Effect of Brushing with Fluoride Toothpastes on the Fluoride, Calcium, and Inorganic Phosphorus Concentrations in Approximal Plaque of Young Adults

Ad, Sidi

doi:10.1159/000261190

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…First, the salivary calcium concentrations associated with the use of Crest were slightly lower than those associated with the use of the placebo dentifrice, but the plaque calcium concentrations were substantially higher (table 2). This finding contrasts with those of other investigators [Sidi, 1989;Sidi and Wilson, 1991], who found no change in approximal plaque calcium 1 h after brushing with an NaF dentifrice. If, however, our finding with smooth surface plaque (mainly facial and lingual) is confirmed it raises the possibility that high salivary fluoride concentrations promote the migration of calcium from saliva into plaque.…”

Section: Discussioncontrasting

confidence: 99%

Plaque Fluoride Concentrations Are Dependent on Plaque Calcium Concentrations

et al. 2002

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Despite the 1,000-fold difference between the fluoride concentrations ([F]) in dentifrices and fluoridated drinking water, clinical and epidemiological studies have shown that they have similar cariostatic effects. This double-blind, crossover study was done to determine whether the [F] in dental plaque is related more to the [F] of the dentifrice used or to the plaque concentrations of calcium and magnesium. The subjects (n = 13) were adults and residents of a city served with fluoridated drinking water. After 1 week of using a fluoridated dentifrice (940 ppm) or a placebo dentifrice, whole saliva and plaque were collected 1.0 h and approximately 12 h after the last use of the dentifrices. The average salivary [F] after brushing with the F dentifrice was higher than after using the placebo. The average plaque [F] 1.0 h after brushing with the F dentifrice was higher than after using the placebo (p < 0.01), but the difference at 12 h was not significant. Plaque [Ca] and [F] were directly related under all experimental conditions (p = 0.0001). The relationships between plaque [Mg] and [F] were weaker and inconsistent. Based on these findings and reports in the literature it is concluded that, for persons whose drinking water is fluoridated, plaque [F] throughout much of the day is not significantly increased by the use of a fluoridated dentifrice. Instead they are directly related to plaque [Ca]. These findings offer at least a partial explanation for why fluoridated dentifrices and drinking water have similar cariostatic effects.

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Section: Discussioncontrasting

confidence: 99%

Plaque Fluoride Concentrations Are Dependent on Plaque Calcium Concentrations

et al. 2002

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“…In a previous study [Sidi, 1989], significant increas es in the concentration of fluoride, calcium and inor ganic phosphorus were observed in approximal plaque collected 1 h after brushing with toothpastes containing either MFP or NaF. The duration of the raised concentration of these inorganic ions in ap proximal plaque is important as it may give some in dication of whether fluoride from MFP is stored in plaque and might also influence the recommenda tions that clinicians make concerning the frequency of toothbrushing with such toothpastes.…”

mentioning

confidence: 92%

Fluoride, Calcium and Inorganic Phosphorus Concentrations in Approximal Plaque Collected from Young Adults 1 and 24 h after Toothbrushing with Fluoride Toothpastes

Sidi¹,

Wilson²

1991

Caries Res

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A within-subject double-blind cross-over study was carried out to examine whether the chemical composition of approximal plaque was altered 1 and 24 h after brushing with fluoride toothpaste. Three fluoride toothpastes were tested, containing either sodium monofluorophosphate with calcium glycerophosphate supplement and calcium carbonate abrasive, a combination of sodium monofluorophosphate and sodium fluoride with the same supplement and abrasive or sodium fluoride with a silica abrasive. A fluoride-free toothpaste with a silica abrasive acted as the control. 19 subjects used the toothpastes separately in randomised order for 1 week each prior to collection of plaque. Contralateral half-mouth approximal plaque samples were collected 1 and 24 h after the last use of each toothpaste. Fluoride, calcium and inorganic phosphorus concentrations of plaque were estimated. The results indicated that brushing with toothpastes containing fluoride and/or calcium supplements resulted in increased concentrations of these constituents in approximal plaque 1 h after brushing. These elevated levels of inorganic ions were not observed in the samples collected 24 h after brushing. It was concluded that the potentially beneficial effect of a raised concentration of fluoride and calcium in approximal plaque observed soon after brushing is lost during the following 24 h.

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“…Regular usage of fluoride increases the concentration o f fluoride in plaque on smooth surfaces and in fissures [Sidi, 1989;Duckworth et al, 1989;Vogel et al, 1992] …”

Section: Introductionmentioning

confidence: 99%

Effect of a Fluoridated Toothpaste on Lesion Development in Plaque-Filled Dentine Grooves: An Intra-Oral Study

1997

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Fluoride can inhibit caries at plaque-retention sites, but some studies indicate that fluoride is less effective in fissures than on smooth surfaces. To study the efficacy of fluoridated toothpastes at plaque-retention sites, an intra-oral model was used with bovine coronal dentine discs, in which grooves of two different widths were sawn. The discs were mounted in the partial prostheses of 31 participants divided into two groups. One group brushed with a non-fluoridated toothpaste and a second with a paste containing 1,000 ppm fluoride as NaF After 3 months, the specimens were retrieved and from each a thin section was taken for microradiographic analysis. Lesions which developed in the grooves resembled natural lesions in terms of the presence of a surface layer and the mineral content profiles. Extensive lesions followed the direction of the dentinal tubules. The mineral loss was quantified half-way into and at the base of the grooves and ranged from 0 to 20,000 vol% × μm. Analysis of variance showed that the mineral loss was significantly influenced by the treatment and the width of the grooves (p < 0.001). In the broad grooves the average mineral loss was 19% smaller in the fluoride group than in the non-fluoride group, in the narrow grooves this value was 7%. Taking the two treatment groups together, the average mineral loss was largest half-way into the broad grooves (4,921 vol% × μm) and smallest at the base of the narrow grooves (2,289 vol% × μm). The results with this new intra-oral model indicate that the dimensions of small grooves in dentine, and thus their accessibility, determine not only their susceptibility to caries but also the protective effect of a fluoridated toothpaste.

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Effect of Brushing with Fluoride Toothpastes on the Fluoride, Calcium, and Inorganic Phosphorus Concentrations in Approximal Plaque of Young Adults

Cited by 13 publications

References 16 publications

Plaque Fluoride Concentrations Are Dependent on Plaque Calcium Concentrations

Plaque Fluoride Concentrations Are Dependent on Plaque Calcium Concentrations

Fluoride, Calcium and Inorganic Phosphorus Concentrations in Approximal Plaque Collected from Young Adults 1 and 24 h after Toothbrushing with Fluoride Toothpastes

Effect of a Fluoridated Toothpaste on Lesion Development in Plaque-Filled Dentine Grooves: An Intra-Oral Study

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