The short-term in situ model to evaluate the anticariogenic potential of ionomeric materials

Tenuta, Lívia Maria Andaló; Ribeiro, Cecília Cláudia Costa; Gonçalves, Nilza; Cury, Altair Antoninha Del Bel; Aires, Carolina Patrícia; Tengan, Cristiana; Tagliaferro, E. P. S.; Pecharki, Giovana Daniela; Napimoga, Marcelo Henrique; Tabchoury, Cínthia Pereira Machado; Cury, Jaime Aparecido

doi:10.1016/j.jdent.2004.11.011

Cited by 22 publications

(32 citation statements)

References 26 publications

(37 reference statements)

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“…[35][36][37][38] One possible explanation may be due to experimental differences used in these studies. Tenuta et al 36 employed a short-term in situ model, which, in our opinion, may have overestimated the favorable effects of glass ionomers because fluoride release tends to be higher in the period immediately following placement of fresh material. 6 Similarly, Amaral et al 38 have used glass ionomer cement for sealing pits and fissures, presenting different characteristics.…”

Section: Discussionmentioning

confidence: 99%

In situ effects of restorative materials on dental biofilm and enamel demineralisation

Sousa

Zanin

Lima

et al. 2009

Journal of Dentistry

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Section: Discussionmentioning

confidence: 99%

In situ effects of restorative materials on dental biofilm and enamel demineralisation

Sousa

Zanin

Lima

et al. 2009

Journal of Dentistry

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“…They were in good general and oral health Tenuta et al, 2005], met the inclusion criterion (normal salivary flow rate) [Rios et al, 2006;Magalhães et al, 2008] and did not violate the exclusion criteria (use of any form of medication likely to interfere with salivary secretion, use of fixed or removable orthodontic appliances, pregnancy or breast-feeding, smoker, systemic illness).…”

Section: In Situ Studymentioning

confidence: 99%

Evaluation of Laser Fluorescence in the Monitoring of the Initial Stage of the De-/Remineralization Process: An in vitro and in situ Study

et al. 2009

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This study aimed to evaluate laser fluorescence (LF) for monitoring the initial stage of subsurface de- and remineralization (<150 μm depth). Ninety-six sound blocks of bovine enamel, selected according to surface hardness (SH) and LF were used in two experimental studies, in vitro and in situ. In vitro, blocks were exposed to a demineralizing solution, then remineralized by pH cycling for 6 days. In situ, 10 volunteers wore acrylic palatal appliances, each containing 4 dental enamel blocks that were demineralized for 14 days by exposure to 20% sucrose solution. Following this treatment, blocks were submitted to remineralization for 1 week with fluoride dentifrice (1,100 μg F/g). In both experiments, SH and LH were measured after demineralization and after remineralization. Further, enamel blocks were selected after the demineralization/remineralization steps for measurement of cross-sectional hardness and integrated loss of subsurface hardness (ΔKHN). SH and ΔKHN showed significant differences among the phases in each study. LF values for sound, demineralized and remineralized enamel were: 5.2 ± 1.1, 8.1 ± 1.2 and 5.6 ± 0.8, respectively, in the in vitro study, and 5.3 ± 0.3, 16.5 ± 4.7 and 6.5 ± 2.5, respectively, in the in situ study, values for demineralized enamel being significantly higher than for sound and remineralized enamel in both studies. However, LF was correlated with ΔKHN only in situ. LF was capable of monitoring de- and remineralization in early lesions in situ, when bacteria are presumably present in the caries lesion body, but is not correlated with mineral changes in bacteria-free systems.

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“…The in situ model used here has been previously employed to assess the effect of fluoride-based therapies, such as toothpastes [Cury et al, 2003Tenuta et al, 2009a, b], topical fluoride treatments , as well as dental materials [Tenuta et al, 2005]. Nevertheless, in all the mentioned studies, the bacterial pellets were grown in the presence of sucrose, to benefit from the known effect of EPS in enhancing sugar diffusion and also the cariogenicity of the model [Zero et al, 1986].…”

Section: Discussionmentioning

confidence: 99%

Fluoride Penetration and Clearance Are Higher in Exopolysaccharide-Containing Bacterial Pellets

et al. 2018

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Extracellular polysaccharides (EPS) could increase the penetration of fluoride through dental biofilm, reducing its cariogenicity. We measured the concentration of fluoride in EPS-containing (EPS⁺) or not-containing (EPS^–) Streptococcus mutans bacterial pellets resembling test biofilms, before and up to 60 min after a 0.05% NaF rinse in situ. Fluoride penetration and clearance were higher in EPS⁺ bacterial pellets. The data suggest that EPS enhances fluoride penetration, but also accelerates fluoride clearance from dental biofilms.

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The short-term in situ model to evaluate the anticariogenic potential of ionomeric materials

Cited by 22 publications

References 26 publications

In situ effects of restorative materials on dental biofilm and enamel demineralisation

In situ effects of restorative materials on dental biofilm and enamel demineralisation

Evaluation of Laser Fluorescence in the Monitoring of the Initial Stage of the De-/Remineralization Process: An in vitro and in situ Study

Fluoride Penetration and Clearance Are Higher in Exopolysaccharide-Containing Bacterial Pellets

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