Enamel and Plaque Fluoride following Glass Ionomer Application in vivo

Seppä, Liisa; Salmenkivi, S.; Forss, Helena

doi:10.1159/000261465

Cited by 21 publications

(8 citation statements)

References 15 publications

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“…Furthermore, all samples were placed below the acrylic margin level of the intra-oral devices to allow plaque accumulation and to simulate what would happen in a child with an erupting tooth that is not adequately cleaned. Consequently, as mentioned by some authors 21,26,28 , the fluoride accumulated in the dental plaque (biofilm) and the decreased number of S. mutans and Lactobacillus gave rise to the remineralization of the artificial caries lesions. Some investigations have demonstrated and proven that along the GIC restorations there is a certain amount of bacterial inhibition 21,25,28 .…”

Section: Discussionmentioning

confidence: 96%

Effects of a glass-ionomer cement on the remineralization of occlusal caries: an in situ study

Tostes

Guedes-Pinto

Chevitarese³

2006

Braz. oral res.

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This work evaluated the remineralization of demineralized enamel of pits and fissures of human third molars sealed with a glass ionomer cement (Fuji IX, GC Corporation -Japan) or with a Bis-GMA sealant (DeltonDentsply). Ten volunteers participated in this in situ study that consisted of two thirty-day periods using intra-oral devices, with a week's interval in between. Four experimental treatment procedures and one control were randomly assigned to the volunteers' specimens: Group I, no treatment, control; Group II, artificial caries process; Group III, same treatment as Group II, but sealed with Delton (Dentsply); Group IV, same treatment as Group II, but sealed with Fuji IX (GC Corporation -Japan); Group V, same treatment as Group II and no sealing. Groups I and II were not submitted to the oral environment and served as controls. After a period of 30 days in the oral environment, the specimens were removed from the devices, embedded in acrylic resin, ground flat and polished. Then, Knoop hardness tests were performed, with a 25 g static load applied for 15 seconds. The measurements were made from the base of the fissure up to an opening of 600 µm, pre-established between the inclines of the cusps. Three indentations were then made, located at 25, 75, and 125 µm in depth from the outer enamel margin and 100 µm apart from each other (Micromet 2003). The Brieger F and Bonferroni's tests were applied to the measurements. It was concluded that sealing with the glass ionomer cement Fuji IX was capable of making the enamel of pits and fissures more resistant by increasing the value of Knoop hardness. DESCRIPTORS: Glass ionomer cements; Dental enamel; Hardness. RESUMO:Esta pesquisa avaliou a remineralização do esmalte de fóssulas e fissuras de terceiros molares humanos previamente desmineralizados e selados com um cimento de ionômero de vidro (Fuji IX, GC Corporation -Japão) ou com um selante de Bis-GMA (Delton-Dentsply). Dez voluntários participaram deste estudo in situ que consistiu de dois períodos de 30 dias com intervalo de 1 semana entre eles, usando dispositivos intra-orais. Quatro procedimentos de tratamento experimental e um controle foram aleatoriamente distribuídos entre os espécimes que foram usados pelos voluntários: Grupo I, sem qualquer tratamento, controle; Grupo II, processo de cárie artificial; Grupo III, igual ao Grupo II, porém selados com Delton (Dentsply); Grupo IV, igual ao Grupo II, porém selados com Fuji IX (GC Corporation -Japão); Grupo V, igual ao Grupo II, mas sem selamento. Os Grupos I e II não foram submetidos ao meio bucal e serviram de controle. Após um período de trinta dias no meio bucal, os espécimes foram removidos dos dispositivos, montados em resina acrílica, planificados e polidos. Realizaram-se então testes de Dureza Knoop com carga estática de 25 g por 15 segundos. As medidas foram realizadas desde a base da fissura até uma abertura de 600 µm, preestabelecida entre os planos inclinados das cúspides. A cada 100 µm, três penetrações foram realizadas: a primeira a 25 µm...

