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Results for “Acidulated Phosphate Fluoride”

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At least 19 recordsLinked to original sources
PubMed1976

Clinical study of an amine fluoride gel and acidulated phosphate fluoride gel.

This study compared caries inhibition in children by an amine fluoride and an acidulated phosphate fluoride when administered in a topically applied gel. In addition, the effects of applying amine fluoride daily and weekly were compared. Four hundred and sixty-eight children, ages 6 to 13, were randomly assigned to one of five treatment groups and received a total of five, 5-minute treatments. The treatment and interval between each of the five treatments were as follows:(A)acidulated phosphate fluoride daily, (B) amine fluoride daily, (C) amine fluoride weekly, (D) placebo daily, and (E) placebo weekly. When the children were examined for total Decayed, Missing, and Filled Surfaces (DMFS) increments 2 years later, no significant differences were observed. However, when the data were examined for effects of DMFS for specific tooth surface, significant restriction (61%) of occlusal increment was shown in the group which was treated with amine fluoride daily for 5 consecutive days as compared with the control group.

Adolescent↗
PubMed1979

The antimicrobial effect of fluorides (acidulated phosphate, sodium and stannous) on Actinomyces viscosus.

The effect of three commercially prepared fluoride compounds (acidulated phosphate fluoride 1.23% F-, stannous fluoride 0.4%, and sodium fluoride 0.05%) diluted to various concentrations with brain heart infusion broth, on the growth of five strains of Actinomyces viscosus following 1 and 24 hours' exposure to the fluorides was studied. Results demonstrated that SnF2 was the most effective growth inhibitor of the organisms at 500 ppm F- after 1 hour and at 100 ppm F- after 24 hours' exposure. APF and NaF were not effective within a 1 hour exposure period, but did suppress growth of the organisms at 200 ppm in the cultures exposed for 24 hours.

Acidulated Phosphate Fluoride↗
PubMed1976

Effect of topically applied acidulated phosphate fluoride on dental caries.

A 4-year clinical trial was conducted to determine the effect on dental caries incidence of the use of acidulated phosphate fluoride (APF 1.23%). 1,653 Egyptian schoolchildren aged 8 years started the trial. Dental caries was assessed annually by clinical examinations. 1,027 children completed the study. After 4 years, the children in the study group showed a mean of 2.58 DMF teeth and 2.68 DMF surfaces. Those in the control group showed 2.58 and 2.67, respectively. No significant reduction in the caries increment was observed at 0.05 level. The findings of this study suggest that topical application of fluoride does not decrease pit and fissure caries.

Acidulated Phosphate Fluoride↗
PubMed1992

[The mechanism of topical applied ion supplemented acidulated phosphate fluoride gel effects on dental enamel demineralization: an in vitro study].

The present study was carried out on dental enamel to describe surface changes in the scanning electron microscope and crystallites changes in the high-resolution transmitted electron microscope as related to treatments of topical applied ion supplemented acidulated phosphate fluoride (APFI) gel and artificial caries agent demineralization in vitro, which imitated in vivo with pH- cycling condition. Our data suggest that topical application of APFI gel produce some CaF2 spheres on the surface of enamel and some fluoride-containing apatites in dental enamel. The latter are considered as result of F- and CaHPO4 or hydroxyapatites. The essence of chemical reactions are discussed. The results confirm that enamel treated with APFI gel becomes more resistant to artificial caries agent and electron radiation damage.

Acidulated Phosphate Fluoride↗
PubMed1976

In vitro treatment of human root surfaces with fluorides.

Two-minute topical applications with four different fluoride compounds, acidulated phosphate fluoride, sodium fluoride, sodium monofluorophosphate and stannous fluoride, were evaluated for ability to reduce the acide solubility of human root surfaces in vitro. Each fluoride was in aqueous solution with the fluoride level adjusted to 1.23 percent and the pH native. Rectangular windows were prepared on root surfaces and control versus test differences were invariably studied within teeth and not between teeth. Sodium fluoride and sodium monofluorophosphate solutions reduced root surface solubility by approximately 30 percent while acidulated phosphate fluoride and stannous fluoride were more than 2.5 times more effective, the solubility reduction exceeding 80 percent. Root surfaces thus are similar to enamel in their reactions to topically applied fluorides. Based upon these results the clinician should choose between acidulated phosphate fluoride and stannous fluoride when making the choice of a single treatment compound for office application.

Dental Cementum↗
PubMed1978

Enamel solubility reduction by acidulated phosphate-fluoride (APF) treatment.

