.I. 4.75%, 16.3%). The relative risk was 0.570 (95% C.I. 0.444%, 0.731%). Since fluoride amalgam has identical handling properties to conventional amalgam, performs similarly under clinical conditions and costs about the same, it should be the amalgam of choice for restorations in communities where the incidence of secondary caries is high.

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Effect of fluoride amalgams on artificial recurrent enamel and root caries

Cited by 4 publications

References 16 publications

Effects of Aged Fluoride-containing Restorative Materials on Recurrent Root Caries

Effects of Aged Fluoride-containing Restorative Materials on Recurrent Root Caries

Fluoride-containing restorative materials

Effect of fluoride in amalgam on secondary caries incidence

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