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Section: Discussionmentioning

confidence: 96%

Effects of a glass-ionomer cement on the remineralization of occlusal caries: an in situ study

Tostes

Guedes-Pinto

Chevitarese³

2006

Braz. oral res.

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“…Seppä, et al . demonstrated that GICs may affect acid production and electrolyte metabolism of S. mutans (27). Fluoride release from these material combined with a pH fall around the material seems to be the most probable reason of the perturbation of Streptococcus metabolism (6).…”

Section: Discussionmentioning

confidence: 99%

Antibacterial activity of glass–ionomer cements, compomers and resin composites: relationship between acidity and material setting phase

Vermeersch¹,

Leloup²,

Delmée

et al. 2005

J of Oral Rehabilitation

116

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Agar diffusion testing was used with four different media to evaluate the antibacterial activity of six products (one conventional glass-ionomer cement (GIC), two light-activated glass-ionomers, two polyacid-modified resin composites and one resin composite) on Streptoccoccus mutans. Their respective antibacterial activities were also compared during and after setting. The relationship between product acidity and antibacterial activity was evaluated. All the GICs demonstrated antibacterial properties in contrast to the polyacid-modified resin composites and resin composite which did not shown any antibacterial effects. Vitrebond GIC exhibited higher antibacterial action, probably because of a cytotoxic photo-initiator diphenyliodoniumchloride. A direct relationship between material acidity and growth inhibition of S. mutans was observed.

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“…In several stud ies, the fluoride concentration of plaque growing on, or ad jacent to, glass ionomer has been found to be increased [Forss et al, 1991;Hallgrcn ct al., 1993;Benelli et al, 1993], but no increase was found in the study of Seppa et al [1992], study o f Berg et al [1990], the effect was only temporary, and in the study of van Dijken et al [1991], no reduction of mutans streptococci or lactobacilli was found in plaque on 1-year-old glass ionomers.…”

mentioning

confidence: 99%

Fluoride Concentration, Mutans Streptococci and Lactobacilli in Plaque from Old Glass lonomer Fillings

Forss¹,

Näse²,

Seppä³

1995

Caries Res

Self Cite

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Previous studies have found that the fluoride concentration of plaque growing on or adjacent to glass ionomer cement (GIC) is increased and the proportion of mutans streptococci in plaque is reduced. So far, there are only a few studies of the long-term effect of glass ionomer fillings on plaque in vivo. The aim of this study was to determine whether old GIC fillings have effects on plaque fluoride and microflora and whether this effect can be increased by topical application of fluoride on GIC fillings in vivo. The participants were 27 adults with at least 3 GIC fillings about 3 years old. Plaque was collected from sites adjacent to the GIC fillings and from the contralateral teeth, after which a 1.2% fluoride gel was applied to all teeth. Three days later, plaque was collected from the same sites as before. Stimulated saliva was also collected at both appointments. The results show that none of the patients had elevated levels of fluoride in their saliva either before or 3 days after the fluoride treatment. The fluoride concentration was 0.51 μg/mg protein in plaque on GICs and 0.35 μg/mg protein in plaque on contralateral teeth (p = 0.028). After the fluoride treatment, the respective fluoride concentrations were 0.59 μg/mg and 0.75 μg/mg (p = 0.849). No significant differences in the proportion of mutans streptococci and lactobacilli in plaque from GIC and contralateral teeth were found. The results suggest that the fluoride concentration of plaque growing on old GIC fillings is slightly increased. In this study, however, this had no significant effect on the cariogenic microflora. Fluoride application on old GIC fillings did not significantly increase the fluoride concentration of plaque.

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Enamel and Plaque Fluoride following Glass Ionomer Application in vivo

Cited by 21 publications

References 15 publications

Effects of a glass-ionomer cement on the remineralization of occlusal caries: an in situ study

Effects of a glass-ionomer cement on the remineralization of occlusal caries: an in situ study

Antibacterial activity of glass–ionomer cements, compomers and resin composites: relationship between acidity and material setting phase

Fluoride Concentration, Mutans Streptococci and Lactobacilli in Plaque from Old Glass lonomer Fillings

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