The enamel solubility reducing (ESR) potential of acidulated phosphate-fluoride (APF) solutions containing varying amounts of F was studied. Commercial APF (1.23% F, pH 3.0) reduced solubility by about 80%. Fivefold dilutions of this APF were made with either phosphoric acid or water without significant effect on ESR potential. Further dilution to 0.12% F significantly decreased effectiveness. Commercially available APF products (1.23%) can be diluted several-fold with distilled water in the dental office without significant loss of ability to reduce the solubility of enamel.

Acidulated Phosphate Fluoride↗
PubMed1976

Laboratory effectiveness of different types of fluoride compounds.

The enamel solubility reducing characteristics of four fluorides -- sodium fluoride (NaF), acidulated phosphate fluoride (APF), stannous fluoride (SnF2), and sodium monofluorophosphate (Na2PO3F), each prepared to contain 1.23 per cent F are evaluated. Initial solubility reduction by SnF2, 81.7 per cent was significantly (P less than .01) higher than that of 76.9 per cent provided by APF, however, after repeated exposure to acid etches the protection by APF became significantly (P less than .01) higher than that derived from SnF2. The durability of protection provided by SnF2 after overnight washing, was significantly (P less than .01) higher than that of APF. Results for NaF and MFP were significantly (P less than .01) lower than those of either APF or SnF2 at any point in the experiment.

Apatites↗
PubMed1977

Effect of acidulated phosphate-fluoride chewable tablets in schoolchildren: results after 55 months.

Two groups of children initially in the first and second grades chewed, rinsed with, and swallowed an acidulated phosphate-fluoride tablet containing 1 mg of fluoride either once or twice a day in school. A control group of children followed the procedure once a day using a placebo tablet. An interim evaluation after 55 months showed that the children receiving two fluoride tablets daily had a significant reduction in incremental caries on early erupting teeth, which received primarily topical exposure to the fluoride, as well as on late erupting teeth, which received mainly preeruptive, systemic exposure. The findings also suggested that the use of a single fluoride table daily may reduce dental caries, although the presence of a benefit was less definitive than it was for the two-tablet procedure.

Acids↗
PubMedDate not supplied

Effects of topical fluorides and citric acid on overglazed and autoglazed porcelain surfaces.

The effect of 1.23% acidulated phosphate fluoride, 0.40% stannous fluoride gels, and 2.00% citric acid solution on 150.00 overglazed and 150 autoglazed porcelain surfaces was measured using a profilometer. Application of 1.23% acidulated phosphate fluoride for periods of 16 and 32 minutes caused etching in both groups, but the autoglazed group was significantly more effected. In both groups increase in application time did not affect the amount of etching. No etching was detected in either group after the application of 0.40% stannous fluoride for 6 and 12 hours and 2.00% citric acid for 4 and 8 hours.

Acid Etching, Dental↗
PubMed1976

Preventing enamel decalcification during orthodontic treatment.

One hundred thirty-two extracted premolar teeth were selected and divided into four equal groups. The first group of thirty-three teeth received a topical application of acidulated phosphate fluoride; the second group, a topical application of stannous fluoride; the third group, an application of a polymeric adhesive coating; the fourth group was left untreated to serve as a control. On each tooth a loosely fitted orthodontic band was cemented to place. After cementation, the band was broken to simulate a loose orthodontic band in vivo. The four groups of teeth were simultaneously immersed in a decalcifying gelatin and were left undisturbed for 11 weeks. The teeth were then removed and a record was made of the decalcification produced. A chi-square test was used to compare the teeth in each group to those in every other group. Compared to a control group of teeth, those teeth treated with polymeric adhesive coating, acidulated phosphate fluoride, or stannous fluoride produced a statistically significant reduction in decalcification of the tooth surfaces beneath loose orthodontic bands. For a one-application technique, the polymeric adhesive coating provided more protection against decalcification of teeth under loose orthondontic bands than did either acidulated phosphate fluoride or stannous flouride.

Calcium Metabolism Disorders↗
PubMed1975

The bonding of a polymeric fissure sealant to topical fluoride-treated teeth.

The tensile bond strength of a polymeric fissure sealant to enamel treated with a variety of topical fluorides was determined. Application of acidulated phosphate fluoride solutions (APF) prior to and after acid etching reduces the tensile bond strength of Nuva Seal from 36-6+/-9-0 kg/cm2 to 4-9+/-3-3 kg/cm2 and 23-8+/-6-3 kg/cm2 respectively. The treatment of the etched enamel with freshly prepared 8% stannous fluoride solution prior to Nuva Seal application significantly increases the tensile bond strength to 55-7+/-17-1 kg/cm2. It is recommended that clinical procedures such as the application of fissure sealants, acid etch composite restorations and the direct attachment of orthodontic brackets, all of which involve etching of the enamel, should not be precedded by the topical application of APF solutions.

Dental Bonding↗