Fluoride uptake in dental enamel after using fluoridated dentifrice, preceded or not by a CaCl(2) solution rinse.
| Autor: | Ubeda LT; Bauru Dental School, USP., Cardoso VE, Buzalaf MA |
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| Jazyk: | angličtina |
| Zdroj: | Journal of applied oral science : revista FOB [J Appl Oral Sci] 2005 Dec; Vol. 13 (4), pp. 418-23. |
| DOI: | 10.1590/s1678-77572005000400019 |
| Abstrakt: | Introduction: The use of a calcium solution previously to brushing could favor the remineralization and the fluoride (F) uptake in dental enamel. Objective: This study evaluated the F in dental enamel after using a F dentifrice, preceded or not by a rinse with a CaCl(2) solution. Methods: Ten subjects (18-30 years) participated in a double-blind, cross-over protocol. Enamel biopsy and 3 min saliva samples were obtained at baseline and after brushing (1.5 g Crest®, 1,000 ppm F as NaF), preceded by a rinse with 10 mL of 20 mM CaCl(2) 50 mM acetate pH 7.2 or deionized water, for 1 min, followed by a 15 mL water rinse for 5 sec. Biopsies were made before the rinses and after 8-15 and 120 min. Saliva samples were collected before the rinses and after 4, 15, 30, 60 and 120 min. F concentration in enamel biopsies was analyzed with the F electrode (Orion 9409) and a miniature calomel reference electrode, while phosphorus concentration was analyzed by spectrophotometry. Saliva samples were analyzed for F with the electrode (Orion 9609) by the direct method. The data were analyzed by ANOVA and Tukey test (p<0.05). Results: Mean F concentration ± SD (µg/mL) at baseline up to 120 min for saliva samples were: 0.02±0.01; 9.06±4.26; 2.01±1.76; 0.47±0.33; 0.24±0.17; 0.08±0.08; 0.07±0.04 for the deionized water rinse, and 0.02±0.02; 10.96±14.21; 2.76±3.04; 0.87±1.29; 0.40±0.66; 0.16±0.23; 0.09±0.09 for the CaCl(2) rinse. The data for enamel biopsies were (µg/g): 1861.7±1011.0; 1790.5±953.2; 1117.6±585.2 for the deionized water rinse, and 1586.4±776.8; 1536.3±546.4; 1520.5±1340.7 for the CaCl2 rinse. Conclusion: According to this protocol, there was not a significant variation in enamel F uptake after using a F dentifrice preceded or not by a rinse with a CaCl(2) solution. |
| Databáze: | MEDLINE |
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