Experimental Secondary Caries around Restorations in Roots

Dérand, Tore; Johansson, Björn

doi:10.1159/000260819

Cited by 30 publications

(9 citation statements)

References 18 publications

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“…These studies, however, used undialyzed gel and much longer immersion periods in the gels, although the results are similar. Our findings are also in line with those of DERAND & JoHANSON (19) who reported slight inhibitory effect on artificial root lesions when testing an amalgam eontaining 0.5% SnF, in an acidified gel model.…”

Section: Discussionsupporting

confidence: 92%

Effect of fluoride amalgams on artificial recurrent enamel and root caries

Skartveit

Wefel

Ekstrand

1991

European J Oral Sciences

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Abstract— The present study examined the effect of F‐containing amalgams on recurrent caries in vitro. Four amalgams were tested: A ‐ Conventional amalgam; B ‐ Amalgam A with 1% SnF2; C ‐ Non‐gamma‐2 amalgam; D ‐ Amalgam C with 1% SnF2. Twenty fillings from each amalgam were placed at the cementoenamel junction in sound extracted human teeth. The teeth were covered with varnish except for a 2‐mm‐wide zone around the fillings and immersed in separate vials containing dialyzed 15% gelatin gel, pH 4.2, for 17 days. Longitudinal sections through the created enamel and root lesions were examined using polarized light microscopy with distilled water as imbibition medium. Lesion depth was measured adjacent to the fillings and at the midpoint of the lesions. In the amalgam D group, 14 enamel lesions and 15 root lesions showed no demineralization in the area closest to the fillings, and mean lesion depth was significantly smaller than adjacent to the F‐free amalgams in enamel as well asin root surfaces. In the root lesions, protection was most evident in amalgam D. At the midpoint of the lesions, depths were not statistically different between groups A‐D. This study suggests that fluoride amalgams have anticaries properties sufficient to inhibit recurrent caries.

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Section: Discussionsupporting

confidence: 92%

Effect of fluoride amalgams on artificial recurrent enamel and root caries

Skartveit

Wefel

Ekstrand

1991

European J Oral Sciences

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“…Also in vitro, demineralization around glass iono mer is markedly reduced [Derand and Johansson, 1984;Hicks et al, 1986;Hattab et al, 1989;Forss and Seppa, 1990]. It has been suggested that the main reason for this is the influence of fluoride released by glass ionomer mate rial on the demineralization process.…”

mentioning

confidence: 99%

Enamel and Plaque Fluoride following Glass Ionomer Application in vivo

1992

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Glass ionomer fillings have been suggested to act as a fluoride-releasing system in the mouth. The aim of the present study was to evaluate whether a glass ionomer slab applied on the enamel can increase the fluoride content of the enamel and plaque of adjacent teeth in real-life conditions with frequent exposure to fluoride from other sources. Twenty-five adults living in a town with fluoridated drinking water participated in the study. The initial enamel fluoride content on the buccal surface of the contralateral premolars was determined using the acid etch biopsy technique. A round glass ionomer slab was placed buccally on the first molar on a randomly chosen side of the mouth (test side). After 2 weeks, the enamel fluoride content of premolars on the test and control sides was again determined whilst avoiding the site of the first biopsy. In addition, one biopsy was made on a previously etched area. After 2 and 4 weeks, plaque was collected from three approximal surfaces both on the test and control side, and the total fluoride content of the plaque was analysed. There were no significant differences in the fluoride content of sound or etched enamel before and after placement of glass ionomer. The fluoride content of approximal plaque of teeth close to glass ionomer was not higher than that of the control teeth, either after 2 or 4 weeks. Using the present method, no increase in the fluoride level of teeth adjacent to glass ionomer could be demonstrated. This may be due to the masking effect of fluoride from other sources.

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“…It is important that the consequences of microleakage are minimized by all available means at our disposal. The cariostatic effect of glass ionomer, due to the release of fluorides, is one of the major methods (Derand & Johanson, 1984;Swartz, Phillips & Clark, 1984). The present study evaluated the favourable combination ofthe 'sandwich' technique that would minimize marginal microleakage at the enamel (occlusal) margin and particularly at the cervical (below the cemento-enamel junction) cavosurface line angle.…”

Section: Discussionmentioning

confidence: 99%

Microleakage in three designs of glass ionomer under composite resin restorations

Gordon

Wasserstein²,

Gorfil

et al. 1991

J of Oral Rehabilitation

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Three Class V cavity configurations with walls above and below the cemento-enamel junction were compared when 'sandwich' technique restorations with glass ionomer and composite resin were used. No dye penetration occurred at the occlusal cavosurface margin when the latter was bevelled and light-cured Scotchbond was applied to the etched enamel before restoration with Durafil composite resin. The least dye penetration at the gingival margin was observed when Ketac bond glass ionomer covered the entire non-bevelled wall. No configuration entirely eliminated dye penetration at the gingival margin.

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Experimental Secondary Caries around Restorations in Roots

Cited by 30 publications

References 18 publications

Effect of fluoride amalgams on artificial recurrent enamel and root caries

Effect of fluoride amalgams on artificial recurrent enamel and root caries

Enamel and Plaque Fluoride following Glass Ionomer Application in vivo

Microleakage in three designs of glass ionomer under composite resin restorations

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