On the Properties of Fluoride Solutions Used for Topical Treatment and Mouth Rinse

Larsen, Mona; Jensen, Stig Jorgo

doi:10.1159/000260920

Cited by 14 publications

(15 citation statements)

References 14 publications

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“…In previous studies we have found that the yield of calcium fluoride from a neutral 2% sodium fluoride solution ranges around 0.1-1 nmol calcium fluoride material per square millimeter of enamel surface [Larsen and Jensen, 1986;Larsen and Richards, 1998]. Although direct comparison between studies must be cautious, similar results have been obtained by other workers [Saxegaard and Rølla, 1988;Bruun and Givskov, 1991].…”

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confidence: 59%

Prevention by Means of Fluoride of Enamel Erosion as Caused by Soft Drinks and Orange Juice

Larsen¹

2001

Caries Res

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Fluoride has been suggested to prevent erosion of the teeth, either after a topical treatment of the teeth or by addition of fluoride to the acidic drink. The main aim of the present study was to describe the dissolution of calcium fluoride in some soft drinks and orange juice and compare it with the amounts of calcium fluoride left on the enamel surfaces after a topical treatment. A further aim was to describe the dissolution of enamel in soft drinks and juice saturated for 3 days with solid calcium fluoride. Solid calcium fluoride was suspended in each of 10 soft drinks and orange juices and gently agitated for 72 h, after which the drinks were analyzed for calcium, phosphate and fluoride and pH was determined. To examine the erosion–preventive effect of the calcium fluoride–rich drink, intact teeth were exposed to the drinks with or without calcium fluoride. It was found that from 6 to 45 mg of calcium fluoride was dissolved per liter of drink. The more acidic the drink, the more calcium fluoride was dissolved, presumably due to HF formation. The teeth exposed to the soft drinks all showed erosion–like lesions. Very little effect of the 4–6 ppm ionic fluoride dissolved in the soft drinks was observed. In orange juice, however, the dissolved calcium fluoride established a saturation with respect to fluorapatite and consequently, the erosion–like lesion was replaced by a caries–like lesion. In conclusion, the acidic soft drinks are capable of dissolving considerable amounts of calcium fluoride and the erosion–preventive effect of even high fluoride concentrations is limited.

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confidence: 59%

Prevention by Means of Fluoride of Enamel Erosion as Caused by Soft Drinks and Orange Juice

Larsen¹

2001

Caries Res

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“…Further, in previous studies we found that topical treatment of a tooth with neutral 2% NaF yields up to 0.5 nmol CaF 2 /mm 2 enamel surface. For a large tooth with a surface area of 500 mm 2 , this corresponds to a total of 0.25 Ìmol calcium fluoride [Larsen and Jensen, 1986;Larsen and Richards, 2001]. In comparison, this study showed that 1 litre of prepared fruit drink may dissolve from 0.31/2 = 0.15 mmol calcium fluoride (Rynkeby) to 0.99/2 = 0.5 mmol (Fun Rhubarbs, table 1) calcium fluoride, which is 150-500 Ìmol calcium fluoride, equivalent to what can be deposited at the surface of 600-2,000 teeth.…”

Section: Discussionmentioning

confidence: 99%

Fluoride Is Unable to Reduce Dental Erosion from Soft Drinks

Larsen

Richards²

2002

Caries Res

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The main aim of the present study was to compare the erosive capabilities of some fruit-flavoured drinks, fresh or saturated with CaF₂, with their content of acids and with previous results from some carbonated soft drinks. The other aim was to measure and compare the rates of dissolution of CaF₂ in some carbonated and non-carbonated drinks and water. Seven commercially available fruit-flavoured drinks were diluted for drinking. Two human molars, each with two approximately 4 × 4 mm windows, were exposed continuously to 500 ml of each drink with or without prior equilibration with CaF₂ under gentle agitation for 48 h. The depths of the erosions were then measured on microradiographs made from sections. Dissolution rate of CaF₂ was measured by suspending 0.5 g of the salt in 0.5 litre of the drinks for 2, 10 and 60 min followed by solution analysis. The pH of the drinks was 2.83–3.51. The amount of NaOH required to bring pH to 5.5 ranged from 12–42 mmol/l, which is more than the amount necessary for most carbonated soft drinks. Equilibration with CaF₂ gave total fluoride concentrations of 3–8 ppm. The depths of the lesions induced by the drinks without added fluoride were 450–625 µm whilst those developed by the drinks equilibrated with CaF₂ were 350–625 µm. The dissolution of CaF₂ was faster in the carbonated drinks and in distilled water than in the non-carbonated drinks. In conclusion, non-carbonated fruit-flavoured drinks contain considerable amounts of acids which, in vitro, induce erosions in teeth similar to those induced by carbonated soft drinks. Saturation with CaF₂ reduced the in vitro development of erosions by 28% induced by drinks with pH above 3; in drinks with pH below 3, erosions were not affected by pH, despite total fluoride concentrations of up to 20 ppm.

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“…CaF 2 interferes with de-and remineralization processes during acid attacks by elevating fluoride levels through slow dissolution (1)(2)(3). The amount of CaF 2 formed is known to depend on several factors, such as fluoride concentration, the time of exposure, the pH of the solution, phosphate and salivary calcium concentration (4)(5)(6)(7)(8)(9). The availability of calcium ions is an important factor for calcium fluoride formation (7).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Salivary Calcium and Fluoride Toothpaste on the Formation of KOH-Soluble Fluoride: In Vitro Study

Bašić

Peroš

Šutej

et al. 2015

Acta Stomatol Croat

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On the Properties of Fluoride Solutions Used for Topical Treatment and Mouth Rinse

Cited by 14 publications

References 14 publications

Prevention by Means of Fluoride of Enamel Erosion as Caused by Soft Drinks and Orange Juice

Prevention by Means of Fluoride of Enamel Erosion as Caused by Soft Drinks and Orange Juice

Fluoride Is Unable to Reduce Dental Erosion from Soft Drinks

The Effect of Salivary Calcium and Fluoride Toothpaste on the Formation of KOH-Soluble Fluoride: In Vitro Study

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