Fluoride bioavailability in saliva during acute psychological stress

Naumova, Ella A.; Sandulescu, T.; Benson, Sven; Engler, Harald; Schedlowski, Manfred; Zimmer, Stefan; Gaengler, Peter; Thie, Michael; Arnold, Wolfgang H.

doi:10.2478/s11536-012-0021-0

Cited by 2 publications

(6 citation statements)

References 49 publications

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“…The data from the present study showed that public speaking induces stress reactions that include a significant increase in the salivary cortisol concentration, confirming a previous investigation1427 The limitation of the investigated cohort to healthy male participants of the same age group helped to exclude age34, health state- and gender-dependent353637 salivary cortisol fluctuations and to minimize cortisol analysis misinterpretation.…”

Section: Discussionsupporting

confidence: 89%

“…These considerable changes in the distribution between the salivary sediment and supernatant saliva may be due to fluoride retention in the salivary sediment. However, a clear effect of stress reactions on the bioavailability of fluoride in supernatant saliva could not be shown, confirming the results of a previous investigation27.…”

Section: Discussionsupporting

confidence: 80%

“…Investigations that address the distribution of fluoride in salivary sediment and supernatant saliva are scarce46782731. The majority of publications about whole saliva content deal with supernatant saliva.…”

Section: Discussionmentioning

confidence: 99%

“…The increase in the total protein concentration after stress exposure may be due to sympathetic activation during stress as the sympathetic innervation of the salivary glands controls protein secretion1238. Recent studies1427 showed that the salivary flow rate does not change during stress responses. The intraoral salivary pH at 30 min.…”

Section: Discussionmentioning

confidence: 99%

“…Baseline values (T0) of unstimulated saliva were collected at 2:00 p.m. for five min. The following stress exposure was achieved by a public speech in front of an audience composed of university lecturers and students and was always performed between 2 p.m. and 2.30 p.m. in the same room of the university2728. The stress exposure was a question from one of the university lecturers concerning general knowledge.…”

Section: Methodsmentioning

confidence: 99%

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Dynamic changes in saliva after acute mental stress

Naumova

Sandulescu

Bochnig

et al. 2014

Sci Rep

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Stress-related variations of fluoride concentration in supernatant saliva and salivary sediment, salivary cortisol, total protein and pH after acute mental stress were assessed. The hypothesis was that stress reactions have no influence on these parameters. Thirty-four male students were distributed into two groups: first received the stress exposure followed by the same protocol two weeks later but without stress exposure, second underwent the protocol without stress exposure followed by the stress exposure two weeks later. The stressor was a public speech followed by tooth brushing. Saliva was collected before, immediately after stress induction and immediately, at 10, 30 and 120 min. after tooth brushing. Cortisol concentrations, total protein, intraoral pH, and fluoride content in saliva were measured. The data were analyzed statistically. Salivary sediment was ca 4.33% by weight of whole unstimulated saliva. Fluoride bioavailability was higher in salivary sediment than in supernatant saliva. The weight and fluoride concentration was not altered during 2 hours after stress exposure. After a public speech, the salivary cortisol concentration significantly increased after 20 minutes compared to the baseline. The salivary protein concentration and pH also increased. Public speaking influences protein concentration and salivary pH but does not alter the fluoride concentration of saliva.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Dynamic changes in saliva after acute mental stress

Naumova

Sandulescu

Bochnig

et al. 2014

Sci Rep

Self Cite

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Dynamics of Fluoride Bioavailability in the Biofilms of Different Oral Surfaces after Amine Fluoride and Sodium Fluoride Application

Naumova

Dickten

Jung

et al. 2016

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It was the aim of this study to investigate differences in fluoride bioavailability in different oral areas after the application of amine fluoride (AmF) and sodium fluoride (NaF). The null hypothesis suggested no differences in the fluoride bioavailability. The tongue coating was removed and biofilm samples from the palate, oral floor and cheeks were collected. All subjects brushed their teeth with toothpaste containing AmF or NaF. Specimens were collected before, as well as immediately after and at 30 and 120 minutes after tooth brushing. The fluoride concentration was determined. The area under the curve was calculated for each location and compared statistically. In the tongue coating, fluoride concentration increased faster after NaF application than after AmF application. After 30 minutes, the fluoride concentration decreased and remained stable until 120 minutes after AmF application and returned to baseline after NaF application. The difference between the baseline and the endpoint measurements was statistically significant. The fluoride concentration in the tongue coating remained at a higher level compared with the baseline for up to 120 minutes post-brushing. This may indicate that the tongue coating is a major reservoir for fluoride bioavailability. The results also indicate an unequal fluoride distribution in the oral cavity.

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Fluoride bioavailability in saliva during acute psychological stress

Cited by 2 publications

References 49 publications

Dynamic changes in saliva after acute mental stress

Dynamic changes in saliva after acute mental stress

Dynamics of Fluoride Bioavailability in the Biofilms of Different Oral Surfaces after Amine Fluoride and Sodium Fluoride Application

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